|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Powder and Ceramic Materials Science
||Microstructures and Mechanical Properties of á-SiC Ceramics after High-temperature Laser Shock Peening
||Fei Wang, Xin Chen, Daniel P. DeLellis, Amanda Krause, Yongfeng Lu, Bai Cui
|On-Site Speaker (Planned)
A novel high-temperature laser shock peening (HT-LSP) process was applied to polycrystalline á-SiC to improve the mechanical performance. HT-LSP prevents microcrack formation on the surface while induces plastic deformation in the form of dislocation slip on the basal planes, which may be caused by the combination of high shock pressure and a lower critical resolve sheat stress at 1000 ℃. A maximum compressive residual stress of 650 MPa was introduced into the surface of á-SiC by HT-LSP, which can increase the in-plane fracture toughness of á-SiC by 36%. This work presents a fundamental base for the promising applications of HT-LSP to brittle ceramics to increase their plasticity and mechanical properties.