The FMT research group is active article writer and producer with over 100 articles published internationally. Below you can find them listed according to the year they were published.
Interested academically in the topics of our publications? We are always looking for new research parters.
In addition to the articles, the group has produced a PhD dissertation and several guides regarding the research topic activities, such as laser welding and ultra-high-strength steels in mechnical design. However, three of the guides have been published only in Finnish.
PhD Dissertations:
Antti Järvenpää (2019) Microstructures, Mechanical Stability and Strength of Low-temperature Reversion-Treated AISI 301LN Stainless Steel Under Monotonic and Dynamic Loading
Guides:
Kustannustehokkaat Cad Fem ja Cam -ohjelmat
Ultralujat teräkset mekaniikkasuunnittelussa
Articles:
2020
A. Khosravifard, A. Hamada, A. Järvenpää, L. P. Karjalainen (2020) Enhancement of grain structure and mechanical properties of a
high-Mn twinning-induced plasticity steel bearing Al-Si by Fast-Heating Annealing
W. Abdel-Aziem, A. Hamada, T. Makino, M. Hassan (2020) Microstructural evolution during extrusion of equal channel angular-pressed
AA1070 alloy in micro/meso-scale , Materials Science and Technology, https://doi.org/10.1080/02670836.2020.1759485
T. Rautio, J. Jalava-Kanervio, J. Kumpula, J. Mäkikangas, A. Järvenpää (2020) Microstructure and Mechanical Properties of Laser Butt
Welded Laser Powder Bed Fusion Manufactured 316L Parts
T. Rautio, A. Hamada, J. Jalava-Kanervio, J. Kumpula, J. Mäkikangas (2020) Effect of silver coating on the electrical conductivity
and corrosion behaviour of 3D-printed AlSi10Mg
A. Järvenpää, M. Jaskari, A. Kisko, L.P. Karjalainen (2020) Processing and Properties of Reversion-Treated Austenitic Stainless
Steels, Metals 10, 281, doi:10.3390/met10020281
T. Rautio (2020) Overall Equipment Efficiency Measurement Based on Raspberry Pi
M. Hietala, A. Hamada, M. Keskitalo, A. Järvenpää (2020) Microstructural Evolution of Laser-welded Dissimilar Lap Joints of Martensitic
Abrasion Resistant Steel and Cold-worked Austenitic Stainless Steel
A. Järvenpää, A. Hamada, M. Jaskari, P. Karjalainen (2020) Effect of grain size and austenite stability on formability of AISI 301LN
A. Mustakangas, A. Khosravifard , K, Mäntyjärvi, A. Hamada (2020) Effect of Infill pattern on the compressive strength of
Polylactic acid (PLA)
A. Hamada, A. Järvenpää, J. Paavola, J. Kömi (2020) Strain rate sensitivity of hot deformed austenitic high-manganese twinning-induced
plasticity steel
M. Keskitalo, A. Hamada, M. Hietala, M. Jaskari, A. Järvenpää (2020) Microstructure and formability of laser welded dissimilar
butt joint of austenitic-ferritic stainless steels
M.Hietala, A. Hamada, M. Keskitalo, A. Järvenpää (2020) A Comparative Study on the Mechanical Properties of Abrasion Resistant
Martensitic Steel and Ultra-High-Strength Stainless Steel Lap Joints by Laser Welding
J. Mäkikangas, T. Rautio, J. Jalava-Kanervio, A. Mustakangas, A. Järvenpää (2020) Laser Welding of SLM-Manufactured 316L Stainless
Steel Lap Joint
A.Mustakangas, A.Hamada, A.Järvenpää (2020) Enhancement of the compressive strength of 3D-printed polylactic acid (PLA) by controlling
internal pattern
M. Somani, M. Jaskari, S. Sadeghpour, P. Karjalainen (2020) Improving the yield strength of an antibacterial 304Cu austenitic
stainless steel by the reversion treatment
M. Farahani, A. Zarei-Hanzaki, H. Abedi, J. Kim, M. Jaskari, P. Sahu, L. P. Karjalainen (2020) On the activation of alternated
stacking fault pair twinning mechanism in a very large-grained Fe-29Mn-2.4Al steel, Scripta Materialia 178, pp 301-306
2019
