Thermally promoted evolution of open-volume defects and Cu precipitates in the deformed FeCu alloys

doi:10.1016/j.jnucmat.2018.01.061

	Thermally promoted evolution of open-volume defects and Cu precipitates in the deformed FeCu alloys
	Zhang, P; Wang, BY; 张鹏(正); Zhu T(朱特); Lian XY(连相宇); Cheng GD(成国栋); Cao XZ(曹兴忠); Jin SX(靳硕学); Cao, XZ; Jin, SX
刊名	JOURNAL OF NUCLEAR MATERIALS
	2018
卷号	501 页码:293-301
关键词	Cu-bearing steel Positron annihilation Cu precipitate Open-volume defects Deformation
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2018.01.061
文献子类	Article
英文摘要	We have studied the effect of isothermal annealing on the evolution of the open-volume defect and the Cu precipitate in deformed Fe0.15Cu, Fe0.3Cu and Fe0.6Cu alloys. Using the coincidence Doppler broadening, positron annihilation lifetime and the S-W couples, the evolution of local electronic circumstance around the annihilation sites, open-volume defects and interaction between open-volume defects and Cu precipitates were measured as a function of the isothermal annealing temperatures. Cold rolling deformation induced an obvious increment in S parameters due to the formation of open-volume defects. Annealing not only resulted in gradual recovery of open-volume defects and Cu thermal precipitation, but also promoted the combination and interaction between defects and Cu precipitates. The interaction between open-volume defects and Cu precipitates was revealed clearly by the view point of S-W relationship. The S-W interaction for the different CumVn complexes was also calculated theoretically by MIKA-Doppler, which supports our experimental observations qualitatively. The results indicate that open-volume defects were formed first after cold rolling, followed by the Cu precipitation and recovery of open-volume defects, Cu precipitates recovered at the end. It is interesting that the trajectory of (S, W) points with increasing annealing temperature formed a similar closed "Parallelogram" shape. It is benefit for revealing the behavior of Cu thermal precipitation and their evolution in various Cu-bearing steels under thermal treatment. In addition, we also investigated the Cu content effect on the Cu precipitation in FeCu alloys, and the Cu precipitate phenomenon was enhanced in higher Cu content alloys. (C) 2018 Elsevier B.V. All rights reserved.
电子版国际标准刊号	1873-4820
WOS关键词	POSITRON-ANNIHILATION ; VACANCY CLUSTERS ; MODEL ALLOYS ; DISLOCATIONS ; STEEL ; IRON ; NI ; TRANSFORMATION ; IRRADIATION ; COMPLEXES
WOS研究方向	Materials Science ; Nuclear Science & Technology
语种	英语
WOS记录号	WOS:000426416000027
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285700]
专题	高能物理研究所_多学科研究中心
通讯作者	Cao XZ(曹兴忠)
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	Zhang, P,Wang, BY,Zhang P,et al. Thermally promoted evolution of open-volume defects and Cu precipitates in the deformed FeCu alloys[J]. JOURNAL OF NUCLEAR MATERIALS,2018,501:293-301.
APA	Zhang, P.,Wang, BY.,张鹏.,朱特.,连相宇.,...&Cheng, GD.(2018).Thermally promoted evolution of open-volume defects and Cu precipitates in the deformed FeCu alloys.JOURNAL OF NUCLEAR MATERIALS,501,293-301.
MLA	Zhang, P,et al."Thermally promoted evolution of open-volume defects and Cu precipitates in the deformed FeCu alloys".JOURNAL OF NUCLEAR MATERIALS 501(2018):293-301.