TY - JOUR
T1 - Hot deformation behavior of an Al13Cr10Fe40Ni36Mo1 hypoeutectic high entropy alloy
AU - Qiu, Yunji
AU - Shi, Xinbo
AU - Bai, Xiaoyu
AU - Wang, Chuwen
AU - Cui, Dingcong
AU - Li, Junjie
AU - He, Feng
AU - Wang, Jincheng
AU - Wang, Zhijun
N1 - Publisher Copyright:
© 2026 The Authors.
PY - 2026/5/1
Y1 - 2026/5/1
N2 - Eutectic high entropy alloys (EHEAs), combining excellent comprehensive properties with good castability, are promising materials. Hot working plays a pivotal role in refining the microstructure and enhancing the properties of EHEAs. This study investigated the hot deformation behavior of an Al13Cr10Fe40Ni36Mo1 hypoeutectic HEA via uniaxial compression tests at 1173-1453 K and strain rates of 0.05-5 s−1. The constitutive model was developed to describe the flow behavior, and the hot processing map was established via the Dynamic Material Model (DMM). Dynamic recrystallization (DRX) occurred in two domains 1423-1453 K at 0.5-5 s−1 and 1423-1453 K with 0.05 s−1. The FCC matrix underwent softening primarily through discontinuous dynamic recrystallization (DDRX), and the B2 matrix was softened mainly through continuous dynamic recrystallization (CDRX). At 1453 K, elevated strain rates facilitated the formation of Σ3 TBs, which promoted DRX in the FCC matrix. By correlating the processing map with the corresponding microstructures, the optimal hot working window was identified as 1423-1453 K and 0.5-5 s−1. This study contributes to advancing the industrial application and development of hypoeutectic HEAs.
AB - Eutectic high entropy alloys (EHEAs), combining excellent comprehensive properties with good castability, are promising materials. Hot working plays a pivotal role in refining the microstructure and enhancing the properties of EHEAs. This study investigated the hot deformation behavior of an Al13Cr10Fe40Ni36Mo1 hypoeutectic HEA via uniaxial compression tests at 1173-1453 K and strain rates of 0.05-5 s−1. The constitutive model was developed to describe the flow behavior, and the hot processing map was established via the Dynamic Material Model (DMM). Dynamic recrystallization (DRX) occurred in two domains 1423-1453 K at 0.5-5 s−1 and 1423-1453 K with 0.05 s−1. The FCC matrix underwent softening primarily through discontinuous dynamic recrystallization (DDRX), and the B2 matrix was softened mainly through continuous dynamic recrystallization (CDRX). At 1453 K, elevated strain rates facilitated the formation of Σ3 TBs, which promoted DRX in the FCC matrix. By correlating the processing map with the corresponding microstructures, the optimal hot working window was identified as 1423-1453 K and 0.5-5 s−1. This study contributes to advancing the industrial application and development of hypoeutectic HEAs.
KW - Dynamic material model
KW - Dynamic recrystallization
KW - Eutectic high entropy alloys
KW - Microstructure
KW - Twin boundary
UR - https://www.scopus.com/pages/publications/105035901850
U2 - 10.1016/j.jmrt.2026.04.151
DO - 10.1016/j.jmrt.2026.04.151
M3 - 文章
AN - SCOPUS:105035901850
SN - 2238-7854
VL - 42
SP - 4744
EP - 4755
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
ER -