Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2008.10a
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- Pages.313-316
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- 2008
Microstructure and Mechanical Properties of Strip Casted Ag-27%Cu-25%Zn-3%Sn Brazing Alloy
브레이징용 Ag-27%Cu-25%Zn-3%Sn 박판 주조 스트립의 미세조직 및 기계적 특성 연구
Abstract
This work sought to examine the suitability of twin roll strip casting for Ag-27%Cu-25%Zn-3%Sn brazing alloy (BAg-7A) and to investigate the mechanical properties and microstructure of the strip. The effect of aging heat treatment on the properties was also studied,. This new manufacturing process has applications in the production of the brazing alloy. XRD and microstructural analysis of the Ag-27%Cu-25%Zn-3%Sn strip represented eutectic microstructure of a Cu-rich phase and a Ag-rich matrix regardless of heat treatment. The results of mechanical tests showed tensile strength of 470MPa, a significant enhancement, and an 18% elongation of the twin roll casted strip, due mainly to the solid solution strengthening of Zn atoms (
Keywords
- Ag-27%Cu-25%Zn-3%Sn;
- BAg-7A;
- Brazing Strip;
- Twin Roll Strip Casting;
- Aging;
- Mechanical Property;
- Ag-rich Matrix;
- Cu-rich Phase