The effect of heat treatment on microstructure evolution and tensile properties of selective laser melted Ti6Al4V alloy

By Zulei Liang, Zhong-gang Sun, Wenshu Zhang, Shikai Wu, Hui Chang. Journal of Alloys and Compounds, 2019

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Abstract The phase transition, microstructure, detailed structures and tensile properties of selective laser melted Ti6Al4V alloy were been examined and analyzed. The results reveal that the as-fabricated Ti6Al4V samples consist of lamellar α' and acicular α' . Much twins in the lamellar α' and small α 2 precipitation in the acicular α' were found. The effects of different heat treatment methods on the as-fabricated samples were also investigated. As a result of the microstructure evolution, samples heat-treated at 800 °C and 850 °C for 4 hours and cooled in air contain the most β and the finest lamellar α , exhibiting good comprehensive properties.

Subfields: Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/becc9c22b6898c1153620e791f799d394e5ad585