Ultrafine-grained microstructure in a Cu-Zn alloy produced by electropulsing treatment

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	Ultrafine-grained microstructure in a Cu-Zn alloy produced by electropulsing treatment; Ultrafine-grained microstructure in a Cu-Zn alloy produced by electropulsing treatment
	Y. Z. Zhou; W. Zhang; B. Q. Wang; J. D. Guo
	2003 ; 2003
发表期刊	Journal of Materials Research ; Journal of Materials Research
ISSN	0884-2914 ; 0884-2914
卷号	18 期号:8 页码:1991-1997
摘要	High-current-density electropulsing was applied to a coarse-grained Cu-Zn alloy with two phases of alpha-phase and beta'-phase. It was found that with an electropulsing treatment, ultrafine-grained (UFG) microstructure could be formed in the a-phase, but could not be formed in the beta'-phase. The results indicated that the formation of UFG microstructure was dependent on solid-state phase transformation. The main reason for the formation of UFG microstructure by electropulsing treatment resulted from the effect of a decrease in thermodynamic barrier and enhancement of nucleation rate in a current-carrying system, but not from the high heating and cooling rate during electropulsing treatment. The bulk UFG samples prepared by electropulsing treatment were free of porosity and contamination and had no large microstrain. It was reasonable to anticipate that a new method might be developed to produce ideal bulk UFG samples directly from the conventional coarse-grained materials by application of electropulsing.; High-current-density electropulsing was applied to a coarse-grained Cu-Zn alloy with two phases of alpha-phase and beta'-phase. It was found that with an electropulsing treatment, ultrafine-grained (UFG) microstructure could be formed in the a-phase, but could not be formed in the beta'-phase. The results indicated that the formation of UFG microstructure was dependent on solid-state phase transformation. The main reason for the formation of UFG microstructure by electropulsing treatment resulted from the effect of a decrease in thermodynamic barrier and enhancement of nucleation rate in a current-carrying system, but not from the high heating and cooling rate during electropulsing treatment. The bulk UFG samples prepared by electropulsing treatment were free of porosity and contamination and had no large microstrain. It was reasonable to anticipate that a new method might be developed to produce ideal bulk UFG samples directly from the conventional coarse-grained materials by application of electropulsing.
部门归属	chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;guo, jd (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; chinese acad sci, met res inst, shenyang natl lab mat sci, shenyang 110016, peoples r china.;guo, jd (reprint author), chinese acad sci, met res inst, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Current-carrying Conductors Current-carrying Conductors Low-carbon Steel Low-carbon Steel Nanocrystalline Nanocrystalline Materials Materials Electric-current Electric-current Metals Metals Thermodynamics Thermodynamics Nucleation Nucleation 1045-steel 1045-steel
URL	查看原文 ; 查看原文
WOS记录号	WOS:000184611200038 ; WOS:000184611200038
引用统计	被引频次：37[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36219
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Z. Zhou,W. Zhang,B. Q. Wang,et al. Ultrafine-grained microstructure in a Cu-Zn alloy produced by electropulsing treatment, Ultrafine-grained microstructure in a Cu-Zn alloy produced by electropulsing treatment[J]. Journal of Materials Research, Journal of Materials Research,2003, 2003,18, 18(8):1991-1997, 1991-1997.
APA	Y. Z. Zhou,W. Zhang,B. Q. Wang,&J. D. Guo.(2003).Ultrafine-grained microstructure in a Cu-Zn alloy produced by electropulsing treatment.Journal of Materials Research,18(8),1991-1997.
MLA	Y. Z. Zhou,et al."Ultrafine-grained microstructure in a Cu-Zn alloy produced by electropulsing treatment".Journal of Materials Research 18.8(2003):1991-1997.