Research on wear resistance of (tib+la2o3)/imi834 with micro-laser shock peening

Micro-Laser Shock Peening (Micro-LSP) is an advanced laser surface modification technology. The surface of (TiB+La2O3)/IMI834 samples was treated with micro-laser shock processing. Characterization and analysis of the samples before and after the treatment were conducted using a microhardness tester, scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), and residual stress meter. The results indicated that the (TiB+La2O3)/IMI834 samples underwent substantial alterations in surface topography after Micro-LSP, characterized by an escalation in surface roughness from 0.738 μm to 1.956 μm, a peak residual compressive stress of 431.29 MPa, an augmentation in micro-hardness to 492 HV, and the formation of a hardened layer approximately 570 μm in thickness. Moreover, the wear rate of the samples decreased by 24.16% ∼ 32.12% after Micro-LSP.