Mechanical Behavior for 6016 Aluminum Alloy Under Hot-working Conditions
The flow stress behavior of 6016 aluminum alloy was investigated on the condition of temperature range from 420 ℃ to 540 ℃ and strain rate range from 0.001 s-1 to 1 s-1 based on hot compression experiment on Gleeble-1500 thermal simulation machine.The impact of experimental conditions on the strain hardening exponent n and strain rate sensitivity index m were discussed.The result shows that the flow stress of 6016 aluminum alloy is influenced by both strain rate and temperature,the flow stress decreases with the increase of temperature and increases with the increase of strain rate.When the temperature is greater than 420 ℃,the strain hardening exponent n is less influenced by temperature and strain rate;the strain rate sensitivity index m is 0.3036 at 500 ℃ and strain rate of 0.001 s-1;the flow stress behavior of 6016 aluminum alloy during hot compression deformation can be represented by Zener-Hollomon parameter in hyperbolic sine form;the fitting curves can be in good agreement with experimental curves.