|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||High Entropy Alloys V
||The Study of Fatigue Behavior in Refractory High Entropy Alloys
||Shuying Chen, Chien-Chang Juan, Jien-Wei Yeh, Karin A Dahmen, Peter K. Liaw
|On-Site Speaker (Planned)
In our study, fatigue behavior was studied on refractory high-entropy alloys (HEAs) in the stress range from 800 MPa to 1,350 MPa during four-point-bending-cyclic loading experiments. The present fatigue investigation showed encouraging fatigue-resistance characteristics due to the prolonged fatigue lives at relatively high stresses. The current results indicate that the fatigue behavior of HEAs are generally better than many other conventional alloys, such as steels, titanium alloys, and advanced bulk metallic glasses with a fatigue endurance limit of between 360 and 512 MPa and a fatigue endurance limit to ultimate tensile strength ratio between 0.45 and 0.504. Besides, it was interesting to find that the noticeable grain growth could happen after long cyclic loading experiments, which may be a precursor to crack initiation.
||Planned: Supplemental Proceedings volume