Structure and mechanical properties of a granulated EP741NP alloy produced by a technology including hot isostatic pressing and metal forming

Additional hot metal forming of granulated EP741NP alloy workpieces produced by hot isostatic pressing is shown to affect the γ-grain size. It can provide an optimum γ-grain size and, thus, an increase in the hot-strength characteristics of the alloy and its low-cycle fatigue resistance at elevated temperatures.