CoCrFeNiMo0.2 high entropy alloy with excellent mechanical properties and corrosion resistance prepared by laser-powder bed fusion

被引：4
|
作者：
Chen, Xinsheng [1 ]
Wang, Qipeng [1 ]
Liang, Yuzheng [1 ]
Huang, Jiewen [1 ]
Peng, Yong [1 ]
Wang, Kehong [1 ]
Kong, Jian [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, 200 Xiaolingwei, Nanjing 210094, Peoples R China
来源：
INTERMETALLICS | 2023年 / 163卷
关键词：
Laser-powder bed fusion; High entropy alloy; Microstructure; Strengthening mechanism; Corrosion behavior; TENSILE PROPERTIES; MICROSTRUCTURE; STRENGTH; NICKEL;
D O I：
10.1016/j.intermet.2023.108082
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, CoCrFeNiMo0.2 high entropy alloy (HEA) was successfully prepared by laser-powder bed fusion (LPBF). The superior mechanical properties were achieved in the as-printed sample, with the yield strength, ultimate tensile strength, and fracture elongation determined as 776 MPa, 929 MPa and 37.4%, respectively. The as-printed sample exhibits a single-phase face-centered-cubic (FCC) structure without precipitating out a second phase. The microstructural feature of epitaxial columnar grain growth with <001> texture in the as-printed sample can be observed. And the strengthening mechanism of the as-printed sample was also carefully studied. Moreover, the corrosion resistance of the as-printed sample in 3.5 wt% NaCl solution is better than 316L and 304 stainless steel.
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收藏
页数：7
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