Dynamic Phase Transformation during Hot-Forging Process of a Powder Metallurgy α+β Titanium Alloy

B. Liu; H. Matsumoto; Y. P. Li; Y. Koizumi; Y. Liu; A. Chiba

doi:10.2320/matertrans.M2012042

B. Liu, H. Matsumoto, Y. P. Li, Y. Koizumi, Y. Liu, A. Chiba

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Keywords: titanium alloys, hot deformation, phase transformation, diffusion

JOURNAL FREE ACCESS

2012 Volume 53 Issue 5 Pages 1007-1010

DOI https://doi.org/10.2320/matertrans.M2012042

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Abstract

Dynamic phase transformation during subtransus forging was investigated in a powder metallurgy (PM) Ti–1.5Fe–2.25Mo alloy. The results show that compressive deformation restrains the hcp (α)→bcc (β) phase transformation, and induces a local martensitic transformation in the deformed sample during subsequent cooling. Thermodynamic analysis confirms the feasibility of these transformations.

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