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
Source PublicationSurface & Coatings Technology
2010
Volume204Issue:11Pages:1689-1696
ISSN0257-8972
AbstractSolidification 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.
DOI10.1016/j.surfcoat.2009.10.036
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Indexed BySCI
Language英语
WOS IDWOS:000275391200003
WOS KeywordSOLID LIQUID INTERFACE ; PROCESSING CONDITIONS ; PARTICLES ; SOLIDIFICATION ; PRESSURE ; BEHAVIOR ; ALLOYS
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Coatings & Films ; Physics, Applied
Funding OrganizationNational Natural Sciences Foundation of China [10672166, 10632100]
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Document Type期刊论文
Identifierhttp://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 AuthorMa 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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