Grain Refinement at the Nanoscale Via Mechanical Twinning and Dislocation Interaction in a Nickel-Based Alloy

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	Grain Refinement at the Nanoscale Via Mechanical Twinning and Dislocation Interaction in a Nickel-Based Alloy
	Tao NR; Wu XL(武晓雷); Sui ML; Lu J; Lu K(卢柯)
刊名	Journal of Materials Research
	2004
通讯作者邮箱	lu@imr.ac.cn
卷号	19 期号:6 页码:1623-1629
ISSN号	0884-2914
通讯作者	Lu, K (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Met Res Inst, Shenyang 110016, Peoples R China.
中文摘要	A nanostructured surface layer was formed on an Inconel 600 plate by subjecting it to surface mechanical attrition treatment at room temperature. Transmission electron microscopy and high-resolution transmission electron microscopy of the treated surface layer were carried out to reveal the underlying grain refinement mechanism. Experimental observations showed that the strain-induced nanocrystallization in the current sample occurred via formation of mechanical microtwins and subsequent interaction of the microtwins with dislocations in the surface layer. The development of high-density dislocation arrays inside the twin-matrix lamellae provides precursors for grain boundaries that subdivide the nanometer-thick lamellae into equiaxed, nanometer-sized grains with random orientations.
学科主题	力学
类目[WOS]	Materials Science, Multidisciplinary
研究领域[WOS]	Materials Science
关键词[WOS]	SURFACE NANOCRYSTALLIZATION ; MICROSTRUCTURAL EVOLUTION ; DEFORMATION ; IRON ; ATTRITION
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000222316700006
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16327]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Tao NR,Wu XL,Sui ML,et al. Grain Refinement at the Nanoscale Via Mechanical Twinning and Dislocation Interaction in a Nickel-Based Alloy[J]. Journal of Materials Research,2004,19(6):1623-1629.
APA	Tao NR,武晓雷,Sui ML,Lu J,&卢柯.(2004).Grain Refinement at the Nanoscale Via Mechanical Twinning and Dislocation Interaction in a Nickel-Based Alloy.Journal of Materials Research,19(6),1623-1629.
MLA	Tao NR,et al."Grain Refinement at the Nanoscale Via Mechanical Twinning and Dislocation Interaction in a Nickel-Based Alloy".Journal of Materials Research 19.6(2004):1623-1629.