IMECH-IR  > 力学所知识产出(1956-2008)
K418高温合金和42CrMo合金钢的激光焊接
Alternative TitleLaser welding of superalloy K418 to 42CrMo steel
刘秀波; 虞钢; 庞铭; 张振国; 范积伟
Source Publication中国有色金属学报
2008-03-15
Volume18Issue:3Pages:444-448
ISSN1004-0609
Abstract进行了K418高温合金和42CrMo钢的激光焊接实验,分别采用OM、SEM、XRD和EDS等手段分析了焊缝的金相组织和物相组成,评价了焊缝的显微硬度和拉伸强度。结果表明:焊缝主要由树枝状非平衡凝固的FeCrNiC(力固溶体组成,此外,还有少量细小、弥散的Ni_3Al(γ′)相、Laves颗粒和少量MC碳化物分布在树枝晶间区域。由于主要强化相γ′在激光辐照后的部分溶解和随后快速凝固的抑制作用,焊缝的硬度虽分布较均匀但低于母材。由于没有获得穿透的焊接接头,焊接接头的强度约只有母材的88.5%,焊缝的断裂机制是塑性和脆性断裂的混合机制。由于在焊缝中存在一些Laves颗粒,这促进了微裂纹和微孔的形成和扩展,降低了焊接接头的抗拉强度。
Keyword激光焊接 焊缝 组织 力学性能
Indexed ByCSCD
Language中文
CSCD IDCSCD:3258003
Citation statistics
Cited Times:6[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/40046
Collection力学所知识产出(1956-2008)
Corresponding Author刘秀波
Recommended Citation
GB/T 7714
刘秀波,虞钢,庞铭,等. K418高温合金和42CrMo合金钢的激光焊接[J]. 中国有色金属学报,2008,18(3):444-448.
APA 刘秀波,虞钢,庞铭,张振国,&范积伟.(2008).K418高温合金和42CrMo合金钢的激光焊接.中国有色金属学报,18(3),444-448.
MLA 刘秀波,et al."K418高温合金和42CrMo合金钢的激光焊接".中国有色金属学报 18.3(2008):444-448.
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