采用高频感应钎焊技术制备碳钢/不锈钢复合板,并对不同钎焊温度下钎焊接头的显微组织进行了分析。结果表明:以H62黄铜箔为钎料制备出的碳钢/不锈钢复合板,在910-950℃下都形成了冶金结合界面;在该界面存在元素扩散现象,并有岛状物形成,该岛状物优先在碳ta/黄铜界面形成,随着钎焊过程的进行向黄铜钎料层中生长,直至贯穿整个钎料层;其具有镍-铬-铁相结构,是碳钢、不锈钢和钎料相互扩散并发生反应的产物。
Carbon steel/stainless steel clad plate was prepared by high-frequency induction brazing technology, and the microstructure of the brazed joint prepared at different brazing temperatures was studied. The results show that the metallurgical bond of carbon steel and stainless steel could be achieved using H62 brass foil as brazing filler metal at 910--950 ℃; element diffusion was observed and island phase formed on the imerface. The island phase preferentially formed on the interface of carbon steel/brass, then grew with the increase of brazing temperature and ran through the filler metal layer at last. The island phase had Ni-Cr-Fe phase structure which was the product of diffusion and reaction among carbon steel, stainless steel and filler metal.
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