Authors:
Andrey Shulga (National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Russia)
Abstract:
The occurence of anomalous particles (granules) with significantly different content of interstitial microalloying elements carbon and boron is an important features of the homogeneity of the composition of rapidly quenched powders of stainless steels and Ni-based superalloys produced by the PREP method. A multi-scale experimental investigation of the evolution of the structure of the PM HIP stainless steels under hot deformation and heat treatment was performed. Direct nuclear methods of activation autoradiography on carbon, track autoradiography on boron, metallography, SEM, EDX, and OIM were used to reveal the evolution of the microstructure of the PM HIP stainless steels. A significant effect of hot deformation and heat treatment on the behavior of carbon and boron in PM HIP stainless steels has been revealed in comparison with their traditional counterparts. Essential lnfluence of the evolution of carbon and boron on the mechanical properties of PM HIP stainless steels was found
DOI:
https://doi.org/10.59499/WP225369660