M.H.A. Gadelhaq, A. Hamada , M. Ghayad, A. Järvenpää, M. Jaskari, M. Hossam (2019) Effect of grain structure on the mechanical
and corrosion behavior of advanced high Mn TWIP stainless steel
T. Rautio, J. Mäkikangas, M. Jaskari, M. Keskitalo, A. Järvenpää (2019) Microstructure and Mechanical Properties of Laser Welded
316L SLM Parts
S. R. Babu, T. Davis, T.Haas, A. Järvenpää, David Porter (2019) Image processing as a tool to quantify auto-tempering in as as
quenched martensitic steel
T. Rautio, A. Hamada, J. Mäkikangas, M. Jaskari, A. Järvenpää (2019) Laser Welding of Selective Laser Melted Ti6Al4V: Microstructure
and Mechanical Properties, Materials Today: Proceedings, DOI:https://doi.org/10.1016/j.matpr.2019.12.322
A. Järvenpää, M. Jaskari, M. Keskitalo, K. Mäntyjärvi, L.P. Karjalainen (2019) Microstructure and mechanical properties of
laser-welded high-strength AISI 301LN steel in reversion-treated and temper-rolled conditions, Procedia Manufacturing, 36, pp 216–223
A. Järvenpää, L.P. Karjalainen An overview of mechanical properties of today’s grain-refined austenitic stainless steels,
presented at ESSC2019 conference (November 2018)
M. Jaskari, A. Järvenpää, J. Mäkikangas, K. Mäntyjärvi, P. Karjalainen (2019) Effect of High Porosity on Bending Fatigue Properties
of 3D Printed AISI 316L Steel, Procedia Manufacturing, 36 (2019) 33-41
Q. Portella, M. Chemkhi, A. Järvenpää, P. Karjalainen, D. Retraint Fatigue Properties of Selective Laser Melted 316L Steel Parts
after Surface Mechanical Attrition Treatment, presented at INCASE2019 conference (January 2019)
K. Remes, A. Järvenpää, T. Fabritius (2019) Contactless online characterization of large-area conductive thin films by thermography
and induction, Optics Letters 44, pp 2574-2577 doi:https://doi.org/10.1364/OL.44.002574
S. R. Babu, M. Jaskari, A. Järvenpää, D. Porter (2019) The effect of hot mounting on the microstructure of an as-quenched
auto-tempered low-carbon martensitic steel, Metals 9, pp 550
M. Hietala, M. Keskitalo, A. Järvenpää, K. Mäntyjärvi (2019) Mechanical testing of friction drilled and form tapped bolt joints
for abrasion resistant steel applications, AIP Conference Proceedings 2113, 050025. DOI: 10.1063/1.5112589
J. Mäkikangas, T. Rautio, A. Mustakangas, K. Mäntyjärvi (2019) Laser welding of AlSi10Mg aluminium-based alloy produced by Selective
Laser Melting (SLM), Procedia Manufacturing Vol. 36, pp 88-94. DOI:10.1016/j.promfg.2019.08.013
T. Rautio, J. Mäkikangas, A. Mustakangas, K. Mäntyjärvi (2019) Disk Laser Assisted Surface Heat Treatments Of AlSi10Mg Parts
Produced By Selective Laser Melting (SLM), Procedia Manufacturing, Vol. 36, pp 95-100. DOI: 10.1016/j.promfg.2019.08.014
M. Keskitalo, M.Hietala, K. Mäntyjärvi (2019) The Normal and shear strength properties of laser lap weld,
Procedia Manufacturing, Volume 36, pp 224-231
M. Hietala, A. Järvenpää, M. Keskitalo, M. Jaskari, K. Mäntyjärvi (2019) Tensile and fatigue properties of laser-welded
ultra-high-strength stainless spring steel lap joints, Procedia Manufacturing Volume 36, pp 131-137
M. Keskitalo, M. Hietala, K. Mäntyjärvi(2019) The geometrical fine adjustment of circular honeycomb structure using laser welding,
AIP Conference Proceedings 2113, 070001. https://doi.org/10.1063/1.5112606
T. Iso-junno, T. Jokelainen, M. Jaskari, M. Keskitalo, K. Mäntyjärvi, A. Järvenpää (2019) The Effect of Processing Parameters on
Formability of 3D Printed AISI 316L, AIP Conference Proceedings 2113, 150010. https://doi.org/10.1063/1.5112686
K. Mäntyjärvi, T. Iso-Junno, A. Mustakangas, T. Jokelainen, M. Keskitalo, A. Järvenpää (2019) Exploitation of Forming of the 3D
Printed Materials, AIP Conference Proceedings 2113, 150007. https://doi.org/10.1063/1.5112683
