Determining Deformation Behavior of AISI 9310 Steel Varying Temperature and Strain Rate for Aerospace Applications

AISI 9310 steel is commonly used for aerospace gear applications. It typically undergoes extreme processing conditions such as machining, carburizing, and hardening operations. These processes span a wide temperature range and can induce strain into the final material. Consequently, further analysis is needed to better understand the material’s deformation behavior and properties. This experiment applies material flow stress data for AISI 9310 steel obtained using a Gleeble 3500 physical simulator to the Johnson-Cook (JC) damage model to accurately predict material deformation behavior at varying temperatures and strain rates. Gleeble simulations were conducted over a temperature range of 25oC to 700oC and at strain rates of 0.05 to 1 per second. Combining Gleeble 3500 testing with Digital Image Correlation analysis allows three-dimensional strain measurement during flow stress experiments. Flow stress curves were analyzed to determine the strain hardening exponent, strength coefficient and thermal softening coefficient to input into the Johnson-Cook flow stress model equation. The results of this study will allow us to accurately determine flow stress behavior of AISI 9310 steel and to find most optimal JC model parameters.