Microstructure and local strains in GH3535 alloy heat affected zone and their influence on the mechanical properties

doi:10.1016/j.msea.2017.05.072

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	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
ISSN	0921-5093
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
DOI	10.1016/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
推荐引用方式 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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