2026-10-12T04:35:38Zhttps://www.radar-service.eu/oai/OAIHandler

10.35097/19372026-10-09T10:59:38Zradar4kit

https://dx.doi.org/10.35097/1937 Lu, Yemao Zhu, Gaoming Ivanisenko, Y. Hahn, H. Overcoming plasticity reduction in a severely deformed nano-grained metastable alloy Karlsruhe Institute of Technology 2024 Engineering dataset Dataset info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Generally, most bulk metallic materials reveal an increased strength but a loss of ductility after cold deformation, referred as the strength–ductility trade-off. This phenomenon is moderately less in some metastable alloys, which exhibit a transformation-induced plasticity (TRIP), i.e., a martensitic transformation from FCC phase to BCC phase. However, most of them show outstanding mechanical properties induced by TRIP effect only at cryogenic conditions. In this study, we present a strategy to overcome this problem by introducing a high density of crystalline defects into a Fe-based metastable alloy by refining grains to a nanometer scale. This procedure significantly improves the kinetics and reduces the driving force for TRIP. As a result, the TRIP effect originally occurring at cryogenic temperature in the Fe-based metastable alloy, is also active at ambient conditions, contributing to a strength-ductility synergy and overcoming cold working induced sacrifice of ductility. Raw data for the figures metastable alloy transformation induced plasticity nano grains https://publikationen.bibliothek.kit.edu/1000168805 application/x-tar