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Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418
Pang M(庞铭); Yu G(虞钢); Wang HH(王恒海); Zheng CY(郑彩云); Yu, G (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, 15 Beisihuanxi Rd, Beijing 100080, Peoples R China.
2008
发表期刊Journal of Materials Processing Technology
卷号207期号:1-3页码:271-275
ISSN0924-0136
摘要Experiments of laser welding cast nickel-based superalloy K418 were conducted. Microstructure of the welded seam was characterized by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectrometer (EDS). Mechanical properties of the welded seam were evaluated by microhardness. The corresponding mechanisms were discussed in detail. Results show that the laser welded seam have non-equilibrium solidified microstructures consisting of Cr-Ni-Fe-C austenite solid solution dendrites as the dominant and some fine and dispersed Ni-3(Al,Ti) gamma' phase as well as little amount of MC needle carbides and particles enriched in Nb, Ti and Mo distributed in the interdendritic regions, cracks originated from the liquation of the low melting points eutectics in the HAZ grain boundary are observed, the average microhardness of the welded seam and HAZ is higher than that of the base metal due to alloy elements' redistribution of the strengthening phase gamma'. (C) 2008 Elsevier B.V. All rights reserved.
关键词Nickel-based Superalloy Needle Carbides Cracks Aluminum
DOI10.1016/j.jmatprotec.2007.12.091
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收录类别SCI
语种英语
WOS记录号WOS:000259786200033
关键词[WOS]ALUMINUM
WOS研究方向Engineering ; Materials Science
WOS类目Engineering, Industrial ; Engineering, Manufacturing ; Materials Science, Multidisciplinary
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/25886
专题力学所知识产出(1956-2008)
通讯作者Yu, G (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, 15 Beisihuanxi Rd, Beijing 100080, Peoples R China.
推荐引用方式
GB/T 7714
Pang M,Yu G,Wang HH,et al. Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418[J]. Journal of Materials Processing Technology,2008,207(1-3):271-275.
APA Pang M,Yu G,Wang HH,Zheng CY,&Yu, G .(2008).Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418.Journal of Materials Processing Technology,207(1-3),271-275.
MLA Pang M,et al."Microstructure Study Of Laser Welding Cast Nickel-Based Superalloy K418".Journal of Materials Processing Technology 207.1-3(2008):271-275.
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