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

Y. Lei; Y. N. Li; Y. C. Cai; X. Y. Wang; S. P. Hu; X. G. Song; Z. B. Chen; H. C. Shi

doi:10.1016/j.vacuum.2024.113670

Vacuum brazing of Al_0.3CoCrFeNi high-entropy alloys with CoCrFeNiNb_0.5 eutectic filler metal for wide-temperature range application

Y. Lei
, Y. N. Li
, Y. C. Cai
, X. Y. Wang
, S. P. Hu^*
, X. G. Song^*
, Z. B. Chen
, H. C. Shi

^*Corresponding author for this work

School of Materials Science and Engineering

Qingdao University of Technology
Harbin Institute of Technology
Harbin Engineering University
Shanghai University of Engineering Science

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

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 CoCrFeNiNb_0.5 eutectic HEAs (EHEAs) FM was developed to braze Al_0.3CoCrFeNi HEAs in vacuum, the braze zone mainly consisted of face-centered cubic (FCC) and Laves lamellar structure, exhibiting a superior metallurgical compatibility with the Al_0.3CoCrFeNi 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 °C and 380 MPa/1.62 mm at 700 °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.

Original language	English
Article number	113670
Journal	Vacuum
Volume	230
DOIs	https://doi.org/10.1016/j.vacuum.2024.113670
State	Published - Dec 2024

Keywords

Filler metals
High-entropy alloys
Metallurgical compatibility
Shear strength

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@article{a968884667a24d0fb5da5eb86a01fa6e,

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

abstract = "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 °C and 380 MPa/1.62 mm at 700 °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.",

keywords = "Filler metals, High-entropy alloys, Metallurgical compatibility, Shear strength",

author = "Y. Lei and Li, \{Y. N.\} and Cai, \{Y. C.\} and Wang, \{X. Y.\} and Hu, \{S. P.\} and Song, \{X. G.\} and Chen, \{Z. B.\} and Shi, \{H. C.\}",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier Ltd",

year = "2024",

month = dec,

doi = "10.1016/j.vacuum.2024.113670",

language = "英语",

volume = "230",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Vacuum brazing of Al0.3CoCrFeNi high-entropy alloys with CoCrFeNiNb0.5 eutectic filler metal for wide-temperature range application

AU - Lei, Y.

AU - Li, Y. N.

AU - Cai, Y. C.

AU - Wang, X. Y.

AU - Hu, S. P.

AU - Song, X. G.

AU - Chen, Z. B.

AU - Shi, H. C.

PY - 2024/12

Y1 - 2024/12

N2 - 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 °C and 380 MPa/1.62 mm at 700 °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.

AB - 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 °C and 380 MPa/1.62 mm at 700 °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.

KW - Filler metals

KW - High-entropy alloys

KW - Metallurgical compatibility

KW - Shear strength

UR - https://www.scopus.com/pages/publications/85204963837

U2 - 10.1016/j.vacuum.2024.113670

DO - 10.1016/j.vacuum.2024.113670

M3 - 文章

AN - SCOPUS:85204963837

SN - 0042-207X

VL - 230

JO - Vacuum

JF - Vacuum

M1 - 113670

ER -

Vacuum brazing of Al_0.3CoCrFeNi high-entropy alloys with CoCrFeNiNb_0.5 eutectic filler metal for wide-temperature range application

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Keywords

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