|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Computational Materials Discovery and Optimization
||L-27: Computational Design of Fatigue-resistant NiTi-based Shape Memory Alloys
||Chuan Liu, Gregory B. Olson
|On-Site Speaker (Planned)
Long fatigue life is of essential importance to the biomedical application requirements of NiTi-based shape memory alloys. Fatigue simulations modeling crack nucleation have identified the significance of increasing matrix yield strength and controlling inclusion size. Precipitation strengthening of coherent nanoscale L21 Heusler aluminides is an effective approach to enhance its matrix yield strength. A system design approach is taken to develop high strength NiTi-based alloys with quaternary additions, Zr. And the rapid solidification method has been applied in our system design to avoid Zr-rich brittle phase and to control inclusion size simultaneously.
||Planned: Supplemental Proceedings volume