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자료유형
학술대회자료
저자정보
저널정보
대한용접·접합학회 대한용접학회 특별강연 및 학술발표대회 개요집 대한용접학회 2006년도 추계 학술발표대회 논문집 제47권
발행연도
2006.10
수록면
319 - 322 (4page)

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Brazing of Al to Cu using Al-Si-Mg-Bi brazing alloy has been carried out in a vacuum furnace. In the brazed interlayer, there were two kinds of intermetallic compounds. One of these intermetallic compounds was θ phase and the other was δ(Cu₃Al₂). Tensile strength of the joint was only about 15㎫. Deformation behavior of Al/Cu brazing joint was brittle without deformation of the base metal. The specimen was fractured in the intermetallic compound which was mainly θ phase. In order to improve the tensile strength of Al/Cu dissimilar joint, Cu cladding Ag (thickness: 0.1㎜) substituted for Cu. As the result, tensile strength of the joint was about 70㎫ and the specimen was fractured in an Al base metal. In this joint, plate-like intermetallic compound, δ (Ag₂Al) was formed in the brazed interlayer. The shape of δ(Ag₂Al) was quite different from θ phase found in Al/Cu joint. It was considered that the shape of reaction layer remarkably affected to the strength of the Al/Ag-Cu clad dissimilar joint.

목차

Abstract
1. Introduction
2. Materials Used and Experimental Procedures
3. Results
4. Discussion
5. Conclusions
6. References

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