Microstructure evolution in metals induced by high density electric current pulses

IMR OpenIR

	Microstructure evolution in metals induced by high density electric current pulses
	Guo, J. D.; Wang, X. L.; Dai, W. B.; jdguo@imr.ac.cn
	2015
发表期刊	MATERIALS SCIENCE AND TECHNOLOGY
ISSN	0267-0836
卷号	31 期号:13A 页码:1545-1554
摘要	In this paper, microstructure evolution in metals induced by high density electric current pulses (ECPs) treatment, such as grain refinement, formation of oriented microstructure and redistribution of inclusions, is carefully reviewed. The mechanism for these microstructure evolutions is discussed. It is suggested that there are usually several factors working during ECP: Joule heating (including temperature rise, the heating rate and the cooling rate), stress (including thermal compressive stress, skin effect, electron wind force) and free energy change caused by the current. The Joule heat and the stress usually affect the dynamics, enhance the microstructure evolutions rate, while the free energy change affects the thermodynamics and lowers the barrier of the phase transformation or recrystallisation. The experimental results indicate that high current density ECP provides an effective approach to refine the microstructure of polycrystalline materials and to improve the mechanical properties of the materials.
部门归属	[guo, j. d.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [wang, x. l.] northeastern univ, res inst, shenyang 110819, peoples r china ; [dai, w. b.] northeastern univ, sch met & mat, shenyang 110819, peoples r china
关键词	Electric Current Pulses Phase Transformation Recrystallisation Orientation Inclusion
资助者	National Nature Science Foundation of China [51171191, 51471047, 51304039]; Fundamental Research Funds for the Central Universities [N130418001, N130402021]
收录类别	sci
语种	英语
WOS记录号	WOS:000361794400006
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/321006/74987
专题	中国科学院金属研究所
通讯作者	jdguo@imr.ac.cn
推荐引用方式 GB/T 7714	Guo, J. D.,Wang, X. L.,Dai, W. B.,et al. Microstructure evolution in metals induced by high density electric current pulses[J]. MATERIALS SCIENCE AND TECHNOLOGY,2015,31(13A):1545-1554.
APA	Guo, J. D.,Wang, X. L.,Dai, W. B.,&jdguo@imr.ac.cn.(2015).Microstructure evolution in metals induced by high density electric current pulses.MATERIALS SCIENCE AND TECHNOLOGY,31(13A),1545-1554.
MLA	Guo, J. D.,et al."Microstructure evolution in metals induced by high density electric current pulses".MATERIALS SCIENCE AND TECHNOLOGY 31.13A(2015):1545-1554.