TY - JOUR
T1 - Microstructure of and mechanical properties of an as-cast fine-grain dual-phase Fe-based high entropy alloy formed via solid-state phase transformation
AU - Chen, Chen
AU - Zhang, Weiwei
AU - Zhang, Engui
AU - Wang, Wei
AU - Wei, Ran
AU - Chen, Junli
AU - Yuan, Shuhan
AU - Wang, Tan
AU - Zhang, Tao
AU - Guan, Shaokang
AU - Jiang, Jianzhong
AU - Li, Fushan
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/3/24
Y1 - 2022/3/24
N2 - In this paper, a novel Fe49.85Cr10.03Mn10.03Co10.03Ni10.03Al10.03 high entropy alloy (HEA) with dual-phase fine-grain structure was designed and fabricated by arc-melting. Its microstructure, as well as mechanical properties at room temperature and cryogenic temperature, have been systematically investigated. It is found that this as-cast Fe-based HEA is composed of face-centered cubic (FCC) and body-centered cubic (BCC) phases, and the stick-like FCC fine grains are derived from solid-state phase transformation of BCC phase during cooling. Moreover, it shows similar tensile strength and good plasticity at room temperature and cryogenic temperature, indicating high and stable mechanical properties at a wide range of temperatures. This work provides a novel route for designing high-performance fine-grain HEAs without mechanical/heat treatment, which is beneficial for further development of HEAs.
AB - In this paper, a novel Fe49.85Cr10.03Mn10.03Co10.03Ni10.03Al10.03 high entropy alloy (HEA) with dual-phase fine-grain structure was designed and fabricated by arc-melting. Its microstructure, as well as mechanical properties at room temperature and cryogenic temperature, have been systematically investigated. It is found that this as-cast Fe-based HEA is composed of face-centered cubic (FCC) and body-centered cubic (BCC) phases, and the stick-like FCC fine grains are derived from solid-state phase transformation of BCC phase during cooling. Moreover, it shows similar tensile strength and good plasticity at room temperature and cryogenic temperature, indicating high and stable mechanical properties at a wide range of temperatures. This work provides a novel route for designing high-performance fine-grain HEAs without mechanical/heat treatment, which is beneficial for further development of HEAs.
KW - High entropy alloys
KW - Mechanical properties
KW - Microstructure
KW - Orientation relationship
KW - Phase transformation
UR - https://www.scopus.com/pages/publications/85124206227
U2 - 10.1016/j.msea.2022.142779
DO - 10.1016/j.msea.2022.142779
M3 - 文章
AN - SCOPUS:85124206227
SN - 0921-5093
VL - 838
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
M1 - 142779
ER -