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K418与42CrMo异种金属激光焊接接头组织演变规律
庞铭; 谭建松; 王建平; 吴波; 解志民; 郑彩云
Source Publication2009中国功能材料科技与产业高层论坛文集.中国仪器仪表学会仪表材料分会,2009,p.355-357
2009-11-07
Pages355-357
Conference Name2009中国功能材料科技与产业高层论坛
Conference Date2009-11-07
Conference Place中国江苏镇江
Abstract研究了额定功率为3kW的Nb:YAG激光焊接K418与42CrMo异种金属,通过光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)、能谱仪(EDS)分析了焊缝接头组织和成分。结果表明,焊缝与母材交界组织为具有一定方向的枝晶组织,焊缝中心为等轴晶。由于激光焊接熔池的非平衡凝固,焊缝枝晶间弥散分布着颗粒状的Laves相、针状的MC碳化物和8字形的γ′。Laves相具有熔点低、硬和脆的特点,在焊缝区域常成为裂纹萌生和扩展的地方。为了提高焊缝的力学性能,需要优化工艺参数,抑制Laves的形成。
Keyword激光焊接 K418 42crmo 组织
Language中文
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43103
Collection先进制造工艺力学实验室
Corresponding Author庞铭
Recommended Citation
GB/T 7714
庞铭,谭建松,王建平,等. K418与42CrMo异种金属激光焊接接头组织演变规律[C]2009中国功能材料科技与产业高层论坛文集.中国仪器仪表学会仪表材料分会,2009,p.355-357,2009:355-357.
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