Effect of Hot Isostatic Pressing on the Microstructure of Directionally Solidified Nickel Alloy After SLM
Evgenii Borisov (Peter the Great Saint-Petersburg Polytechnic University)
Anna Gracheva (Peter the Great Saint-Petersburg Polytechnic University)
V Popovich (Peter the Great Saint-Petersburg Polytechnic University, TU Delft - Team Vera Popovich)
Anatolii Popovich (Peter the Great Saint-Petersburg Polytechnic University)
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Abstract
The paper investigates the effect of hot isostatic pressing of single-crystal nickel-based alloy manufactured by selective laser melting (SLM) with a high-temperature substrate preheating. A study of the structure and phase composition of the material before and after treatment has been carried out. It was found that as a result of such treatment, the ratio and proportion of the strengthening phases change; however, due to slow cooling after treatment, the optimal ratio and shape of the inclusions are not fixed. In addition, the hardening particles are precipitated.