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

被引：3

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.

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页数：8

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