The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy

doi:10.1016/j.msea.2016.10.037

	The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy
	Wang BY(王宝义); He, LZ; Cao, XZ; Zhang, P; Cao, YH; Wang, BY; Zhou, YZ; Wang, P; Cui, JZ; Cao XZ(曹兴忠)
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2017
卷号	679 页码:417-427
关键词	Magnetic field Ultrafine grained 1050 alloy Annealing Yield strength Dislocation Vacancy cluster
ISSN号	0921-5093
DOI	10.1016/j.msea.2016.10.037
文献子类	Article
英文摘要	The evolutions of tensile properties and microstructures of ultrafine grained (UFG) 1050 aluminum alloy after annealing at 90-210 degrees C for 4 h without and with 12 T high magnetic field were investigated by tensile test, electron back scattering diffraction pattern (EBSD), transmission electron microscopy (TEM) and positron annihilation lifetime spectroscopy (PALS). When annealing temperature increases from 90 degrees C to 150 degrees C, the yield strength (YS) of UFG 1050 aluminum alloy increases, it is because that the increase in the density of vacancy clusters due to the activated monovacancies and the high angle boundaries (HABs) having more stable structures, both of them can act as effective barriers to dislocation motion during tensile deformation. When annealing at 210 degrees C, the YS of UFG 1050 aluminum alloy deceases, it is because that the decrease in the vacancy clusters density due to the thermally activated the vacancy clusters annihilating at sinks and the dislocation density decreases. The YS of magnetic annealed samples are lower at 90 degrees C and 150 degrees C due to the lower density of dislocations and vacancy clusters. The difference of YS between samples annealed without and with magnetic field disappears at 210 degrees C due to the sharply reduced strain hardening stage.
电子版国际标准刊号	1873-4936
WOS关键词	POSITRON LIFETIME SPECTROSCOPY ; GRAIN-BOUNDARY SEGREGATION ; SEVERE PLASTIC-DEFORMATION ; MEDIUM-CARBON STEEL ; NANOSTRUCTURED METALS ; AL-MG ; AUSTENITIC DECOMPOSITION ; MECHANICAL-PROPERTIES ; PURE TI ; FIELD
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000389087000045
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285115]
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	Wang BY,He, LZ,Cao, XZ,et al. The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,679:417-427.
APA	王宝义.,He, LZ.,Cao, XZ.,Zhang, P.,Cao, YH.,...&张鹏.(2017).The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,679,417-427.
MLA	王宝义,et al."The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 679(2017):417-427.