刘秀波,虞钢,庞铭,宋天麟,范莉,周晓京

• 1:苏州大学机电工程学院
• 2:中国科学院力学研究所
• 3:苏州大学应用技术学院

摘要(Abstract)：

采用透射电镜及附带能谱(TEM-EDS)对K418高温合金涡轮盘和42CrMo合金钢转轴激光焊焊缝的微观组织进行了分析。结果表明:焊缝主要由树枝状非平衡凝固的FeCrNiC(γ)固溶体组成,此外,还有少量细小、弥散的Ni3Alγ′相、Laves颗粒和少量MC碳化物分布在树枝晶之间区域;根据热动力学原理对形成这一组织特征的原因进行了简要讨论。

关键词(KeyWords)： 激光焊接;焊缝;微观组织;透射电镜

Abstract:

Keywords:

基金项目(Foundation): 江苏省自然科学基金资助项目(BK2009134);; 苏州大学引进人才科研启动基金(Q4117801)

作者(Author): 刘秀波,虞钢,庞铭,宋天麟,范莉,周晓京

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