硬质合金与钢添加含Ni中间层电子束焊接接头分析

来源 :The 6rd International Conference on Power Beam Processing Te | 被引量 : 0次 | 上传用户:fullsfulls
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  对YGH-60硬质合金与45钢添加含Ni30%的中间层进行真空电子束焊接试验,借助金相显微镜、扫描电镜、显微硬度及拉伸测试等分析手段,对接头的焊缝组织、成分、力学性能等进行了分析,并对断口形貌进行了观察与分析。实验结果表明,添加含Ni中间层能够阻碍Fe与C的相互扩散,抑制脆性相的产生;由于Ni强度低,塑性好,可以缓和因硬质合金和钢的线膨胀系数不同所产生的热应力,提高抗裂性。
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