Effects of the Tempering and High-Pressure Torsion Temperatures Onmicrostructure of Ferritic/Martensitic Steel Grade 91
Grade 91 (9Cr-1Mo) steel was subjected to various heat treatments and then to high-pressure torsion (HPT) at different temperatures. Its microstructure was studied using transmission electron microscopy (TEM) and X-ray diffraction (XRD). Effects of the tempering temperature and the HPT temperature on the microstructural features and microhardness in the ultrafine-grained (UFG) Grade 91 steel were researched. The study of the UFG structure formation takes into account two different microstructures observed: before HPT in both samples containing martensite and in fully ferritic samples.
A. Ganeev et al., "Effects of the Tempering and High-Pressure Torsion Temperatures Onmicrostructure of Ferritic/Martensitic Steel Grade 91," Materials, vol. 11, no. 4, MDPI AG, Apr 2018.
The definitive version is available at https://doi.org/10.3390/ma11040627
Materials Science and Engineering
Keywords and Phrases
Ferritic/Martensitic Steel; High-Pressure Torsion; Ultrafine-Grained Structure
International Standard Serial Number (ISSN)
Article - Journal
© 2018 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
01 Apr 2018
The authors are grateful to the Russian Ministry of Education and Science within the project part of the program for universities through project No. 16.2061.2017/4.6.