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Meeting Materials Science & Technology 2020
Symposium Manufacturing and Processing of Advanced Ceramic Materials
Presentation Title Laser Shock Processing of Silicon Carbide Ceramics
Author(s) Fei Wang, Xueliang Yan, Chenfei Zhang, Leimin Deng, Yongfeng Lu, Michael Nastasi, Bai Cui
On-Site Speaker (Planned) Bai Cui
Abstract Scope Laser shock processing (LSP) is a novel advanced manufacturing technique that utilizes a nanosecond pulse laser to generate plasma-driven shock waves, which can induce a high compressive residual stress to a depth of about 1 mm from the surface. Compared to metals, the application of LSP to ceramic materials is limited and the associated mechanisms are poorly understood. Our research has reveal the fundamental mechanisms underlying the microstructural changes and mechanical properties in ceramic materials (such as α-SiC) in the LSP process. TEM characterizations revealed significant dislocation activities near the surface and grain boundaries, suggesting that the localized plastic deformation was generated by LSP at room temperature. X-ray diffraction analysis showed that the compressive residual stress can extend from the surface to a depth of 750 Ám. The LSP-induced localized plasticity can improve the mechanical properties of SiC ceramics, such as the apparent fracture toughness and bending strength.
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Progress Report on the Synthesis and Characterization of MAX and MAB Phases
A Rational Design of Ultra-uniform Nanocrystalline Materials
Design, Synthesis and Processing of Novel Ionic Conductors for All-solid-state Batteries
Developing Materials and Coating Technologies for Mitigation of Lunar Dust Adhesion and Abrasion
Fabricating Alumina with Heterogeneous Microstructure Using Integrated Additive/Subtractive Manufacturing (IASM)
Fusion Welding of Structural Ceramics
Identifying Multidisciplinary Research Opportunities in Ceramic Processing
Indirect Additive Manufacturing of Ceramics
Investigating the Dependence of Microstructure Evolution in Alumina on the Liquid Phase Chemistry in the CaO-Al2O3-SiO2 System: Densification, Grain Growth and Secondary Phase Formation
Laser Shock Processing of Silicon Carbide Ceramics
Neutrons Guide Materials Design and Synthesis of Functional Oxides
Opportunities for Tailored Grain Boundary Networks in Thermomagnetically Processed Alumina Ceramics
Optimized Etching of Porcelain and Polycrystalline Alumina with a Glass Phase
Processing and Properties of High Thermal Conductive Silicon Nitride Ceramics
Self-bonded Refractories for Investment Casting Mold Manufacture
Synthesis and Flash Sintering of (Hf1-xZrx)B2 Solid Solution Fine Powders
Thermal Stability and Mechanical Properties of High-entropy Carbide Ceramics with Submicron Grain Size Fabricated by Spark Plasma Sintering
Transparent Ceramics by Lithography-Based Additive Manufacturing

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