A. Mustakangas, T. Iso-Junno, T. Jokelainen, M. Keskitalo, K. Mäntyjärvi(2019) Forming and formability of 3D printed thermoplastics,
AIP Conference Proceedings 2113 (2019), 150012. https://doi.org/10.1063/1.5112688
T. Jokelainen, T. Iso-Junno, A. Mustakangas, M. Keskitalo, K. Mäntyjärvi (2019) Formability of selective laser melted AlSi10Mg,
AIP Conference Proceedings 2113, 150011. https://doi.org/10.1063/1.5112687
S. Uusikallio, M. Jaskari, A. Kisko, T. Nyo, D. Porter, J. Kömi (2019) Sample Preparation Challenges with Highly Metastable
Ferritic-Austenitic Stainless Steels, Practical Metallography 56, pp 373-392
F. Haftlang, A. Zarei-Hanzaki, H. Abedi, M. Jaskari, P. Karjalainen (2019) The effect of nano-size second phases on the
tribological performance of TNTZ alloy, Materials Research Express 6(9)
S. R. Babu, T. Nyyssönen, M. Jaskari, S. Pallaspuro, A. Järvenpää, D. Porter (2019) Observations on the relationship between
crystal orientation and the level of auto-tempering in an as-quenched martensitic steel, Metals 9, pp 1255
S. Vakili, A. Zarei-Hanzaki, A. Anooshe, H. R. Abedi, M. Mohammadebrahimi, Matias Jaskari, S. Sohn, D. Ponge, P. Karjalainen (2019)
Reversible dislocation movement, martensitic transformation and nano-twinning during elastic cyclic loading of a metastable
high entropy alloy, Acta Materialia 185, pp 474-492
M. Hietala, A. Hamada, M. Keskitalo, M. Jaskari, A. Järvenpää (2019) Mechanical characterization of laser-welded double-lap joints in
ultra-high and low strength steels for sandwich panel applications, Materials today:proceedings, https://doi.org/10.1016/j.matpr.2019.10.031
A. Järvenpää (2019) Microstructures, mechanical stability and strength of low-temperature reversion-treated AISI 301LN
stainless steel under monotonic and dynamic loading, Acta Univ. Oul. C 695, 85 pp.
P. Nyanor, O. El-Kady, H. M. Yehia, A. Hamada, K. Nakamura, M. A. Hassan (2019) Effect of Carbon Nanotube (CNT) Content on the Hardness,
Wear Resistance and Thermal Expansion of In-Situ Reduced Graphene Oxide (rGO)-Reinforced Aluminum Matrix Composites, Metals and
Materials International, in press, https://doi.org/10.1007/s12540-019-00445-6
W. Abdel-Aziem, A. Hamada, T. Makino, M. A. Hassan (2019) Microstructure Evolution of AA1070 Aluminum Alloy Processed by
Micro/Meso-Scale Equal Channel Angular Pressing, Metals and Materials International, in press. https://doi.org/10.1007/s12540-019-00544-4
2018
T. Jokelainen, A. Järvenpää, K. Saine, K. Mäntyjärvi (2018) Iterative weight reduction process,
Journal of Ship Production and Design 34, 329-334(6)
A. Järvenpää, M. Jaskari, L.P. Karjalainen (2018) Reversed Microstructures and Tensile Properties after Various Cold Rolling
Reductions in AISI 301LN Steel, METALS 8, pp 109, doi:10.3390/met8020109
J. Man, A. Järvenpää, M. Jaskari, I. Kubena, S. Fintova, A. Chlupova, L. P. Karjalainen, J. Polak (2018) Cyclic deformation
behaviour and stability of grain-refined 301LN austenitic stainless structure, MATEC Web of Conferences 165:06005,
DOI: 10.1051/matecconf/201816506005
M. Jaskari, A. Järvenpää, L.P. Karjalainen (2018) The Effect of Heating Rate on Texture and Formability of Ti-Nb Stabilized
Ferritic Stainless Steel, Key Engineering Materials 786, pp 3-9.
A. Järvenpää, M. Jaskari, L.P. Karjalainen (2018) Cyclic Behavior of Reversion-treated Structures after Different Cold Rolling
Reductions in an AISI 301LN Stainless Steel, Key Engineering Materials 786, pp 52-56.
A. Järvenpää, M. Jaskari, L.P. Karjalainen (2018) Properties of Induction Reversion-Refined Microstructures of AISI 301LN under
Monotonic, Cyclic and Rolling Deformation, Materials Science Forum 941, pp 601-607.
