IMECH-IR  > 力学所知识产出(1956-2008)
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.
Source PublicationJournal of Materials Processing Technology
2008
Volume207Issue:1-3Pages:271-275
ISSN0924-0136
AbstractExperiments 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.
KeywordNickel-based Superalloy Needle Carbides Cracks Aluminum
DOI10.1016/j.jmatprotec.2007.12.091
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000259786200033
WOS KeywordALUMINUM
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Industrial ; Engineering, Manufacturing ; Materials Science, Multidisciplinary
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/25886
Collection力学所知识产出(1956-2008)
Corresponding AuthorYu, G (reprint author), Chinese Acad Sci, Inst Mech, Lab Laser Intelligent Mfg, 15 Beisihuanxi Rd, Beijing 100080, Peoples R China.
Recommended Citation
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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