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RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS
Xie Yu1; Zhang Yan2; Chen Rongshi1; Han Enhou1
Corresponding AuthorChen Rongshi(rongshichen@yahoo.com)
2009-11-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume45Issue:11Pages:1396-1401
AbstractCasting Mg-Al-Zn alloys are promising for the automotive components loaded under both high strength and high ductility, as well as under high temperatures. The relationship of compositions, phase constituents and solidification paths of casting Mg-Al-Zn alloys were investigated by SEM/EDS, XRD and thermodynamic calculations. It is shown that the phase constituents of Mg-Al-Zn alloys are related to Zn/Al ratio; with the Zn/Al ratio increasing, the secondary phase gamma-Mg(17)Al(12). It is gradually replaced by phi-Mg(21)(Zn, Al)(17) and eventually disappears completely. The phase constituents and solidification paths of the alloys under various conditions, including equilibrium, Scheil and permanent mould casting, were examined by thermodynamic calculation software Pandat with the availability of thermodynamic description of Mg-Al-Zn ternary system. The practical casting process deviates from the equilibrium; however, the practical phase constituents of the experimental alloys except ZA65 can be predicted by the Scheil model. Because of no considering the peritectic reaction in which solid participates as reactant, the Scheil model can not correctly predict the phase constituents of ZA65 alloy under permanent mould casting condition.
KeywordMg-Al-Zn alloy phase equilibrium thermodynamics microstructure solidification path
Funding OrganizationNational Natural Science Foundation of China ; National Key Basic Research and Development Program of China
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50574086] ; National Key Basic Research and Development Program of China[2007CB613704]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000272502600019
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/98446
Collection中国科学院金属研究所
Corresponding AuthorChen Rongshi
Affiliation1.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
2.59 Inst China Ordnance Ind, Chongqing 400039, Peoples R China
Recommended Citation
GB/T 7714
Xie Yu,Zhang Yan,Chen Rongshi,et al. RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS[J]. ACTA METALLURGICA SINICA,2009,45(11):1396-1401.
APA Xie Yu,Zhang Yan,Chen Rongshi,&Han Enhou.(2009).RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS.ACTA METALLURGICA SINICA,45(11),1396-1401.
MLA Xie Yu,et al."RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS".ACTA METALLURGICA SINICA 45.11(2009):1396-1401.
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