|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||GAT-2017 (Gamma Alloys Technology - 2017)
||Properties at High Temperatures of the IRIS Alloy Densified by Spark Plasma Sintering
||Soumaya Naanani, Jean-Philippe Monchoux, Catherine Mabru, Alain Couret
|On-Site Speaker (Planned)
The aim of this work is to study the behavior of the IRIS alloy (Ti-48Al-2W-0.08B) densified by Spark Plasma Sintering (SPS) under solicitations reproducing the thermomechanical environment during service in aero or automotive engines. SPS is a powder metallurgy technique, for which the heating of the sample occurs by the application of a pulsed direct electric courant. The IRIS alloy microstructure is made of small lamellar grains surrounded by single-phased γ borders, as the results of the powder metallurgy route. Several properties of the IRIS-SPS alloy will be examined: i) the evolutions of microstructure and properties of the alloy under aging treatments as 9 000h at 750°C, ii) the creep properties at 800°C and 850°C under various stress levels and, iii) the low cycle fatigue behavior at temperatures higher than 700°C.
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