Microstructure Formation Mechanism During a Novel Semisolid Rheo-rolling Process of AZ91 Magnesium Alloy

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	Microstructure Formation Mechanism During a Novel Semisolid Rheo-rolling Process of AZ91 Magnesium Alloy
其他题名	Microstructure Formation Mechanism During a Novel Semisolid Rheo-rolling Process of AZ91 Magnesium Alloy
	Zhao Zhanyong; Guan Renguo; Wang Xiang; Liu Chunming
	2013
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	26 期号:4 页码:447-454
摘要	A novel semisolid rheo-rolling process of AZ91 alloy was proposed. The microstructure formation mechanism of AZ91 magnesium alloy during the process was studied. The results reveal that the eruptive nucleation and the heterogeneous nucleation exist. During the grain growth process, the grain breakage took place and transformed into fine spherical or rosette grains on the sloping plate gradually, the other grain growth style is direct globular growth. Due to the secondary crystallization of the remnant liquids in the roll gap, the microstructure of the strip becomes finer with the increment of the casting temperature from 650 degrees C to 690 degrees C. But when the casting temperature reached 710 degrees C, a part of the liquid alloy transformed into the eutectic phases, and the primary grains ripened to form coarse dendrites. In the casting temperature range from 650 degrees C to 690 degrees C, AZ91 alloy strip with fine spherical or rosette grains was prepared by the proposed process.
其他摘要	A novel semisolid rheo-rolling process of AZ91 alloy was proposed. The microstructure formation mechanism of AZ91 magnesium alloy during the process was studied. The results reveal that the eruptive nucleation and the heterogeneous nucleation exist. During the grain growth process, the grain breakage took place and transformed into fine spherical or rosette grains on the sloping plate gradually, the other grain growth style is direct globular growth. Due to the secondary crystallization of the remnant liquids in the roll gap, the microstructure of the strip becomes finer with the increment of the casting temperature from 650℃ to 690℃. But when the casting temperature reached 710℃, a part of the liquid alloy transformed into the eutectic phases, and the primary grains ripened to form coarse dendrites. In the casting temperature range from 650℃ to 690℃, AZ91 alloy strip with fine spherical or rosette grains was prepared by the proposed process.
关键词	SLOPING PLATE PROCESS SOLIDIFICATION BEHAVIORS EVOLUTION TEXTURE EXTRUSION AL Semisolid Rolling AZ91 alloy Microstructure
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation for Outstanding Young Scholars of China] ; [National Natural Science Foundation of China] ; [Fok Ying Tong Education Foundation] ; [Basic Scientific Research Operation of Center University] ; [Chinese National Program for Fundamental Research and Development]
CSCD记录号	CSCD:4896504
引用统计	被引频次：6[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155540
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Zhao Zhanyong,Guan Renguo,Wang Xiang,et al. Microstructure Formation Mechanism During a Novel Semisolid Rheo-rolling Process of AZ91 Magnesium Alloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2013,26(4):447-454.
APA	Zhao Zhanyong,Guan Renguo,Wang Xiang,&Liu Chunming.(2013).Microstructure Formation Mechanism During a Novel Semisolid Rheo-rolling Process of AZ91 Magnesium Alloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,26(4),447-454.
MLA	Zhao Zhanyong,et al."Microstructure Formation Mechanism During a Novel Semisolid Rheo-rolling Process of AZ91 Magnesium Alloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS 26.4(2013):447-454.