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

被引：6

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.

引用

页数：7

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