待焊表面组织对异种钢超塑性焊接的影响Effect of Welding Surface Microstructure on Superplastic Solid-State Welding for Different Steels
张柯柯,杨蕴林,徐东,赵宁,王长生,祝要民
摘要(Abstract)：
对40Cr/T10A钢试样及试样待焊表面分别用盐浴加热循环淬火、高频淬火及激光淬火的组织超细化预处理,探讨了钢待焊表面组织对40Cr/T10A异材恒温超塑焊(ISSW)工艺、接头组织及性能的影响。试验结果表明,钢待焊表面组织越细,ISSW所需焊接温度向低温区移动、初始应变速率向高应变速率区域移动、ISSW所需时间越短;即使待焊双方一方实施组织超细化,也可实现接头拉伸强度达40Cr母材强度的ISSW,但所需压接时间稍长。ISSW接头中存在着明显的“界面超细晶区”、“过渡区”等组织特征区域。
关键词(KeyWords)： 组织超细化;超塑焊接;接头质量
基金项目(Foundation): 河南省高校创新人才基金(教高2004-294);; 河南省高校杰出科研人才创新工程项目(2004KYCX020);; 河南省自然科学基金(0511050800);; 河南省教育厅自然科学基金(2003430211)
作者(Author): 张柯柯,杨蕴林,徐东,赵宁,王长生,祝要民
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