Microstructures and mechanical properties of C-containing FeCoCrNi high-entropy alloy fabricated by selective laser melting

被引：155

作者：

Zhou, Rui ^{[1
]}

Liu, Yong ^{[1
]}

Zhou, Chengshang ^{[1
]}

Li, Siqin ^{[2
]}

Wu, Wenqian ^{[1
]}

Song, Min ^{[1
]}

Liu, Bin ^{[1
]}

Liang, Xiaopeng ^{[3
]}

Liaw, P. K. ^{[4
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310058, Zhejiang, Peoples R China

[3] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[4] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

INTERMETALLICS | 2018年 / 94卷

基金：

中国国家自然科学基金;

关键词：

Selective laser melting; High entropy alloy; Microstructure; Mechanical properties; CARBON CONTENT; EVOLUTION; STRENGTH; BEHAVIOR;

D O I：

10.1016/j.intermet.2018.01.002

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：

Additive manufacturing (AM) is an emerging technology that has been widely used for fabricating components with highly complex shapes. In this work, C-containing FeCoCrNi high entropy alloy with full density was successfully fabricated using selective laser melting (SLM). The effects of processing parameters on the microstructures and mechanical properties were investigated, and the underlying mechanism was discussed. The density of HEA is dependent on the SLM processing parameter. The increase of the SLM scanning power or the decrease of the scanning speed leads to the increase of the density of HEA. The grain size reduced when the high scanning power or the low scanning speed was used. The C-containing HEAs with full density has a yield strength of 650 MPa, and an elongation of 13.5%.

引用

页码：165 / 171

页数：7

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