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Microstructure and local strains in GH3535 alloy heat affected zone and their influence on the mechanical properties
Chen, SJ; Tsang, DKL; Jiang, L; Yu, K; Li, CW; Li, Z; Li, ZJ; Zhou, XT; Yang, JG
2017
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume699Issue:-Pages:48-54
Subtype期刊论文
AbstractGH3535 alloy plates were welded by Gas Tungsten Arc Welding in order to study the evolution of microstructure and mechanical properties in the heat-affected zone (HAZ). Our results suggest that welding thermal cycles induced the morphology evolution of M6C carbides from block to eutectic near the fusion line in the HAZ. Electron backscatter diffraction (EBSD) results show that significant amounts of plastic strains occurred in the HAZ after welding. In addition, local coherent twin boundaries (Sigma 3) and dislocations were observed to decrease with the distance from the fusion line. Mechanical tests indicate that the hardness, yield strength and ultimate strength in HAZ are higher than those in base metal, and their values decrease with the distance from the fusion line. However, the elongation increases as the strengths decrease. The higher strength and lower elongation in the HAZ are mainly attributed to residual strains with the function of strain-hardening. Moreover, the change of Sigma 3 boundary which is in good agreement with that of elongation suggests a positive influence on the plastic deformation.
KeywordSingle-crystal Superalloy Stress-corrosion Cracking Mo-cr Alloy Thermal Exposure Primary Water Weld Joint Deformation Evolution Temperature Steel
DOI10.1016/j.msea.2017.05.072
WOS KeywordSINGLE-CRYSTAL SUPERALLOY ; STRESS-CORROSION CRACKING ; MO-CR ALLOY ; THERMAL EXPOSURE ; PRIMARY WATER ; WELD JOINT ; DEFORMATION ; EVOLUTION ; TEMPERATURE ; STEEL
Indexed BySCI
Language英语
WOS IDWOS:000404816600006
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28733
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Chen, SJ,Tsang, DKL,Jiang, L,et al. Microstructure and local strains in GH3535 alloy heat affected zone and their influence on the mechanical properties[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,699(-):48-54.
APA Chen, SJ.,Tsang, DKL.,Jiang, L.,Yu, K.,Li, CW.,...&Yang, JG.(2017).Microstructure and local strains in GH3535 alloy heat affected zone and their influence on the mechanical properties.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,699(-),48-54.
MLA Chen, SJ,et al."Microstructure and local strains in GH3535 alloy heat affected zone and their influence on the mechanical properties".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 699.-(2017):48-54.
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