Thermo-metallo-mechanical modelling of heat treatment induced residual stress in Ti–6Al–4V alloy

Rae, W. (2019) Thermo-metallo-mechanical modelling of heat treatment induced residual stress in Ti–6Al–4V alloy. Materials Science and Technology, 35 (7). pp. 747-766. ISSN 0267-0836

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    Abstract

    Residual stress fields dynamically fluctuate throughout the manufacturing process of metallic components and are caused by local misfit of a thermal, mechanical or metallurgical nature. Recent advances have been made in the area of microstructure and residual stress prediction; yet few have considered dual-phase titanium alloys. The aim of the work presented was to carry out a review of the existing state-of-the-art in residual stress modelling with an intended application to industrial heat treatment of Ti–6Al–4V alloy. Four areas were evaluated: thermal, mechanical and metallurgical sub-models, and model validation via residual stress measurement. Recommendations for future research include further investigation of transformation induced plasticity and stress relaxation behaviour in Ti–6Al–4V.