M. Jaskari, A. Järvenpää, L.P. Karjalainen (2018) The Effect of Heating Rate and Temperature on Microstructure and R-value of
Type 430 Ferritic Stainless Steel, Materials Science Forum 941, pp 364-369.
D. Ahmadkhaniha, Y. Huang, M. Jaskari, A. Järvenpää, M. Heydarzadeh Sohi, C. Zanella, L. P. Karjalainen, T. Langdon (2018) Effect of
high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg, J. Mater. Sci. 56, pp 16585-16597
T. Jokelainen, A. Järvenpää, M. Keskitalo, M. Hietala, A. Mustakangas, K. Mäntyjärvi (2018) Buckling tests for laser-welded
single corrugated core, Key Engineering Materials 786, pp 269-275.
M. Hietala, A. Järvenpää, M. Keskitalo, K. Mäntyjärvi (2018) Bending Strength of Laser-welded Sandwich Steel Panels of
Ultra-high Strength Steel, Key Engineering Materials 786, pp 286-292.
M. Kananen, A. Järvenpää, M. Jaskari, K. Mäntyjärvi (2018) Mechanical Properties of a “Simple Panel Structure” Manufactured
of an Ultra High Strength Stainless Steel, Key Engineering Materials 786, pp 319-324.
K. Kutuniva, J. Mäkikangas, A. Mustakangas, T. Rautio, J. Kumpula, K. Mäntyjärvi (2018) DFAM based multi-material 3D printing
using conductive and flexible filaments, Key Engineering Materials 786, pp 364-370.
M. Keskitalo, A. Mustakangas, M. Hietala, K. Mäntyjärvi (2018) The influence of shielding gas on strength of the laser welded
thin sheet lap welds, Key Engineering Materials 786, pp 98-103. https://doi.org/10.4028/www.scientific.net/KEM.786.98
T. Iso-Junno, H. Niemi, J. Mäkikangas, K. Mäntyjärvi (2018) Design Process of Durable and Lightweight Rally Car Frame from
Ultra-High Strength Stainless Steel, Key Engineering Materials 786, pp 325-332.
T. Iso-Junno, Kimmo K. Mäkelä, K. Mäntyjärvi, and T. Jokelainen (2018) A Short Glance on Metal 3D AM,
Key Engineering Materials 786, pp 348-355. DOI:10.4028/www.scientific.net/ KEM.786.348
T. Rautio, K. Kutuniva, J. Mäkikangas, K. Mäntyjärvi (2018) Simple and Cost Effective System for Overall Equipment Efficiency
Measurement, Proceedings of the 2018 IEEE International Conference on Industrial Engineering & Engineering Management.
DOI: 10.1109/IEEM.2018.8607455
T. Jokelainen, K. Mäkelä, A. Mustakangas, J. Mäkelä, K. Mäntyjärvi (2018) In Implementing a Metal 3D AM Machine,
Key Engineering Materials 786, pp 356-363. DOI: 10.4028/www.scientific.net/KEM
2017
A. Järvenpää, M. Jaskari, T. Juuti, L.P. Karjalainen (2017) Demonstrating the effect of precipitation on mechanical stability
of austenite in a reversion-treated 301LN stainless steel, Metals 7, pp 1-13.
A. Järvenpää, M. Jaskari, J. Man, L.P. Karjalainen (2017) Stability of grain-refined reversed structures in a 301LN austenitic
stainless steel under cyclic loading, Mater. Sci. Eng. A 703, pp 280–292.
J. Man, A. Chlupová, I. Kubena, T. Kruml, O. Man, A. Järvenpää, L.P. Karjalainen, J. Polák (2017) LCF behaviour of 301LN steel:
coarse-grained vs. UFG-bimodal structure, Proceedings of the LCF8 The Eighth International Conference on Low Cycle Fatigue,
Dresden, Germany, 27–29 June 2017.
A. Järvenpää, M. Jaskari, J. Man, L.P. Karjalainen (2017) Austenite stability in reversion-treated structures of a 301LN
steel under tensile loading, Mater. Charact., 127, pp 12–26. http://dx.doi.org/10.1016/j.matchar.2017.01.040
D. Ahmadkhani, Y. Huang, M. Jaskari, A. Järvenpää, M.H. Sohi, C. Zanella, L.P. Karjalainen, T.G. Langdon (2017) Effect of
high-pressure torsion on microstructure, mechanical properties and corrosion resistance of cast pure Mg, UFGNSM 2017 conference
M. Keskitalo, M. Hietala, K. Mäntyjärvi (2017) The influence of shielding gas configurations on formability of the ferritic
stainless steel laser weld, Physics Procedia Volume 89, 2017, pp 80-88.
