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Thermal analysis of microstructural evolution of Al2O3 surface modified layers | |
Ma W(马维); Ma W | |
Source Publication | Surface & Coatings Technology |
2010 | |
Volume | 204Issue:11Pages:1689-1696 |
ISSN | 0257-8972 |
Abstract | 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 |
URL | 查看原文 |
Indexed By | SCI |
Language | 英语 |
WOS ID | WOS:000275391200003 |
WOS Keyword | SOLID LIQUID INTERFACE ; PROCESSING CONDITIONS ; PARTICLES ; SOLIDIFICATION ; PRESSURE ; BEHAVIOR ; ALLOYS |
WOS Research Area | Materials Science ; Physics |
WOS Subject | Materials Science, Coatings & Films ; Physics, Applied |
Funding Organization | National Natural Sciences Foundation of China [10672166, 10632100] |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/43609 |
Collection | 水动力学与海洋工程重点实验室(2009-2011) |
Corresponding Author | Ma W |
Recommended Citation 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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