热处理对高频感应FeCrBSi熔覆层组织及性能的影响
Surface Technology(2011)
Abstract
采用高频感应熔覆技术在圆柱试棒表面制备了FeCrBSi熔覆层,并研究了热处理对该熔覆层组织及性能的影响,结果表明:FeCrBSi熔覆层均匀致密,无缺陷,与基体达到冶金结合;热处理可使界面均匀化,组织稳定化,界面处化学成分连续分布;热处理后熔覆层组织由奥氏体转变为马氏体,析出二次碳化物,共晶碳化物数量减少,形状由鱼骨状改成块状;热处理前FeCrBSi熔覆层硬度为59.6HRC,耐磨性是基体的2.35倍,但热处理后硬度为57.2HRC,耐磨性为基体的1.84倍,均有小幅下降。
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Key words
wear resistance,heat treatment,high frequency induction cladding(HFIC),microstructure,FeCrBSi coating
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