2016
J. Man, I. Kubena, M. Smaga, O. Man, A. Järvenpää, A. Weidner, Z. Chlup, J. Polak (2016) Microstructural changes during deformation
of AISI 300 grade austenitic stainless steels: Impact of chemical heterogeneity , Structural Integrity Procedia 2, pp 2299-2306.
http://dx.doi.org/10.1016/j.prostr.2016.06.288
M. Hietala, M. Keskitalo, A. Järvenpää, K. Saine, L. P. Karjalainen, K. Mäntyjärvi (2016) Mechanical behaviour of laser welded
corrugated panels of ultrahigh strength steel, NT2F16-conference.
A. Järvenpää, M. Jaskari, L. P. Karjalainen (2016) Grain size and austenite stability in fatigue of a reversion-treated 301LN
type stainless steel, Extended abstract, NT2F16-conference.
D. Ahmadkhaniha, A. Järvenpää, M. Jaskari, M. Heydarzadeh Sohi, A. Zarei-Hanzaki, M. Fedel, F. Deflorian, L.P. Karjalainen (2016)
Microstructural modification of pure Mg for improving mechanical and biocorrosion properties, Journal of the mechanical behavior
of biomedical materials.
A. Hamada, A. Järvenpää, E. Ahmed, P. Sahu, A.I.Z. Farahat (2016) Enhancement in grain-structure and mechanical properties of laser
reversion treated metastable austenitic stainless steel, Materials and Design, Vol 94, pp 345–352.
P. Behjati, A. Kermanpur, L.P. Karjalainen, A. Järvenpää, M. Jaskari, H. Samaei Baghbadorani, A. Najafizadeh, A. Hamada (2016)
Influence of prior cold rolling reduction on microstructure and mechanical properties of a reversion annealed high-Mn austenitic steel,
Materials Science & Engineering A, Vol. 650, pp 119-128.
2015
M. Kananen, K. Mäntyjärvi, M. Keskitalo, M. Hietala, A. Järvenpää, K. Holappa, K. Saine, J. Teiskonen (2015) Laser Welded
Corrugated Steel Panels in Industrial Applications, Physics Procedia, Vol. 78, pp 202-209.
M. Keskitalo, J. Sundqvist, K. Mäntyjärvi, J. Powell, A.F.H. Kaplan (2015) The Influence of Shielding Gas and Heat Input on
the Mechanical Properties of Laser Welds in Ferritic Stainless Steel, Physics Procedia, Vol. 78, 2015, P. 222-229.
A. Järvenpää, M. Jaskari, M. Hietala, K. Mäntyjärvi (2015) Local laser heat treatments of steel sheets,
Physics Procedia, Vol. 78, 2015, P. 296-304.
A. Järvenpää, M. Jaskari, M. Hietala, K. Mäntyjärvi (2015) Local reversion of cold formed AISI 301LN,
Physics Procedia Vol. 78, 2015, P. 305-311.
A. Hamada, A. Järvenpää, M.M.Z. Ahmed, M. Jaskari, B.P. Wynne, D. Porter, L.P. Karjalainen (2015) The microstructural evolution
of friction stir welded AA6082-T6 aluminum alloy during cyclic deformation, Materials Science & Engineering A642, pp 366–376.
M. Keskitalo, K. Mäntyjärvi, J. Sundqvist, J. Powell, A.F.H. Kaplan (2015) Laser welding of duplex stainless steel with nitrogen
as shielding gas, Journal of materials processing technology pp. 381-384.
J. Sundqvist, A.F.H. Kaplan, J. Granström, K.F. Sundin, M. Keskitalo, K. Mäntyjärvi, X. Ren (2015) Identifying residual
stresses in laser welds by fatigue crack growth acceleration measurement, Journal of Laser Applications 27, 042002.
https://doi.org/10.2351/1.4923472
2014
V. Kesti, A. Kaijalainen, A. Väisänen, A. Järvenpää, A. Määttä, A-M. Arola, K. Mäntyjärvi, R. Ruoppa (2014) Bendability and
Microstructure of Direct Quenched Optim® 960QC, Material Science Forum Vols. 783-786, pp 818-824.
A. Järvenpää, M. Jaskari, L. P. Karjalainen (2014) Effect of prior austenite grain structure on cyclic stability and crack
formation in a direct-quenched ultra-high strength steel, Procedia Engineering Vol. 74.
