Laser powder bed fusion to fabricate high-entropy alloy FeCoCrNiMo0.5 with excellent high-temperature strength and ductility

被引：4
|
作者：
Lin, Danyang [1 ,2 ]
Chen, Qi [1 ,2 ]
Xi, Xin [1 ,2 ]
Ma, Rui [3 ]
Shi, Zhifeng [1 ]
Song, Xiaoguo [1 ,2 ]
Xia, Hongbo [1 ,4 ]
Bian, Hong [1 ,2 ]
Tan, Caiwang [1 ,2 ]
Lu, Yongxin [5 ]
Li, Runsheng [6 ]
机构：
[1] Harbin Inst Technol, Natl Key Lab Precis Welding & Joining Mat & Struct, Harbin 150001, Peoples R China
[2] Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai 264209, Peoples R China
[3] Beijing Power Machinery Inst, Beijing 100000, Peoples R China
[4] Harbin Inst Technol, Zhengzhou Res Inst, Zhengzhou 450018, Peoples R China
[5] Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Peoples R China
[6] China Univ Petr East China, Coll Mech & Elect Engn, Qingdao 266580, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2024年 / 900卷
关键词：
Laser powder bed fusion; High-entropy alloy; High-temperature mechanical properties; Strengthening mechanism; MECHANICAL-PROPERTIES; MICROSTRUCTURE; TENSILE; BEHAVIOR; CARBON;
D O I：
10.1016/j.msea.2024.146413
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
FeCoCrNi, a high-entropy alloy fabricated by laser powder bed fusion, has excellent room-temperature mechanical properties but poor high-temperature mechanical performance. To expand the application of FeCoCrNi, in this study, we added Mo to form a precipitates, which improved the high-temperature mechanical properties of the alloy via Orowan strengthening. We also elucidated the main deformation mechanism of FeCoCrNiMo0.5, involving the transformation of the deformational mode from dislocation-based motion to twinning deformation.
引用
收藏
页数：8
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