Anisotropic response of cold sprayed copper deposits

Rang Yang, Wenya Li

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Cold spray (CS) is characterized as a solid-state process of high deposition efficiency for metallic coatings as well as additive manufacturing of metals. However, due to high velocity impact and extensive deformation of particles during CS, the as-received coatings or deposits may present anisotropic characteristics which could influence the performance of deposits. Hence this study aims to investigate the anisotropic behaviors of CSed copper deposits in a systematic way. The microstructure and micromechanical properties of the deposits both in the cross-section (v-face) and in the parallel plane to the surface (p-face) were characterized. Tensile tests were performed at various loading angles with respect to the nozzle moving direction in the p-face. It is revealed that there exist strong microstructural and mechanical anisotropics in CSed deposits. Different interparticle interaction results in more severe particle impact deformation in v-face than p-face, with larger elastic modulus and microhardness values. The tensile tests show an unexpected anisotropy in both ultimate tensile strength and elongation, with the highest performance occurring at the angle of 20°. The in-plane tensile anisotropy could be attributed to the parallel multiple passes. Therefore, a novel weave-spraying method was proposed, which can greatly reduce the tensile anisotropy of CSed deposits.

源语言英语
主期刊名ASM International - International Thermal Spray Conference, ITSC 2018
编辑Fardad Azarmi, Timothy Eden, Hua Li, Filofteia-Laura Toma, Kantesh Balani, Tanvir Hussain, Kentaro Shinoda
出版商ASM International
187-193
页数7
ISBN(电子版)9781510880405
出版状态已出版 - 2018
活动International Thermal Spray Conference, ITSC 2018 - Orlando, 美国
期限: 7 5月 201810 5月 2018

出版系列

姓名Proceedings of the International Thermal Spray Conference
2018-May

会议

会议International Thermal Spray Conference, ITSC 2018
国家/地区美国
Orlando
时期7/05/1810/05/18

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