A. Hamada, A. Järvenpää, M. Honkanen, M. Jaskari, D. Porter, L.P. Karjalainen (2014) Effects of cyclic pre-straining on mechanical
properties of an austenitic microalloyed high-Mn twinning-induced plasticity steel, Procedia Engineering Vol. 74, pp 47–52.
A. Järvenpää, J. Lämsä, M. Hietala, K. Mäntyjärvi (2014) Mechanical properties of a sandwich panel manufactured using
longitudinally laminated forming tools, Key Engineering Materials 611-612, pp 781-785.
J. Lämsä, A. Järvenpää, K. Mäntyjärvi (2014) Designing and manufacturing of a flexible longitudinally laminated sandwich panel
forming tool, Key Engineering Materials Vols 611-612.
A. Järvenpää, J. Lämsä, E. Patard, K. Mäntyjärvi (2014) A Novel Heat Treatment Line for Processing of Tailored Small Batch Steels,
Key Eng. Mat. (2014) 611-612, 804-810.
2013
J. Sundqvist, I. Eriksson, A.F.H. Kaplan, M. Keskitalo, K. Mäntyjärvi, J. Granström, K.G. Sundin (2013) Measuring the influence
of laser welding on fatigue crack propagation in high strength steel, ICALEO 2013 - 32nd International Congress on Applications
of Lasers and Electro-Optics. Stefan Kaierle.m The Laser Institute of America, pp 647-654.
M. Keskitalo, K. Mäntyjärvi (2013) The influence of the shielding gas to the static and dynamic strength properties of laser
welded work-hardened nitrogen alloyed austenitic stainless steel, Key Engineering Materials Vol. 549, pp 471-476.
A. Järvenpää, L. P. Karjalainen, M. Jaskari (2013) Effect of Grain Size on Fatigue Behaviour of Type 301ln Stainless Steel,
International Journal of Fatigue, Vol. 65, pp 93–98.
K. Illikainen, K. Holappa, K. Mäntyjärvi (2013) Quality Assurance of Laser Welded Axisymmetric Sandwich Structure,
Key Engineering Materials Vol. 549, pp 529-534, Trans Tech Publications.
M. Kananen, M. Hietala, K. Mäntyjärvi (2013) Rapid Manufacturing of Shaped Die and Draw Punch Tools for Presses,
Key Engineering Materials Vols. 554-557, pp 1814-1818, Trans Tech Publications.
J. Lämsä, A. Väisänen, J. Heikkala, A. Järvenpää (2013) Correlation of Tensile Test Parameters and Bendability of High-Strength
Steels, Key Engineering Materials, The Current State-of-the-Art on Material Forming, ISBN-13: 978-3-03785-719-9.
A. Järvenpää, T. Kiuru, A. Määttä, M. Jaskari, K. Mäntyjärvi (2013) Optimization of Local Laser Heat Treatment Process using a
Simple FE-model, Proceedings of the 7th ICPNS conference in Oulu.
A. Järvenpää, M. Jaskari, L. P. Karjalainen, M. Hietala (2013) Enhancing mechanical properties and formability of AISI 301LN
stainless steel sheet by local laser heat treatment, Key Engineering Materials, The Current State-of-the-Art on Material Forming,
ISBN-13: 978-3-03785-719-9.
2012
A. Järvenpää, L.P. Karjalainen, M. Jaskari (2012) Effect of grain size on fatigue behavior of type 301LN stainless steel,
XVI International Colloquium "Mechanical Fatigue of Metals" Conf. Sept. 24-26, 2012, Brno, Czech Republic.
J. Heikkala, A. Väisänen (2012) Usability testing of ultra high-strength steels (2012) The ASME 2012 11th Biennal Conference on
Engineering Systems Design and Analysis (ESDA 2012), July 2-4, 2012 Nantes, France.
J. Kantola, A. Järvenpää, M. Jaskari, K. Mäntyjärvi, J.A. Karjalainen (2012) Influence of plasma, laser and waterjet cutting
on fatigue life of austenitic-ferritic stainless steel, XVI Internationational Colloquium "Mechanical Fatigue of Metals",
September 24 - 26, 2012, Brno, Czech Republic.
J. Kantola, K. Mäntyjärvi, J.A. Karjalainen (2012) Laser Assisted Cutting of Abrasion Resistant Steel, Key Engineering
Materials Vol. 504-505, pp 1371-1376, Trans Tech Publications.
