Towards high-strength cold spray additive manufactured metals:Methods,mechanisms,and properties  

作　　者：Shuo Yin Ningsong Fan Chunjie Huang Yingchun Xie Chao Zhang Rocco Lupoi Wenya Li 

机构地区：[1]Department of Mechanical,Manufacturing&Biomedical Engineering,Parsons Building,Trinity College Dublin,The University of Dublin,Dublin 2,Ireland [2]Institute of Materials Technology,Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg,Hamburg 22043,Germany [3]The Key Lab of Guangdong for Modern Surface Engineering Technology,National Engineering Laboratory for Modern Materials Surface Engineering Technology,Institute of New Materials,Guangdong Academy of Sciences,Guangzhou 510651,China [4]College of Mechanical Engineering,Yangzhou University,Yangzhou 225127,China [5]State Key Laboratory of Solidification Processing,Shaanxi Key Laboratory of Friction Welding Technologies,Northwestern Polytechnical University,Xi’an 720072,China

出　　处：《Journal of Materials Science & Technology》2024年第3期47-64,共18页材料科学技术（英文版）

基　　金：the financial support from the following funding agency and projects:Science Foundation Ireland Frontiers for the Future Project(No.20/FFP-P/8815);National Natural Science Foundation of China(Nos.51875471,52001078,and 52061135101);China Scholarship Council-Trinity College Dublin Joint Scholarship Programme(No.201906460020);International Cooperation Project of Guangdong Province(No.2021A0505030052);Alexander von Humboldt Foundation.

摘　　要：Cold spray,as a solid-state additive manufacturing process,has been attracting increasing attention from both scientific and industrial communities.However,cold-sprayed deposits generally have unfavorable mechanical properties in their as-fabricated state compared to conventionally manufactured and fusion-based additive-manufactured counterparts due to the inherent microstructural defects in the deposits(e.g.,porosity and incomplete interparticle bonding).This downside reduces its competitiveness and limits its wide applications as an additive manufacturing process.In the past years,many strengthening technologies have been developed or introduced to adjust the microstructure and improve the mechanical properties of cold-sprayed deposits.The term“strengthening”in this work specifically refers to improving the mechanical strength,particularly the tensile strength of the cold-sprayed bulk deposits.According to the stage that the strengthening technologies are used in the cold spray process,they can be classified into three categories:pre-process(e.g.,powder heat treatment),in-process(e.g.,powder heating,in-situ micro-forging,laser-assisted cold spray),and post-process(e.g.,post heat treatment,hot isostatic pressing,hot rolling,friction stir processing).Therefore,a comprehensive review of these strengthening technolo-gies is conducted to illuminate the possible correlations between the strengthening mechanisms and the resultant deposit microstructures and mechanical properties.This review paper aims to help researchers and engineers well understand the different strengthening methods and provide guidance for the cold spray community to develop new strengthening strategies for future high-quality mass production.

关 键 词：Cold spray Additive manufacturing Strengthening Microstructure DUCTILITY Tensile strength 

分 类 号：TG1[金属学及工艺—金属学]