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Abstract The isothermal martensitic transformation (IMT) behavior of Ti–20Nb–0.7O (mol %) alloy was investigated via X-ray diffractometry. Isothermal formation of the α″ martensite phase was observed, and the activation energy… Click to show full abstract
Abstract The isothermal martensitic transformation (IMT) behavior of Ti–20Nb–0.7O (mol %) alloy was investigated via X-ray diffractometry. Isothermal formation of the α″ martensite phase was observed, and the activation energy was determined using the time-temperature-transformation diagram coupled with differential scanning calorimetry. IMT in Ti–20Nb–0.7O alloy was explained by nanometer-sized local lattice modulations (nanodomains) and diffusion of oxygen atoms in the β phase. The latter was found to be the primary rate-determining process.
Journal Title: Materials Letters
Year Published: 2019
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