The effect of high-pressure torsion on microstructure and strength properties of high-nitrogen austenitic steel

Autor:	V. A. Bataev, N. K. Galchenko, M. S. Tukeeva, Valentina Moskvina, I. A. Bataev, Elena G. Astafurova
Rok vydání:	2014
Předmět:	Austenite Solid solution strengthening Precipitation hardening Materials science Metallurgy Torsion (mechanics) General Materials Science Slip (materials science) Microstructure Crystal twinning Indentation hardness
Zdroj:	Letters on Materials. 4:269-272
ISSN:	2410-3535 2218-5046
Popis:	In this paper, we investigate the microstructure and microhardness of high-nitrogen austenitic steel after high-pressure upset and high-pressure torsion (6 GPa) at room temperature. As the result of deformation, steel microhardness increases by 1.5 times after high-pressure torsion per one revolution while the distribution of microhardness is quasi-homogeneous across the disks. The level of solid solution hardening of steel remains high after deformation processing, and the main mechanisms determining fragmentation of the steel structure are slip, twinning, formation of localized deformation microbands, and precipitation hardening.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8f9e5d4bace2d8293e03d940b95f2bef https://doi.org/10.22226/2410-3535-2014-4-269-272 Zobrazit plný text záznamu