Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite
Zhang Suqing; Chen Tijun; Cheng Faliang; Li Leiliang
2016
Source PublicationTransactions of Nonferrous Metals Society of China
ISSN1003-6326
Volume26Issue:6Pages:1564-1573
AbstractThe microstructural evolution and phase transformations during partial remelting of in-situ Mg_2Si_p/AM60B composite modified by SiC and Sr were investigated. The results indicate that SiC and Sr are effective for refining primary alpha-Mg grains and Mg_2Si particles. After being partially remelted, a semisolid microstructure with small and spheroidal primary alpha-Mg particles can be obtained. The microstructural evolution during partial remelting can be divided into four stages: the initial rapid coarsening, structural separation, spheroidization and final coarsening, which are essentially caused by the phase transformations of betaalpha, alpha+betaL and alphaL, alphaL, and alphaL and Lalpha, respectively. The Mg_2Si particles have not obvious effect on the general microstructural evolution steps, but can slower the evolution progress and change the coarsening mechanism. During partial remelting, Mg_2Si particles first become blunt and then become spheroidal because of melting of their edges and corners, and finally are coarsened owing to Ostwald ripening.
Keywordmagnesium alloy partial remelting thixoforming microstructure evolution phase transformation in-situ composite
Indexed ByCSCD
Language英语
WOS Research AreaEngineering
WOS SubjectENGINEERING INDUSTRIAL
CSCD IDCSCD:5753016
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/71669
Collection材料科学与工程学院
AffiliationLanzhou University of Technology, State Key laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou, Gansu 730050, China
First Author AffilicationLanzhou University of Technology
First Signature AffilicationLanzhou University of Technology
Recommended Citation
GB/T 7714
Zhang Suqing,Chen Tijun,Cheng Faliang,et al. Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite[J]. Transactions of Nonferrous Metals Society of China,2016,26(6):1564-1573.
APA Zhang Suqing,Chen Tijun,Cheng Faliang,&Li Leiliang.(2016).Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite.Transactions of Nonferrous Metals Society of China,26(6),1564-1573.
MLA Zhang Suqing,et al."Microstructural evolution and phase transformation during partial remelting of in-situ Mg_2Si_p/AM60B composite".Transactions of Nonferrous Metals Society of China 26.6(2016):1564-1573.
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