Improving mechanism of both strength and ductility of GH4169 alloy induced by electric-pulse treatment

doi:10.1016/j.msea.2018.03.087

	Improving mechanism of both strength and ductility of GH4169 alloy induced by electric-pulse treatment
	Song, X; Gai, ZY; Cao, XZ; Cao XZ(曹兴忠); An, JL; Wang, L; Liu, Y
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2018
卷号	724 页码:439-443
关键词	Electric-pulse treatment Strength Ductility Precipitate GH4169 alloy
ISSN号	0921-5093
DOI	10.1016/j.msea.2018.03.087
文献子类	Article
英文摘要	The microstructure characteristics of GH4169 alloy aged with electric-pulse treatment (EPT) at 800 degrees C were investigated and tensile properties were examined at high temperature. The tensile test results indicate that the ultimate stress, yield stress and fracture elongation increase simultaneously in the alloy aged with EPT compared with that of normal aged alloy. The vacancy concentration of the alloy aged with EPT increases proved by positron annihilation spectrometer compared with that of normal aged alloy. Vacancy concentration increase leads to increasing of yield stress at the initial stage of tensile deformation. Farther, vacancy induces ultrafine nm-sized gamma(") phase to precipitate during tensile deformation at high temperature, which is the key factor on strength and ductility improvement. Meanwhile, EPT induces parts of gamma(") phase (precipitating during aged treatment) to precipitate around dislocation which impedes dislocation motion.
电子版国际标准刊号	1873-4936
WOS关键词	POSITRON-ANNIHILATION LIFETIME ; DELTA-PHASE ; COARSENING BEHAVIOR ; INCONEL-718 ALLOY ; FIELD TREATMENT ; NI ; FE ; STEEL ; PRECIPITATION ; SUPERALLOY
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000432640000047
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285932]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Song, X,Gai, ZY,Cao, XZ,et al. Improving mechanism of both strength and ductility of GH4169 alloy induced by electric-pulse treatment[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,724:439-443.
APA	Song, X.,Gai, ZY.,Cao, XZ.,曹兴忠.,An, JL.,...&Liu, Y.(2018).Improving mechanism of both strength and ductility of GH4169 alloy induced by electric-pulse treatment.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,724,439-443.
MLA	Song, X,et al."Improving mechanism of both strength and ductility of GH4169 alloy induced by electric-pulse treatment".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 724(2018):439-443.