Thermophysical properties of additively manufactured Ti-5553 alloy AITranslate

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DOI：https://doi.org/10.1016/j.addma.2023.103769

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The thermophysical properties of the additively manufactured, heat-treated Ti‐5Al‐5V‐5Mo‐3Cr alloy (Ti-5553), including heat capacity, thermal strain, and thermal diffusivity, were measured from room temperature to 1250 °C under a protective argon environment and compared to microstructural features. These data are used to calculate the temperature dependence of thermal conductivity at 50 °C intervals. Changes observed in these thermal characterizations reflect the diffusion-controlled transformation sequence of a typical metastable β titanium alloy. Measurements were made on material in the as-printed β phase and in a heat treated 66% α phase. A comparison of these results to published data for conventional and additively manufactured material indicates that processing and heat treatment variations have little impact on the thermophysical properties for the Ti-5553 alloy, presumably due to the heavy alloying effect.