|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Metal-Matrix Composites: Analysis, Modeling, Observations and Interpretations
||The Effect of Solution Treatment Aging on Hardness Improvement of Ti-6Al-4V/TiC Metal Matrix Composite
||James K. Penney, Sergey Prikhodko, Pavlo Markovsky, Dmytro Savvakin, Olek Stasuik
|On-Site Speaker (Planned)
||James K. Penney
Discontinuously reinforced Ti alloys fabricated using low-cost powder metallurgy processes attracts significant attention due to prospective of major improvement in hardness and exceptional wear resistance of the light host metal. In this study, structures of metal-matrix composites (MMC) of Ti-6Al-4V alloy reinforced with hard particles of TiC (0-60%, vol.) were fabricated using blended elemental powder metallurgy (BEPM) with hydrogenated Ti as the base. Post-sintering solution treatment aging (STA) at 880 and 1000°C for 45min, followed by water quenching at 550°C for 5h was employed to improve the microstructure and properties. During thermal exposures of primary and secondary processing, the matrix and reinforcement particles retain their separate identity. It was found that the thermal treatment of MMC used leads to an increase of hardness of up to fifty percent compared to as-sintered condition. The material was characterized, and property changes were explained using light optical microscopy, SEM-EDS, EBSD, TEM and XRD.