Abstract
The occurrence of anomalous particles (granules) with significantly different contents of interstitial microalloying elements, that is, carbon and boron, is an important feature of the homogeneity of the composition of rapidly quenched powders of stainless steels and high temperature Ni-based superalloys produced by the PREP method. A multi-scale experimental study of the evolution of the structure of PM HIP stainless steels under heat treatment and hot deformation has been carried out. Direct nuclear methods of activation autoradiography on carbon, track autoradiography on boron, metallography, SEM, EDX, and OIM have been used to reveal the evolution of the microstructure of PM HIP stainless steels. A significant effect of heat treatment and hot deformation on the behavior of carbon and boron in PM HIP stainless steels has been revealed. A significant effect of the microstructure evolution and the behavior of carbon and boron on the mechanical properties of PM HIP stainless steels in comparison with those of their traditional counterparts has been discovered and discussed.
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Shulga, A.V. Nature of Anomalous Particles (Granules) in Rapidly Quenched PREP Powders: IV. A Multiscale Study of the Structure Evolution of the PM HIP Stainless Steels under Heat Treatment and Hot Deformation. Phys. Atom. Nuclei 85, 2015–2031 (2022). https://doi.org/10.1134/S1063778822100581
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DOI: https://doi.org/10.1134/S1063778822100581