STUDY OF STRENGTH, RELAXATION AND CORROSION RESISTANCE OF ULTRAFINE AUSTENITIC STEEL 08H18N10T OBTAINED BY RCU-PRESSING. I. STUDY OF MICROSTRUCTURE AND STRENGTH-Reference-Cited by-同舟云学术

STUDY OF STRENGTH, RELAXATION AND CORROSION RESISTANCE OF ULTRAFINE AUSTENITIC STEEL 08H18N10T OBTAINED BY RCU-PRESSING. I. STUDY OF MICROSTRUCTURE AND STRENGTH

Published:2023-12-15 Issue:4 Volume: Page:60-75
ISSN:0869-5733
Container-title:Микология и фитопатология
language:
Short-container-title:Metally

Author:

Kopylov V. I¹,Chuvil'deev V. N¹,Nokhrin A. V¹,Gryaznov M. Yu¹,Shotin S. V¹,Smetanina K. E¹,Tabachkova N. Yu²³

Affiliation:

1. Physics and Technology Research Institute of Lobachevsky State University of Nizhniy Novgorod (PTRI UNN)

2. Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia

3. National Research Technological University "MISiS"

Abstract

The microstructure and mechanical properties at room and elevated temperatures of ultrafine-grained steel 08H18N10Т, obtained by the equal-channel angular pressing method (ECAP) at temperatures of 150 and 450 °C have been studied. It has been established that UFG steel has an increased content of α`-martensite and when it is heated, nanoparticles of the σ-phase are released. It has been shown that ultrafine-grained steel has high tensile strength and good ductility. A decrease in the Hall-Petch coefficient of ultrafine-grained steel was noted, which is due to the fragmentation of δ-ferrite particles during ECAP.

Publisher

The Russian Academy of Sciences

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