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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
Source PublicationMATERIALS SCIENCE AND TECHNOLOGY
ISSN0267-0836
Volume31Issue:13APages:1545-1554
AbstractIn 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.
description.department[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
KeywordElectric Current Pulses Phase Transformation Recrystallisation Orientation Inclusion
Funding OrganizationNational Nature Science Foundation of China [51171191, 51471047, 51304039]; Fundamental Research Funds for the Central Universities [N130418001, N130402021]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74987
Collection中国科学院金属研究所
Corresponding Authorjdguo@imr.ac.cn
Recommended Citation
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.
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