K. Kutuniva, J.A. Karjalainen, K. Mäntyjärvi (2012) Effect of convex sheared punch geometry on cutting force of ultra-high
strength steel, Key Engineering Materials Vol. 504-505, pp 901-906, Trans Tech Publications.
A. Määttä, A. Järvenpää, M. Jaskari, K. Mäntyjärvi, J.A. Karjalainen (2012) Influence of Predetermined Surface Defect to the
Bendability of Ultra-High-Strength Steel, Key Engineering Materials Vol. 504-505, pp 901-906, Trans Tech Publications.
2011
A. Järvenpää, P. Karjalainen, K. Mäntyjärvi (2011) Passive laser assisted bending of ultra-high strength steels, 2nd ICAMPP,
The 2nd 2011 International Conference on Advances in Materials and Manufacturing Processes, Dec. 16-18, 2011, Guilin, China.
M. Rasmus, K. Mäntyjärvi, J.A. Karjalainen (2011) Small Batch Laser Welding using Light Fasteners and Laser Tack Welding,
International Journal of Key Engineering Materials Vol. 473, Trans Tech Publications. ISBN 13 978-3-03785-083-1.
M. Keskitalo, K. Mäntyjärvi, T. Kiuru (2011) The low cycle fatigue strength of laser welded Ultra high strength steel,
International Journal of Key Engineering Materials Vol. 473, Trans Tech Publications. ISBN 13 978-3-03785-083-1.
J. Lämsä, K. Mäntyjärvi, A. Järvenpää, M. Grüner, M. Merklein, J.A. Karjalainen (2011) Methods for determination of residual
stress of a formed plate using laser ablation, International Journal of Key Engineering Materials Vol. 473, Trans Tech Publications.
ISBN 13 978-3-03785-083-1.
J. Kantola, K. Mäntyjärvi, R. Toppila, J.A. Karjalainen (2011) The Effects of Notch Manufacturing Method and Tolerance on
Impact Test Results of UHS Steels, Key Engineering Materials Vol. 473, Trans Tech Publica-tions. ISBN 13 978-3-03785-083-1.
A. Määttä, K. Mäntyjärvi, J.A. Karjalainen (2011) Incremental Bending of Ultra-High-Strength Steels, International Journal of
Key Engineering Materials Vol. 473, Trans Tech Publications, ISBN 13 978-3-03785-083-1.
A. Järvenpää, K. Mäntyjärvi, M. Merklein, A. Määttä, M. Hietala, J.A. Karjalainen (2011) Mechanical Properties of Laser Heat
Treated 6 mm Thick UHSS-Steel, Menary, G. (Edt.): The 14th International ESAFORM Conference on Material Forming, 1353(2011),
AIP Conference Proceedings, pp. 1319-1324.
2009
J. Mäkikangas (2009) Maalipinnoitetun ohutlevyn liittäminen laserhitsauksella, Ohutlevy 2/2009.
K. Mäntyjärvi, J.A. Karjalainen, A. Järvenpää, J. Ojala, M. Keskitalo, J. Mäkikangas (2009) Water Cooling in Sheet Metal Laser
Hardening, Proceedings of the 12th NOLAMP Conference in Laser Processing of Materials, 24th-26th of August 2009, Copenhagen, Denmark.
J. Mäkikangas, K. Mäntyjärvi, J. Ojala (2009) Joining of Colour-Coated Sheet Metals With Yb:Yag Disk Laser,
Proceedings of the 12th NOLAMP Conference in Laser Processing of Materials, 24th-26th of August 2009, Copenhagen, Denmark.
M. Keskitalo, K. Mäntyjärvi (2009) The Static and Dynamic Strength Properties of Laser Welded Work Hardened Stainless Steel,
Proceedings of the 12th NOLAMP Conference in Laser Processing of Materials, 24th-26th of August 2009, Copenha-gen, Denmark.
K. Mäntyjärvi, A. Väisänen, J.A. Karjalainen (2009) Cutting Method Influence On The Fatigue Resistance Of Ultra-High-Strength
Steel, International Journal of Material Forming, Volume 2, Supplement 1/August, 2009, pp 547-550, December 23, Springer Paris.
M. Keskitalo, K. Mäntyjärvi (2009) Yb:YAG Disc Laser Welding of Austenitic Stainless Steel Without Filler Material,
Key Engineering Materials (Volumes 410 - 411), pp 87-96.
A. Väisänen, K. Mäntyjärvi, J.A. Karjalainen (2009) Bendability of Ultra-High-Strength Steel,
Key Engineering Materials (Volumes 410 - 411), pp 611-620.
