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Evolution of the temperature, microstructures and microsegregation in equiaxed solidification of Al-5 wt.% Cu alloy
Ma, Xiaoping; Li, Dianzhong; Ma, XP (reprint author), Inst Met Sci & Technol, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China.
2017-05-01
Source PublicationINTERNATIONAL JOURNAL OF MATERIALS RESEARCH
ISSN1862-5282
Volume108Issue:5Pages:364-377
AbstractIn this study, the evolutions of the microstructures and microsegregation are related to the cooling curve in equiaxed dendritic solidification of the Al-5 wt.% Cu alloy. In addition to regular branching of dendritic arms, leaf venation branching, free branching and radial branching were also observed. With the extension of the dendritic zone, both the composition of the extra-dendritic melt and average composition of the dendritic zone change. The microsegregation mechanism in the dendritic zone deviates from the modified Scheil model. The microsegregation data suggest that the single dendritic arm is a porous structure containing the trapped boundary layer. As the temperature decreased after the isothermal periods, some original dendritic arms and interdendritic melt converged to form a new dendritic arm.; In this study, the evolutions of the microstructures and microsegregation are related to the cooling curve in equiaxed dendritic solidification of the Al-5 wt.% Cu alloy. In addition to regular branching of dendritic arms, leaf venation branching, free branching and radial branching were also observed. With the extension of the dendritic zone, both the composition of the extra-dendritic melt and average composition of the dendritic zone change. The microsegregation mechanism in the dendritic zone deviates from the modified Scheil model. The microsegregation data suggest that the single dendritic arm is a porous structure containing the trapped boundary layer. As the temperature decreased after the isothermal periods, some original dendritic arms and interdendritic melt converged to form a new dendritic arm.
description.department[ma, xiaoping ; li, dianzhong] inst met sci & technol, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china
KeywordSolidification Microstructures Microsegregation Enriched Boundar0y Layer Discrete Crystal Growth
Subject AreaMetallurgy & Metallurgical Engineering
Funding OrganizationYouth Innovation Promotion Association of Chinese Academy of Sciences; National Natural Science Foundation of China [U1508215]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78154
Collection中国科学院金属研究所
Corresponding AuthorMa, XP (reprint author), Inst Met Sci & Technol, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Ma, Xiaoping,Li, Dianzhong,Ma, XP . Evolution of the temperature, microstructures and microsegregation in equiaxed solidification of Al-5 wt.% Cu alloy[J]. INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,2017,108(5):364-377.
APA Ma, Xiaoping,Li, Dianzhong,&Ma, XP .(2017).Evolution of the temperature, microstructures and microsegregation in equiaxed solidification of Al-5 wt.% Cu alloy.INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,108(5),364-377.
MLA Ma, Xiaoping,et al."Evolution of the temperature, microstructures and microsegregation in equiaxed solidification of Al-5 wt.% Cu alloy".INTERNATIONAL JOURNAL OF MATERIALS RESEARCH 108.5(2017):364-377.
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