|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Fundamental Aspects and Modeling Powder Metal Synthesis and Processing
||Microwave vs Conventional Sintering of Ti Powders: Comparative Analysis
||Charles Maniere, Tony Zahrah, Eugene Olevsky
|On-Site Speaker (Planned)
Microwave sintering presents potential benefits such as high heating rates, low power consumption and increase of the sintering rate compared to the conventional sintering. The main challenges associated with this technique are relative temperature instabilities compared to the conventional technique where the heating is long but more stable. A fully coupled ElectroMagnetic-Thermal-Mechanical (EMTM) finite element simulation of the sintering of a Ti powder in a standard microwave cavity is performed and compared to the outcomes of the processing of the same powder specimen in a conventional sintering furnace. The model takes into account both the evolution of the electromagnetic heating parameters and the non-uniform shrinkage of the sample due to the thermal gradients. The comparison of the temperature distribution, the evolution of the sample shape and porosity distribution is made for both microwave (direct/hybrid heating) and conventional sintering techniques.