Sr,Ti对Al-Si-Zn钎料6061铝合金钎焊接头组织的影响

稀有金属材料与工程, 2013, 42(12): 2442-2446.

Sr,Ti对Al-Si-Zn钎料6061铝合金钎焊接头组织的影响

戴玮 ^1, , 薛松柏 ^2, , 孙波 ^3, , 娄江 ^4, , 王水庆 ^5,

1.南京航空航天大学,江苏南京210016

2.南京航空航天大学,江苏南京210016

3.浙江新锐焊接材料有限公司,浙江嵊州312452

4.浙江新锐焊接材料有限公司,浙江嵊州312452

5.浙江新锐焊接材料有限公司,浙江嵊州312452

基金项目: The Ministry of Science and Technology,China(2009GJC20040) Foundation of Scientist and Technician Serve the Enterprise

关键词：钎焊 , 6061铝合金 , Al-Si-Zn钎料 , Ti

Study on Microstructure of 6061 Aluminum Alloy Brazed with Al-Si-Zn Filler Metals Bearing Sr and Ti

Dai Wei ^1, , Xue Songbai ^2, , Sun Bo ^3, , Lou Jiang ^4, , Wang Suiqing ^5,

1.南京航空航天大学,江苏南京210016

2.南京航空航天大学,江苏南京210016

3.浙江新锐焊接材料有限公司,浙江嵊州312452

4.浙江新锐焊接材料有限公司,浙江嵊州312452

5.浙江新锐焊接材料有限公司,浙江嵊州312452

Keywords： Brazing , 6061 Al , Al-Si-Zn filler metal , Ti

制备了Sr及Ti变质的Al-Si-Zn钎料,并将其应用于6061铝合金的钎焊,研究Sr及Ti对Al-Si-Zn钎制6061铝合金钎焊性能的影响.结果表明:锌的加入使得钎料熔点由铝硅共晶温度下降至520℃左右.添加少量改性元素Sr及细化晶粒元素Ti,极大优化了钎料中Al-Si共晶的形态与分布,同时也细化了钎料中的α-Al固溶体.向钎料中添加0.08％Ti元素,使得原来Al-Si-Zn-Sr-0.04Ti钎料钎缝中大块团簇状的铝硅共晶均匀分布于α-Al固溶体之间.在6061铝合金钎的焊界面处可以发现较为明显的过渡层,由于钎焊过程中母材元素发生了向钎料中扩散,母材中的锰元素与钎料中的铁杂质生成块状锰铁相避免了针状β-Fe的生成.

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