Multi-scale macrosegregation patterns due to the ripple superimposition: Characterization, mechanism and control

doi:10.1016/j.matdes.2019.107765

CORC > 金属研究所 > 中国科学院金属研究所

	Multi-scale macrosegregation patterns due to the ripple superimposition: Characterization, mechanism and control
	Ma, Xiaoping; Li, Dianzhong
刊名	MATERIALS & DESIGN
	2019-06-15
卷号	172 页码:11
关键词	Solidification Multi-scale segregation Dendrite Ripple superimposition
ISSN号	0264-1275
DOI	10.1016/j.matdes.2019.107765
通讯作者	Ma, Xiaoping(xpma@imr.ac.cn)
英文摘要	The segregation produced during solidification usually deteriorates properties of materials. In this paper, the multi-scale segregation patterns of Al-5wt% Cu alloy were investigated by various etching methods and measure tools. The multi-scale segregation patterns were simulated by the MATLAB software. Through investigation, the research entities for segregations were re-regulated. The entity for microsegregation is so tiny that it is usually concealed by back diffusion. The multi-scale macrosegregation patterns, including the typical dendritic pattern and triangle pattern, are reserved after solidification. After the propagation of the fine porous medium, ripples of solid fraction arise and superimpose in the fine porous medium. The superimposition of ripples with different directions, intensities and periods produces complicate multi-scale macrosegregation patterns. Based on the new mechanism, the multi-scale macrosegregation was controlled by a feasible quenching-holding-quenching route. This work re-regulates the research entities for microsegregation and macrosegregation, and establishes the superimposition principle of ripples. The ripple superimposition provides a promising vision to fabricate designed microstructures in the future. (c) 2019 The Authors. Published by Elsevier Ltd.
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000464348300010
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132743]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ma, Xiaoping
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma, Xiaoping,Li, Dianzhong. Multi-scale macrosegregation patterns due to the ripple superimposition: Characterization, mechanism and control[J]. MATERIALS & DESIGN,2019,172:11.
APA	Ma, Xiaoping,&Li, Dianzhong.(2019).Multi-scale macrosegregation patterns due to the ripple superimposition: Characterization, mechanism and control.MATERIALS & DESIGN,172,11.
MLA	Ma, Xiaoping,et al."Multi-scale macrosegregation patterns due to the ripple superimposition: Characterization, mechanism and control".MATERIALS & DESIGN 172(2019):11.