Interstitial-Free Bake Hardening Realized by Epsilon Martensite Reverse Transformation
Author(s)
Wei, Shaolou; Jiang, Menglei; Tasan, Cemal
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By investigating a metastable high-entropy alloy, we report a latent strengthening mechanism that is associated with the thermally-induced epsilon-martensite-to-austenite reverse transformation. We show this reversion-assisted hardening effect can be achieved in the same time-scale and temperature range as conventional bake-hardening treatment, but leads to both improved strength and cumulative ductility. Key mechanisms are discussed considering transformation kinetics, kinematics, strengthening and ductilization modules.
Date issued
2019-07Department
Massachusetts Institute of Technology. Department of Materials Science and EngineeringJournal
Metallurgical and Materials Transactions A
Publisher
Springer Science and Business Media LLC
Citation
Wei, Shaolou et al. "Interstitial-Free Bake Hardening Realized by Epsilon Martensite Reverse Transformation." Metallurgical and Materials Transactions A 50, 9 (September 2019): 3985–3991. © 2019 The Minerals, Metals & Materials Society and ASM International
Version: Author's final manuscript
ISSN
1073-5623
1543-1940