About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Heterostructured and Gradient Materials (HGM IV): Tailoring Heterogeneity for Superior Properties
|
| Presentation Title |
Effect of Rolling on Fatigue Crack Propagation in Harmonic Structured Commercially Pure Titanium |
| Author(s) |
Yoshikazu Nakai, Shoichi Kikuchi, Kohei Osaki, Mie Ota Kawabata, Kei Ameyama |
| On-Site Speaker (Planned) |
Yoshikazu Nakai |
| Abstract Scope |
Commercially pure (CP) titanium with a bimodal harmonic structure, which is defined as coarse-grained structure surrounded by a network structure of fine grains, was fabricated by consolidating mechanically milled powders to improve both the strength and ductility. In the present study, thermo-mechanical processing (TMP) was performed for the CP titanium with a bimodal harmonic structure to improve its fatigue properties. Fatigue crack propagation tests were conducted to clarify the effects of rolling ratio, rolling direction, and force ratio of TMP-treated CP titanium with harmonic structure. For either material, the crack growth rates for L-T direction were always higher than that of T-L direction, and the rate for higher force ratio is higher for higher force ratio and higher rolling ratio, where the crack growth direction was perpendicular to the rolling direction for L-T direction, and it was parallel to the rolling direction for T-L direction. |
| Proceedings Inclusion? |
Planned: |