Two Laser Beam Modulation of Microstructure and Residual Stress Field in Cold Sprayed Al Alloy for Recovering Fatigue Performance

• DOI: 10.2139/ssrn.4129292
• Publication Date: 2022-06-07T18:53:25Z
• Authors: Xinlei Pan; Qiang Wang; Shifeng Wen; Nan Li; Min Yi; Yiqi Zhu; Song Shu; Jian Nan; Liucheng Zhou
• Keywords: Modulation (music)

Cold spray process has been demonstrated to be an attractive additive manufacturing technology develop freeform and coatings out of temperature-sensitive materials by high-velocity particle impact. However, because lower bonding strength inhomogeneous residual stress field distribution, the fatigue performance cold sprayed deposition couldn’t satisfy requirement in many engineering condition. In present work, we proposed a novel promising approach recover repairing components two laser beams modulation, taken 7075 Al alloy as research object. treatment, one is used during CS irradiate impact location via laser-induced thermal effects, which mode transformed from mechanical metallurgical bonding, thereby improving strength. And another post treatment optimize distribution effects ultrahigh shock wave below water confinement. Under such circumstances samples successfully brought back wrought/cast Our work demonstrates that this combination presents wide range possibilities for further development advanced technology.