MICROSTRUCTURE EVOLUTION AND GROWTH BEHAVIORS OF FACETED PHASE IN DIRECTIONALLY SOLIDIFIED Al-Y ALLOYS II. Microstructure Evolution of Directionally Solidified Al-53%Y Peritectic Alloy

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	MICROSTRUCTURE EVOLUTION AND GROWTH BEHAVIORS OF FACETED PHASE IN DIRECTIONALLY SOLIDIFIED Al-Y ALLOYS II. Microstructure Evolution of Directionally Solidified Al-53%Y Peritectic Alloy
其他题名	MICROSTRUCTURE EVOLUTION AND GROWTH BEHAVIORS OF FACETED PHASE IN DIRECTIONALLY SOLIDIFIED Al-Y ALLOYS II. Microstructure Evolution of Directionally Solidified Al-53%YPeritectic Alloy
	Liu Tong 1; Luo Liangshun 1; Zhang Yanning 2; Su Yanqing 1; Guo Jingjie 1; Fu Hengzhi 1
	2016
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	52 期号:7 页码:866-874
摘要	Peritectic reaction is frequently encountered in many technologically important materials (e.g., steels, brass, bronze, intermetallic compounds, magnetic materials and YBa2Cu3Ox superconductors). Many interesting microstructures have been found during directional solidification of peritectic alloys, which have drawn much attention since last decade. In this work, in order to investigate the growth behavior of Al3Y phase as a peritectic phase, directioanal solidification experiments at different pulling rates have been performed on Al-53%Y (mass fraction) peritectic alloy. The results show that the primary phase and the peritectic phase both grow continuously, the microstructure, which is parallel to the solid-liquid interface has been found and explained at a low pulling rate (V= 1 mu m/s). With the growth distance increase, the precipitating solid phase from the liquid at the quenching solid-liquid interface transforms from primary Al2Y phase to peritectic Al3Y phase. The interface consists of coarse Al3Y phase without Al2Y phase. At relatively high pulling rates, the morphologies of primary Al2Y phase transit from continuous growth to cellular phase, and further to dendrites with the pulling rate increase. The results also show that the primary phase is enclosed with the serrate peritectic phase, and Al3Y phase precipitates from the liquid in needle shape at the same time. With the growth distance further increase, Al3Y phase become thicker and more numerous. In addition, the Al3Y phase precipitated from liquid transit from needle shape to short rod and lump shape, which distributes around the peritectic structure.
关键词	STRUCTURE FORMATION MECHANISM IN-SITU OBSERVATION COUPLED GROWTH SELECTION SYSTEMS Al-Y peritectic alloy directional solidification intermetallics compound faceted growth
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:5741688
引用统计	被引频次：3[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/146289
专题	中国科学院金属研究所
作者单位	1.Harbin Institute Technol, Natl Key Lab Precis Hot Proc Met, Harbin 150001, Peoples R China 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Liu Tong,Luo Liangshun,Zhang Yanning,et al. MICROSTRUCTURE EVOLUTION AND GROWTH BEHAVIORS OF FACETED PHASE IN DIRECTIONALLY SOLIDIFIED Al-Y ALLOYS II. Microstructure Evolution of Directionally Solidified Al-53%Y Peritectic Alloy[J]. ACTA METALLURGICA SINICA,2016,52(7):866-874.
APA	Liu Tong,Luo Liangshun,Zhang Yanning,Su Yanqing,Guo Jingjie,&Fu Hengzhi.(2016).MICROSTRUCTURE EVOLUTION AND GROWTH BEHAVIORS OF FACETED PHASE IN DIRECTIONALLY SOLIDIFIED Al-Y ALLOYS II. Microstructure Evolution of Directionally Solidified Al-53%Y Peritectic Alloy.ACTA METALLURGICA SINICA,52(7),866-874.
MLA	Liu Tong,et al."MICROSTRUCTURE EVOLUTION AND GROWTH BEHAVIORS OF FACETED PHASE IN DIRECTIONALLY SOLIDIFIED Al-Y ALLOYS II. Microstructure Evolution of Directionally Solidified Al-53%Y Peritectic Alloy".ACTA METALLURGICA SINICA 52.7(2016):866-874.