|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Fundamental Aspects and Modeling Powder Metal Synthesis and Processing
||Engineering the Microstructure and Mechanical Properties of Titanium Alloys via Hydrogen Sintering and Phase Transformation (HSPT)
||James D. Paramore, Brady G. Butler, Jonathan P. Ligda, Z. Zak Fang, Matt Dunstan
|On-Site Speaker (Planned)
||James D. Paramore
Hydrogen sintering and phase transformation (HSPT) is a powder metallurgical process that utilizes hydrogen-enabled phase transformations to refine microstructure during sintering. This process has been shown to produce unique ultra-fine grained microstructures in titanium alloys in the as-sintered state with exceptional mechanical properties. Additionally, the as-sintered microstructure may be further evolved via simple heat treatments to produce a range of traditional wrought-like microstructures without requiring energy-intensive thermomechanical processing. This allows for low-cost microstructural engineering to produce a range of application-tailored mechanical properties. Evidence gained from advanced microscopy techniques regarding the unique mechanisms for microstructural evolution during sintering and subsequent heat treatments will be presented. Additionally, the exceptional strength, ductility, and fatigue performance of titanium alloys produced via this low-cost process will be discussed in the context of microstructure and processing.