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Effect of post-weld aging treatment on the precipitation and mechanical behavior of Fe-Ni based alloy weldment
Chen, SH; Hu, HL; Zhao, MJ; Rong, LJ; Chen, SH (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2018-03-07
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume718Pages:363-370
AbstractPrecipitation and mechanical behavior of Fe-Ni based alloy weldment in the post-weld aging condition were investigated in the present work. Microstructural analysis showed that an inhomogeneous distribution of gamma' phase was present in the dendritic structure of fusion zone, exhibiting that gamma' phase were precipitated in the interdendritic region while a gamma' phase depletion zone was developed in the dendrite core. Cleavage of the dendritic-interdendritic boundaries could be found in the nail-head region by the combined effects of directional growth of dendrite and inhomogenous distribution of gamma' phase in the dendritic structure during tensile test. Distinct differences in the hydrogen embrittlement susceptibility between the dendrite core and the interdendritic region led to a higher sensitivity to cleavage cracking in the hydrogen-precharged weldment.; Precipitation and mechanical behavior of Fe-Ni based alloy weldment in the post-weld aging condition were investigated in the present work. Microstructural analysis showed that an inhomogeneous distribution of gamma' phase was present in the dendritic structure of fusion zone, exhibiting that gamma' phase were precipitated in the interdendritic region while a gamma' phase depletion zone was developed in the dendrite core. Cleavage of the dendritic-interdendritic boundaries could be found in the nail-head region by the combined effects of directional growth of dendrite and inhomogenous distribution of gamma' phase in the dendritic structure during tensile test. Distinct differences in the hydrogen embrittlement susceptibility between the dendrite core and the interdendritic region led to a higher sensitivity to cleavage cracking in the hydrogen-precharged weldment.
description.department[chen, shenghu ; hu, honglei ; zhao, mingjiu ; rong, lijian] chinese acad sci, inst met res, key lab nucl mat & safety assessment, 72 wenhua rd, shenyang 110016, liaoning, peoples r china
KeywordHeat-affected-zone Liquid-film Migration Electron-beam Welds Solute Redistribution Fusion Zone Nickel-base Cracking Microstructure Susceptibility Solidification
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79435
Collection中国科学院金属研究所
Corresponding AuthorChen, SH (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Chen, SH,Hu, HL,Zhao, MJ,et al. Effect of post-weld aging treatment on the precipitation and mechanical behavior of Fe-Ni based alloy weldment[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,718:363-370.
APA Chen, SH,Hu, HL,Zhao, MJ,Rong, LJ,&Chen, SH .(2018).Effect of post-weld aging treatment on the precipitation and mechanical behavior of Fe-Ni based alloy weldment.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,718,363-370.
MLA Chen, SH,et al."Effect of post-weld aging treatment on the precipitation and mechanical behavior of Fe-Ni based alloy weldment".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 718(2018):363-370.
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