High-precision Cu alloy microlattices with superior energy absorption capacity enabled by nanoprecipitation engineering

doi:10.1016/j.scriptamat.2023.115801

IMR OpenIR

	High-precision Cu alloy microlattices with superior energy absorption capacity enabled by nanoprecipitation engineering
	Wang, Liqiang 1; Qu, Shuo 2; Fu, Huangliu 4; Zhou, Xin 1; Ding, Junhao 2; Yang, Hui 5; Zhao, Qi 5; Song, Xu 2; Lu, Yang 3
通讯作者	Song, Xu(xsong@mae.cuhk.edu.hk) ; Lu, Yang(ylu1@hku.hk)
	2024-01-15
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	239 页码:7
摘要	Printing of thin -wall copper alloy components with high mechanical performance using selective laser melting remains challenging. Here, the introduction of the soft Cr nanoprecipitations via increasing the Cr to Nb atomic ratio based on commercial CuCrNb alloys can suppress the excessive formation of Cr2Nb Laves phase and enhance the deformability of CuCrNb microlattices. Small printing layer thickness contributed to the highdensity and small -size nanoprecipitations. Dual nanoprecipitations strategy enables us to successfully fabricate high -precision CuCrNb microlattices with the feature size down to 100 mu m and exceptional printability, high mechanical strength, and homogeneous deformability until densification strain. By tailoring the precipitation behavior of Cr phase at post -printing stage, CuCrNb microlattices can further enhance the mechanical performance. Our peak -aged Gyroid CuCrNb microlattice displays an ultrahigh specific energy absorption of 23 J/g without fracture at strain above 60 %, even surpassing that of some titanium and aluminum alloys lattice structures with low material densities.
关键词	Additive manufacturing Copper alloy Nanoprecipitation engineering Microlattices
资助者	Shenzhen-Hong Kong-Macau Science and Technology Program (Category C) ; Key R & D Programmes from the Science and Technology Department of Sichuan Province (Key Science & Technology Project) ; Changsha Municipal Science and Technology Bureau
DOI	10.1016/j.scriptamat.2023.115801
收录类别	SCI
语种	英语
资助项目	Shenzhen-Hong Kong-Macau Science and Technology Program (Category C)[SGDX2020110309300301] ; Key R & D Programmes from the Science and Technology Department of Sichuan Province (Key Science & Technology Project)[2022YFSY0001] ; Changsha Municipal Science and Technology Bureau[kh2201035]
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:001159399100001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184030
专题	中国科学院金属研究所
通讯作者	Song, Xu; Lu, Yang
作者单位	1.City Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China 2.Chinese Univ Hong Kong, Dept Mech & Automat Engn, Hong Kong, Peoples R China 3.Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 5.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Liqiang,Qu, Shuo,Fu, Huangliu,et al. High-precision Cu alloy microlattices with superior energy absorption capacity enabled by nanoprecipitation engineering[J]. SCRIPTA MATERIALIA,2024,239:7.
APA	Wang, Liqiang.,Qu, Shuo.,Fu, Huangliu.,Zhou, Xin.,Ding, Junhao.,...&Lu, Yang.(2024).High-precision Cu alloy microlattices with superior energy absorption capacity enabled by nanoprecipitation engineering.SCRIPTA MATERIALIA,239,7.
MLA	Wang, Liqiang,et al."High-precision Cu alloy microlattices with superior energy absorption capacity enabled by nanoprecipitation engineering".SCRIPTA MATERIALIA 239(2024):7.