低熔点Ag-Al-Sn合金钎料的钎焊工艺性能研究

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基金项目:

核燃料及材料国家重点实验室基金项目(51481050101HZ1401)

Study on Brazability of Low-melting-point Ag-AI-Sn Brazing Filler

National Key Laboratory for Nuclear Fuel & Materials, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 设计、制备了2种不同成分的低熔点Ag-Al-Sn合金钎料,参照相关的国家标准,评价了钎料的熔化特性、钎料在钛合金和不锈钢上的润湿铺展能力、钎料在钛合金和不锈钢异种金属间的填缝能力,以及钛合金/不锈钢异种金属钎缝的强度。结果表明,Ag-8Al-6Sn-1Ni钎料的钎焊工艺性能优于Ag-8Al-6Sn钎料。采用金相显微镜、扫描电镜对钛合金/不锈钢钎缝进行了微观分析。结果表明,Ag-8Al-6Sn钎料与母材形成的钎焊接头结合牢固,组织性能良好。
- Ag-Al-Sn合金钎料 /
- 钎焊性 /
- 接头组织
Abstract: Two kinds of low-melting-point filler metals(Ag-8Al-6Sn and Ag-8Al-6Sn-1Ni) have been prepared. Based on the concerned national standards, the melting characteristic, the spreadability and the clearance fillabitity on and between the titanium alloy and stainless steel,and the strength of the joints between titanium alloy and stainless steel had been evaluated.. The results indicated that the Ag-8Al-6Sn-1Ni brazing filler has better brazing technological performance than the Ag-8Al-6Sn filler. The seam of the titanism and stainless steel joints was analyzed by metallographic examination and SEM. The results indicated that the brazed joints using the Ag-8Al-6Sn filler were reliable,and its organic property was favorable.
- Ag-Al-Sn brazing filler /
- Brazability /
- Microstructure