2026-03-13T15:01:45Z https://kanazawa-u.repo.nii.ac.jp/oai

oai:kanazawa-u.repo.nii.ac.jp:00009435 2024-06-20T06:12:08Z 934:935:936

Influence of applied tensile stress on formation and growth of ellipsoidal ω precipitates in a Ti-20wt%Mo alloy 20166466 Monzen, Ryoichi Kawai, Ryutaro 60345600 Watanabe, Chihiro The effects of tensile stress on the nucleation and growth of ellipsoidal ω phase precipitates have been investigated for a Ti-20wt%Mo alloy aged at 300 °C. Application of a tensile stress promotes not only the nucleation but also the growth of ω precipitates. Estimates of the average misfit strains along the loading and the transverse directions from measurements of the length change reveal the preferential formation of specific ω variants among crystallographicallyequivalent four ones. The average size of the precipitates in the alloy aged under no stress follows initially a parabolic growth law, whereas when aged under a tensile stress of 400 and 450MPa the precipitate size increases linearly with aging time, this fact indicating that while the growth of ω precipitates is governed by diffusion of Mo from the ω/β interface to the β matrix under no stress, precipitate growth is instead interface-controlled under tensile stress. International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 2015-07-03 2017-10-03 eng journal article AM http://hdl.handle.net/2297/45569 https://kanazawa-u.repo.nii.ac.jp/records/9435 PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 427 434 https://kanazawa-u.repo.nii.ac.jp/record/9435/files/TE-PR-MONZEN-R-427.pdf application/pdf 814.7 kB 2017-10-03