Strong and ductile bicontinuous Cu-RHEA composites formed by liquid metal dealloying

doi:10.1016/j.msea.2024.147222

IMR OpenIR

	Strong and ductile bicontinuous Cu-RHEA composites formed by liquid metal dealloying
	Shao, Jun-Chao; Xie, Hui; Jin, Hai-Jun
通讯作者	Shao, Jun-Chao(jcshao@imr.ac.cn)
	2024-11-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	915 页码:7
摘要	Inter-granular etching often leads to 'weakened grain boundaries', which deteriorate the ductility of (nano-) composites or porous materials fabricated by liquid metal dealloying (LMD). In this paper, we report that inter- granular etching can be suppressed by the addition of Zr in Ti-Ta precursor, while it is dealloyed in liquid Cu. This procedure removes grain-boundary-like defects in obtained bicontinuous Cu-Ta composites, and improve their ductility in tension. By replacing Ta with a refractory high entropy alloy (RHEA), i.e. MoNbTaVW, we also obtain high-quality bicontinuous Cu-RHEA composites with low density, high tensile strength and excellent ductility. The suppression of inter-granular etching, which is essential to the mechanical stability of LMDmade materials, might arise from the decrease of grain boundary energy of Ti-Ta precursor alloys induced by Zr addition. New materials developed in this study may enable novel applications by enlarging the property space and overcoming the poor malleability and machinability of conventional materials of this type (such as Cu-W composites).
关键词	Double-phase material Dealloying Refractory high entropy alloy Inter-granular etching Ductility
资助者	National Natural Science Foundation of China ; Shenyang National Laboratory for Materials Science, PR China
DOI	10.1016/j.msea.2024.147222
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52101204] ; Shenyang National Laboratory for Materials Science, PR China[L2020F39]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001311518100001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：1[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/321006/189896
专题	中国科学院金属研究所
通讯作者	Shao, Jun-Chao
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	Shao, Jun-Chao,Xie, Hui,Jin, Hai-Jun. Strong and ductile bicontinuous Cu-RHEA composites formed by liquid metal dealloying[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,915:7.
APA	Shao, Jun-Chao,Xie, Hui,&Jin, Hai-Jun.(2024).Strong and ductile bicontinuous Cu-RHEA composites formed by liquid metal dealloying.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,915,7.
MLA	Shao, Jun-Chao,et al."Strong and ductile bicontinuous Cu-RHEA composites formed by liquid metal dealloying".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 915(2024):7.