Abstract
The hot working characteristics of 16Cr-5Ni stainless steel are studied using the results of hot compression tests. Hot compression tests were performed to a total true strain of 0.69 in the strain rate range of 0.001-10 s−1 and temperature range of 900-1100°C. Average value for activation energy is obtained as 403 kJmol−1. The processing maps were constructed based on dynamic materials model at true strain of 0.5. Stable and unstable regimes for hot working are identified and these are verified from the microstructural observations. Optimum hot working conditions associated with dynamic recrystallization are found to be in the strain rate range of 0.01-0.1 s−1 and temperature range of 1000-1100°C, which correspond to a peak power dissipation efficiency of 31%.
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