文献类型：期刊文献

英文题名：Unraveling microforging principle during in situ shot-peening-assisted cold spray additive manufacturing aluminum alloy through a multi-physics framework

作者：Wang, Qian[1];Ma, Ninshu[1];Shi, Junmiao[2];Huang, Wenjia[1];Luo, Xiao-Tao[3];Geng, Peihao[1];Zhang, Mingxing[4];Zhang, Xian-Cheng[2];Li, Chang-Jiu[3]

机构：[1]Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan;[2]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[3]Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China;[4]Univ Queensland, Sch Engn, Div Mat, Brisbane, Qld 4072, Australia

年份：2023

卷号：236

外文期刊名：MATERIALS & DESIGN

收录：;EI(收录号：20234815131536);WOS:【SCI-EXPANDED(收录号:WOS:001150107900001)】；

基金：This research was financially supported by the Japan Society for the Promotion of Science (Grants-in-Aid for Scientific Research: 20H02452 and 23K13577) , Amada Foundation (AF-2022034-C2) , as well as OU master project of Osaka University for promoting international collaboration research. The authors would like to appreciate the assistance of Mr. Masuo Ito in microstructure characterization. Prof. Luo and Prof. Li from Xi 'an Jiaotong University appreciate the financial support from the National Natural Science Foundation of China (52375379) and Science Center for Gas Turbine Project (HT-P2022-B-IV-011-001) .

语种：英文

外文关键词：Cold spray; Additive manufacturing; Extreme deformation; Grain refinement; Microforging

摘要：Cold spray (CS) is a highly potential solid-state additive manufacturing (AM) technique. In situ shot-peeningassisted CSAM was proposed to additively manufacture fully dense deposits using cost-effective and renewable nitrogen gas. The role of in situ shot-peening particles is critical but remains unclear. Here, the process was quantitatively modeled to visualize the dynamic deformation, energy conversion, as well as cell/sub-grain size and microhardness evolutions, compared to those during the conventional CSAM process, identifying the key role of in situ shot-peening particles in the AA6061 extreme deformation and microstructure characteristics during in situ shot-peening-assisted CSAM. High-fidelity modeling was verified fully by comparing the experimental and model-reproduced deformation profiles, cell/sub-grain size distributions, and increases in microhardness. The results show that the kinetic energy of in situ shot-peening particles was 470 times higher and dissipated mainly through AA6061 plastic deformation (86.36% of total energy), leading to significant enhancement of microhardness and tensile strength. Moreover, the mixing ratio of large-size SS410 particles required to create a fully dense deposit was evaluated from an energy perspective, in good agreement with the experiment. This study elucidates the microforging principle during in situ shot-peening-assisted CSAM, providing scientific guidelines for high-quality and low-cost CSAM of high-strength aluminum alloys.