Abstract
In this study, hot isostatic pressed Ni-base superalloy was subjected by high-pressure torsion process to improve the dispersion of gamma prime phase, mechanical properties and remove prior particle boundaries. The resulting microstructural size decreases and prior particle boundaries removed with increasing strain by high-pressure torsion process. Moreover, the microhardness values and room temperature tensile strength were enhanced. However, the tensile elongation was decreased as increasing strain due to fast crack propagation along the refined and well dispersed gamma prime particles.
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