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

doi:10.1016/j.matdes.2019.107765

IMR OpenIR

	Multi-scale macrosegregation patterns due to the ripple superimposition: Characterization, mechanism and control
	Ma, Xiaoping; Li, Dianzhong
通讯作者	Ma, Xiaoping(xpma@imr.ac.cn)
	2019-06-15
发表期刊	MATERIALS & DESIGN
ISSN	0264-1275
卷号	172 页码:11
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.
关键词	Solidification Multi-scale segregation Dendrite Ripple superimposition
DOI	10.1016/j.matdes.2019.107765
收录类别	SCI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000464348300010
出版者	ELSEVIER SCI LTD
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132744
专题	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.