K. Mäntyjärvi, M. Merklein, J.A. Karjalainen (2009) UHS Steel Formability in Flexible Roll Forming,
Key Engineering Materials (Volumes 410 - 411), pp 661-668.
2008
T. Saarnivuo, T. Tulonen, K. Mäntyjärvi, J. Porter, J.A. Karjalainen (2008) Lasermenetelmä venymäanalyysiverkkojen valmistamiseen,
Ohutlevy 1/08.
K. Mäntyjärvi, J. Tulonen, T. Saarnivuo, J.A. Karjalainen (2008) Properties of Grid Patterns Produced by Laser for Strain Analysis,
Proceedings of the IDDRG 2008 International Conference, June 2008, Olofström, Sweden. ISBN 978-91-633-2944-7.
K. Mäntyjärvi, J. Tulonen, T. Saarnivuo, J. Porter, J.A. Karjalainen (2008) Grid Patterns by Laser for Forming Strain Analysis,
International Journal of Material Forming, Proceedings of the 11th ESAFORM conference on Material Forming, April 2008, Lyon, France, pp 329-332. ISSN 1960-6206.
2007
R. Laitinen, J. Kömi, M. Keskitalo, J. Mäkikangas (2007) Improvement of the strenght of welded joints in ultra-high-strength
OPTIM 960 QC using autogenous Yb:YAG laser welding, Proceedings of the 11th NOLAMP Conference in Laser Processing of Materials,
August 2007, Lap-peenranta, pp 204-215, Finland. ISBN 978-952-214-412-6.
K. Mäntyjärvi, J.A. Karjalainen, A. Leiviskä, M. Keskitalo, J. Mäkikangas , J. Ojala (2007) Laser-Assisted Processes – More Speed
And Less Force For Manufacturing Processes, Proceedings of the 11th NOLAMP Conference in Laser Processing of Materials, August 2007,
Lappeenranta, pp 544-553, Finland. ISBN 978-952-214-412-6 (2007)
M. Keskitalo, K. Mäntyjärvi, J. Mäkikangas, J.A. Karjalainen, A. Leiviskä, J. Heikkala (2007) Local Laser Heat Treatments Of
Ultrahigh Strength Steel, Proceedings of the 11th NOLAMP Conference in Laser Processing of Materials, August 2007, Lappeenranta, Finland.
pp 536-543. ISBN 978-952-214-412-6.
J. Porter, J. Heikkala, K. Mäntyjärvi, J. Karjalainen (2007) Combined Laser Micro-Forming And Machining Of Sheet Metal, Proceedings
of the 11th NOLAMP Conference in Laser Processing of Materials, August 2007, Lappeenranta, Finland, pp 493-501. ISBN 978-952-214-412-6.
J. Mäkikangas, K. Mäntyjärvi, M. Keskitalo, J.A. Karjalainen, J. Niemelä, J. Ojala (2007) Laser Welding Of Coated Sheet Metal
Constructions, Proceedings of the 11th NOLAMP Conference in Laser Pro-cessing of Materials, August 2007, Lappeenranta, Finland, pp 340-348. ISBN 978-952-214-412-6.
K. Mäntyjärvi, J.A. Karjalainen, A. Leiviskä, J. Mäkikangas, M. Keskitalo, J. Niemelä (2007) Local Laser Heat Treatments In Making
Tailored Strength Steel Constructions, Proceedings of the 11th NOLAMP Conference in Laser Processing of Materials, August 2007, Lappeenranta,
Finland, pp 315-322. ISBN 978-952-214-412-6.
K. Mäntyjärvi, A. Leiviskä, J.A. Karjalainen, M. Keskitalo, J. Heikkala, J. Mäkikangas (2007) Local Laser Heat Treatments In Bending
Ultra-High Strength Steel, Proceedings of the 11th NOLAMP Conference in Laser Processing of Materials, August 2007, Lappeenranta, Finland,
pp 291-297. ISBN 978-952-214-412-6.
J.A. Karjalainen, K. Mäntyjärvi, M. Juuso (2007) Punching Force Reduction With Wave-Formed Tools, International Journal of
Key Engineering Materials Vol. 344, Trans Tech Publications. ISBN 0-87849-937-5.
K. Mäntyjärvi, M. Keskitalo, J.A. Karjalainen, A. Leiviskä, J. Heikkala, J. Mäkikangas (2007) Laser-Assisted Bending,
International Journal of Key Engineering Materials Vol. 344, Trans Tech Publications, ISBN 0-87849-937-5.
