Characterization of Fusion Welding in SiC-based Ceramic Composites-An Integrated Experimental and ICME-based Approach
Abstract
This proposed research integrates physical experimentation, in-situ real-time characterization, and computational modeling techniques to advance the fundamental understanding of fusion welding, specifically plasma arc welding (PAW), in SiC-based composite ultra-high temperature ceramics (UHTC). The project aims to establish a foundational grasp of ceramic composition, welding conditions, and desired microstructure to tailor solidification process through PAW and enhance joint s mechanical properties to be comparable to those of the parent material (PM). This will be achieved by developing numerical tools using ICME-based (integrated computational materials engineering) approach for thermodynamics and kinetics analysis of the melt pool, heat transfer mechanism and microstructural evolution through solidification, fluid flow of the melt pool at meso-scale to elucidate the porosity formation mechanism, and deformation and crack propagation mechanism in SiC-based UHTC joints under PAW. It allows the establishment of the process-microstructure-property relationships for tailoring SiC welding process for desired properties. The combined experimental-computation approach is anticipated to shed light on understanding the solidification mechanism in complex systems such as ternary SiC-ZrB2-ZrC melt pool, in melt-solidification ceramics manufacturing methods and additive manufacturing (AM) of ceramics, and a predictive model of ceramic weldability while establishing a design roadmap to tailor microstructure.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 29, 2024
- Source ID
- FA95502310260
Entities
People
- Arezoo Emdadi
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Missouri System