TY - JOUR
T1 - On the Utility of Crystal Plasticity Modeling to Uncover the Individual Roles of Microdeformation Mechanisms on the Work Hardening Response of Fe-23Mn-0.5C TWIP Steel in the Presence of Hydrogen
AU - Bal, B.
AU - Koyama, M.
AU - Canadinc, D.
AU - Gerstein, G.
AU - Maier, H. J.
AU - Tsuzaki, K.
N1 - Funding Information:
• Japan Science and Technology Agency (JST) under Indus-try-Academia Collaborative R&D Program “Heterogeneous Structure Control: Towards Innovative Development of Metallic Structural Materials.” (Grant No. 20100113).
Funding Information:
• The Scientific and Technological Research Council of Tur-key (TUB€ İTAK) (Grant No. 112M806).
PY - 2018/7/1
Y1 - 2018/7/1
N2 - This paper presents a combined experimental and theoretical analysis focusing on the individual roles of microdeformation mechanisms that are simultaneously active during the deformation of twinning-induced plasticity (TWIP) steels in the presence of hydrogen. Deformation responses of hydrogen-free and hydrogen-charged TWIP steels were examined with the aid of thorough electron microscopy. Specifically, hydrogen charging promoted twinning over slip-twin interactions and reduced ductility. Based on the experimental findings, a mechanism-based microscale fracture model was proposed, and incorporated into a visco-plastic self-consistent (VPSC) model to account for the stress-strain response in the presence of hydrogen. In addition, slip-twin and slip-grain boundary interactions in TWIP steels were also incorporated into VPSC, in order to capture the deformation response of the material in the presence of hydrogen. The simulation results not only verify the success of the proposed hydrogen embrittlement (HE) mechanism for TWIP steels, but also open a venue for the utility of these superior materials in the presence of hydrogen.
AB - This paper presents a combined experimental and theoretical analysis focusing on the individual roles of microdeformation mechanisms that are simultaneously active during the deformation of twinning-induced plasticity (TWIP) steels in the presence of hydrogen. Deformation responses of hydrogen-free and hydrogen-charged TWIP steels were examined with the aid of thorough electron microscopy. Specifically, hydrogen charging promoted twinning over slip-twin interactions and reduced ductility. Based on the experimental findings, a mechanism-based microscale fracture model was proposed, and incorporated into a visco-plastic self-consistent (VPSC) model to account for the stress-strain response in the presence of hydrogen. In addition, slip-twin and slip-grain boundary interactions in TWIP steels were also incorporated into VPSC, in order to capture the deformation response of the material in the presence of hydrogen. The simulation results not only verify the success of the proposed hydrogen embrittlement (HE) mechanism for TWIP steels, but also open a venue for the utility of these superior materials in the presence of hydrogen.
UR - http://www.scopus.com/inward/record.url?scp=85041903759&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041903759&partnerID=8YFLogxK
U2 - 10.1115/1.4038801
DO - 10.1115/1.4038801
M3 - Article
AN - SCOPUS:85041903759
VL - 140
JO - Journal of Engineering Materials and Technology, Transactions of the ASME
JF - Journal of Engineering Materials and Technology, Transactions of the ASME
SN - 0094-4289
IS - 3
M1 - 031002
ER -