| Abstract Scope |
This study is concerned with material properties of titanium alloy sheet at different temperatures and strain rates. A commercial titanium alloy, Ti6Al4V, with 1.5 mm thickness was selected to test properties of α+β type titanium alloy. To identify mechanical responses of the titanium alloy, tensile specimens were cut from the sheet following the dimensions from the ASTM E8 standard. Testing conditions for ranges of the temperature and the strain rate were set from the room temperature (25 degree Celsius) to 1200 degree Celsius, and from 0.001 /s to 10/s, respectively. Tensile tests were carried out using the Gleeble 3500 with the digital image correlation (DIC) system. The experimental results show that the plasticity for all the rates becomes remarkably enhanced but the flow stress level extremely decreases as the temperature increases. The details of strain rate effect on the material properties were discussed considering the temperature and its microstructural characteristics. |