Nanostructure formation mechanism of alpha-titanium using SMAT

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	Nanostructure formation mechanism of alpha-titanium using SMAT
	K. Y. Zhu; A. Vassel; F. Brisset; K. Lu; J. Lu
	2004
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	52 期号:14 页码:4101-4110
摘要	A nanostructured surface layer up to 50 mum thick was produced on commercially pure titanium using surface mechanical attrition treatment (SMAT). The microstructural features of the surface layer produced by SMAT were systematically characterized by cross-sectional optical microscopy observations, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) investigations. The grain refinement process, accompanied by an increase in strain in the surface layer, involves: (1) the onset of twins and the intersection of twin systems, (2) the formation of dislocation walls, (3) the nucleation of microbands associated with the splitting of dislocation walls, (4) the subdivision of microbands into low angle disoriented blocks and then highly disoriented polygonal submicronic grains, and (5) further breakdown of submicronic polygonal grains into randomly oriented nanograins. The final grain refinement step to form nanograins has been discussed on the basis of a recrystallization process. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	univ technol troyes, cnrs, fre 2719, lasmis, troyes, france. off natl etud & rech aerosp, mat syst & composites dept, f-92322 chatillon, france. off natl etud & rech aerosp, cnrs, lem, f-92322 chatillon, france. chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;lu, j (reprint author), univ technol troyes, cnrs, fre 2719, lasmis, 12 rue marie curie,bop 2060-10010, troyes, france;lu@utt.fr
关键词	Nanostructure Recrystallization Alpha-titanium Smat Severe Plastic-deformation Surface Nanocrystallization Attrition Treatment Grain-refinement Pure Titanium Strain-rate Hcp Metals Microstructure Alloys Dependence
URL	查看原文
WOS记录号	WOS:000223389800004
引用统计	被引频次：455[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/321006/35778
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. Y. Zhu,A. Vassel,F. Brisset,et al. Nanostructure formation mechanism of alpha-titanium using SMAT[J]. Acta Materialia,2004,52(14):4101-4110.
APA	K. Y. Zhu,A. Vassel,F. Brisset,K. Lu,&J. Lu.(2004).Nanostructure formation mechanism of alpha-titanium using SMAT.Acta Materialia,52(14),4101-4110.
MLA	K. Y. Zhu,et al."Nanostructure formation mechanism of alpha-titanium using SMAT".Acta Materialia 52.14(2004):4101-4110.