Vacuum brazing of Al0.3CoCrFeNi high-entropy alloys with CoCrFeNiNb0.5 eutectic filler metal for wide-temperature range application

被引：1

作者：

Lei, Y. ^{[1
,2
]}

Li, Y. N. ^{[1
]}

Cai, Y. C. ^{[1
]}

Wang, X. Y. ^{[3
]}

Hu, S. P. ^{[3
]}

Song, X. G. ^{[3
]}

Chen, Z. B. ^{[4
]}

Shi, H. C. ^{[5
]}

机构：

[1] Qingdao Univ Technol, Sch Mech & Automot Engn, Qingdao 266000, Peoples R China

[2] Qingdao Univ Technol, Key Lab Ind Fluid Energy Conservat & Pollut Contro, Minist Educ, Qingdao 266520, Peoples R China

[3] Harbin Inst Technol, Natl Key Lab Precis Welding & Joining Mat & Struct, Harbin 150001, Peoples R China

[4] Harbin Engn Univ, Yantai Res Inst, Yantai 264006, Peoples R China

[5] Shanghai Univ Engn Sci, Sch Mat Sci & Engn, Shanghai 201620, Peoples R China

来源：

VACUUM | 2024年 / 230卷

基金：

中国国家自然科学基金;

关键词：

High-entropy alloys; Filler metals; Metallurgical compatibility; Shear strength; MECHANICAL-PROPERTIES; MICROSTRUCTURE; STRENGTH; DUCTILITY; JOINT;

D O I：

10.1016/j.vacuum.2024.113670

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The service conditions of high-entropy alloys (HEAs) joints brazed with conventional filler metals (FMs) can be confined because few HEAs phases generate in the braze zone. In this study, a multicomponent CoCrFeNiNb0.5 eutectic HEAs (EHEAs) FM was developed to braze Al0.3CoCrFeNi HEAs in vacuum, the braze zone mainly consisted of face-centered cubic (FCC) and Laves lamellar structure, exhibiting a superior metallurgical compatibility with the Al0.3CoCrFeNi base metals (BMs). The shear strength and shear displacement of brazed joints reached 461 MPa/1.35 mm at room temperature (RT), 741 MPa/1.42 mm at -196 degrees C and 380 MPa/1.62 mm at 700 degrees C, respectively. This strategy can stimulate the fabrication and wide-temperature range applications of HEAs brazed components by exploiting the structural and performance merits of EHEAs FMs.

引用

页数：8

共 26 条

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