钢与铜合金超塑焊接接头形成过程物理模型
Physical Model of Forming Process of Superplastic Welding Joint of Steel and Copper Alloy
陈安民
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作者单位：（威海职业学院 机电工程系，山东 威海 264210）
中文关键字：钢； 铬青铜； 固态焊接； 接头； 粘结物
英文关键字：steel; chrome bronze; solid-state welding; welding joint; sticking substance
中文摘要：基于40Cr待焊面表层实施激光淬火组织超细化处理后，与QCr0.5异材实施恒温超塑性固态焊接可行性分析与接头形成过程分析,探讨了恒温超塑性固态焊接接头形成的物理模型。试验结果表明:焊接接头形成过程大致为：接合面紧密接触?邛界面处QCr0.5首先发生常规塑性变形、超塑性变形等?邛氧化膜破碎?邛新界面贴紧?邛QCr0.5磨痕凸起处与40Cr发生连接?邛连接面积逐渐增大?邛界面两侧原子发生互扩散?邛形成界面冶金结合区、原界面消失。
英文摘要：The laser quenched microstructure was ultra refining which was treated base on 40Cr welds surface layer， the feasibility analysis of constant-temperature superplastic solid state welding and analysis of forming process were carried out with QCr0.5 extraordinary talent， then the physical model of joint forming of the constant-temperature superplastic solid state weld was discussed. The results indicate that the approximately forming process of the welding joint is: adjoining plane close contact ?邛 contact surface place QCr0.5 first has the convention plastic deformation, the superplastic distortion and so on ?邛 the oxide film stave ?邛 new contact surface to paste the tight ?邛QCr0.5 polishing scratches bulge place and 40Cr has the connection ?邛 connection area to increase ?邛 the contact surface both sides atom to occur gradually proliferates mutually ?邛 forms the contact surface metallurgy union area, original contact surface vanishing.