Macroscopic and microscopic investigations on uniaxial ratchetting of two-phase Ti–6Al–4V alloy

What is it about?

Ti–6Al–4V alloy is extensively used in aerospace and petroleum industries due to its high specific strength, moderate ductility, good elevated temperature performance and high corrosion resistance. The uniaxial ratchetting of Ti–6Al–4V alloy was investigated by macroscopic and microscopic experiments at room temperature. Based on the observed microstructure and their evolution, the uniaxial ratchetting of Ti–6Al–4V alloy is qualitatively explained.

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Why is it important?

In the applications of Ti–6Al–4V alloy, the structure components are often subjected to cyclic loading, and fatigue is the main cause of structure failure. This work systematically studied the cyclic deformation behavior of Ti–6Al–4V alloy at room temperature by macroscopic and microscopic experiments. The results provided a good guidance for rational application of Ti–6Al–4V alloy products.