Evolution of the temperature, microstructures and microsegregation in equiaxed solidification of Al-5 wt.% Cu alloy

IMR OpenIR

	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
发表期刊	INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
ISSN	1862-5282
卷号	108 期号:5 页码:364-377
摘要	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.; 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.
部门归属	[ma, xiaoping ; li, dianzhong] inst met sci & technol, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china
关键词	Solidification Microstructures Microsegregation Enriched Boundar0y Layer Discrete Crystal Growth
学科领域	Metallurgy & Metallurgical Engineering
资助者	Youth Innovation Promotion Association of Chinese Academy of Sciences; National Natural Science Foundation of China [U1508215]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78154
专题	中国科学院金属研究所
通讯作者	Ma, XP (reprint author), Inst Met Sci & Technol, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China.
推荐引用方式 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.