Thermal analysis of microstructural evolution of Al2O3 surface modified layers

doi:10.1016/j.surfcoat.2009.10.036

IMECH-IR > 水动力学与海洋工程重点实验室(2009-2011)

	Thermal analysis of microstructural evolution of Al2O3 surface modified layers
	Ma W(马维); Ma W
发表期刊	Surface & Coatings Technology
	2010
卷号	204 期号:11 页码:1689-1696
ISSN	0257-8972
摘要	Solidification behavior and microstructural evolution of surface modified layers in plasma cladding technique are studied via numerical simulations. Both the coupling effect of temperature and solid volume fraction are considered in the proposed thermal analytical model, by which the transient temperature distributions are calculated and the shape of melting pool is determined. Furthermore, we perform microscopic thermal analysis on the nucleation and growth behaviors of ceramic hardening phases and dendrites, as well as the kinetics of related two-phase flow systems. By comparing with experimental observations, the evolution mechanisms of the morphology of Al2O3 ceramic hardening layer are explained. Based on the above results, a relationship among the scanning velocity of plasma stream, dendritic growth rate and the advancing speed of solid/liquid interface is found, and an energy criterion is proposed for predicting the pushing/engulfing transition of ceramic particles by grain growth fronts. (C) 2009 Elsevier B.V. All rights reserved.
DOI	10.1016/j.surfcoat.2009.10.036
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收录类别	SCI
语种	英语
WOS记录号	WOS:000275391200003
关键词[WOS]	SOLID LIQUID INTERFACE ; PROCESSING CONDITIONS ; PARTICLES ; SOLIDIFICATION ; PRESSURE ; BEHAVIOR ; ALLOYS
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
项目资助者	National Natural Sciences Foundation of China [10672166, 10632100]
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/43609
专题	水动力学与海洋工程重点实验室(2009-2011)
通讯作者	Ma W
推荐引用方式 GB/T 7714	Ma W,Ma W. Thermal analysis of microstructural evolution of Al2O3 surface modified layers[J]. Surface & Coatings Technology,2010,204,11,:1689-1696.
APA	马维,&Ma W.(2010).Thermal analysis of microstructural evolution of Al2O3 surface modified layers.Surface & Coatings Technology,204(11),1689-1696.
MLA	马维,et al."Thermal analysis of microstructural evolution of Al2O3 surface modified layers".Surface & Coatings Technology 204.11(2010):1689-1696.

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