Effects of Ti and Al additions on microstructure and mechanical properties of FeCrNi medium entropy alloy fabricated by laser powder bed fusion

doi:10.1016/j.matchar.2024.113645

IMR OpenIR

	Effects of Ti and Al additions on microstructure and mechanical properties of FeCrNi medium entropy alloy fabricated by laser powder bed fusion
	Bai, Xi 1,2; Wang, Jianqiu 2,3; Han, Enhou 3; Wang, Lei 4
通讯作者	Wang, Jianqiu(wangjianqiu@icost.ac.cn)
	2024-02-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	208 页码:12
摘要	Microstructure and mechanical properties of Ti and Al containing FeCrNi medium entropy alloy (MEA) were investigated. FeCrNi and (FeCrNi)94Ti3Al3 MEAs were successfully fabricated using laser powder bed fusion. The addition of Ti and Al changes the phase formation and tensile properties of FeCrNi MEA. With the addition of alloying elements Ti and Al, the structure of FeCrNi MEA changed from single FCC structure to FCC + BCC dualphase structure. Furthermore, the dual-phase structure resulted in a significant enhancement in both the yield strength and strain hardening rate. The high yield strength (- 948 MPa) and ultimate tensile strength (- 1421 MPa) of as-built (FeCrNi)94Ti3Al3 MEA was attributed to the combined effect of strengthening mechanisms including solid solution strengthening, grain boundary strengthening, dislocation strengthening, and back stress strengthening. The criteria for phase formation in the FeCrNi-based MEAs were discussed. This work provided a new insight for high-mechanical properties and low-cost dual-phase additive manufactured high-entropy alloys for nuclear applications.
关键词	Medium entropy alloys Laser powder bed fusion Dual phase Mechanical properties
资助者	National Natural Science Foundation of China
DOI	10.1016/j.matchar.2024.113645
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U22B2067]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001167965100001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184614
专题	中国科学院金属研究所
通讯作者	Wang, Jianqiu
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 3.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China 4.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China
推荐引用方式 GB/T 7714	Bai, Xi,Wang, Jianqiu,Han, Enhou,et al. Effects of Ti and Al additions on microstructure and mechanical properties of FeCrNi medium entropy alloy fabricated by laser powder bed fusion[J]. MATERIALS CHARACTERIZATION,2024,208:12.
APA	Bai, Xi,Wang, Jianqiu,Han, Enhou,&Wang, Lei.(2024).Effects of Ti and Al additions on microstructure and mechanical properties of FeCrNi medium entropy alloy fabricated by laser powder bed fusion.MATERIALS CHARACTERIZATION,208,12.
MLA	Bai, Xi,et al."Effects of Ti and Al additions on microstructure and mechanical properties of FeCrNi medium entropy alloy fabricated by laser powder bed fusion".MATERIALS CHARACTERIZATION 208(2024):12.