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논문 기본 정보

자료유형
학술저널
저자정보
Furkan Khan (University of Seoul) Sri Harini Rajendran (University of Seoul) Jae Pil Jung (University of Seoul)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.30 No.5
발행연도
2024.5
수록면
1,145 - 1,169 (25page)
DOI
10.1007/s12540-023-01582-9

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초록· 키워드

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Continuous development of novel materials for various engineering and industrial applications including automotive, aerospace,electrical and petrochemical industries demands the continuous advancement of novel brazing filler metals to joinsimilar and dissimilar materials. Furthermore, developing complex materials, for which traditional fillers cannot adequatelyform joints, necessitates the evolution of novel fillers. High entropy alloys (HEAs) fillers are one of the most exciting developmentsin the field of materials science in recent years. The aim of this review is to provide the current status and progresson HEAs brazing filler metals to join similar and dissimilar materials including metal-to-ceramics joining. HEAs constitutea new class of materials, containing five or more than five elements in equimolar or near equimolar compositions with thepossible alloying concentration of each principal element varying from 5 to 35 at%. HEAs as a brazing filler metal exhibitsan excellent set of desirable properties including mechanical and functional properties, good corrosion and oxidation resistance,exceptional wear resistance, and high-temperature stability. In brazing applications, the use of traditional filler metalsleads to the formation of brittle intermetallic compounds (IMCs), segregation of elements, and residual stresses at the jointinterface that eventually affect the joint performance. These microstructural changes become more serious during dissimilarjoining especially metal-to-ceramic brazing. Owing to the high entropy effect, HEAs filler results in better mixing of fillerelements, forming random solid solution structure, thus hindering the formation of brittle IMCs.

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