Work hardening behavior of hot-rolled metastable FeCoNiAlTiMo medium-entropy alloy; In situ neutron diffraction analysis

熱間圧延された準安定FeCoNiAlTiMo中エントロピー合金の加工硬化挙動; その場中性子回折法による解析

Kwon, H.*; Harjo, S.   ; 川崎 卓郎   ; Gong, W.   ; Jeong, S. G.*; Kim, E. S.*; Sathiyamoorthi, P.*; 加藤 秀実*; Kim, H. S.*

Kwon, H.*; Harjo, S.; Kawasaki, Takuro; Gong, W.; Jeong, S. G.*; Kim, E. S.*; Sathiyamoorthi, P.*; Kato, Hidemi*; Kim, H. S.*

Metastability engineering is a strategy to enhance the strength and ductility of alloys via deliberately lowering phase stability and prompting deformation-induced martensitic transformation. In this work, the martensitic transformation and its effect on the mechanical response of a FeCoNiAlTiMo medium-entropy alloy (MEA) were studied by in situ neutron diffraction under tensile loading. This work shows how great a role FCC to BCC martensitic transformation can play in enhancing the mechanical properties of ferrous MEAs.