About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Heterostructured and Gradient Materials (HGM IV): Tailoring Heterogeneity for Superior Properties
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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: |