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
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
卷号699期号:-页码:48-54
文章类型期刊论文
摘要GH3535 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.
关键词Single-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
关键词[WOS]SINGLE-CRYSTAL SUPERALLOY ; STRESS-CORROSION CRACKING ; MO-CR ALLOY ; THERMAL EXPOSURE ; PRIMARY WATER ; WELD JOINT ; DEFORMATION ; EVOLUTION ; TEMPERATURE ; STEEL
收录类别SCI
语种英语
WOS记录号WOS:000404816600006
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28733
专题中科院上海应用物理研究所2011-2018年
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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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