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	Improving mechanism of both strength and ductility of gh4169 alloy induced by electric-pulse treatment
	An, Jinlan1; Wang, Lei1; Song, Xiu1; Liu, Yang1; Gai, Zeyu1; Cao, Xingzhong2
刊名	Materials science and engineering a-structural materials properties microstructure and processing
	2018-05-02
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
通讯作者	Wang, lei(wanglei@mail.neu.edu.cn)
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.
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
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000432640000047
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2177525
专题	高能物理研究所
通讯作者	Wang, Lei
作者单位	1.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	An, Jinlan,Wang, Lei,Song, Xiu,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	An, Jinlan,Wang, Lei,Song, Xiu,Liu, Yang,Gai, Zeyu,&Cao, Xingzhong.(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	An, Jinlan,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.

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