Microhardness Homogeneity and Microstructure of High-Nitrogen Austenitic Steel Processed by High-Pressure Torsion; AIP Conference Proceedings; Vol. 1909 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2017 (AMHS’17)

Microhardness Homogeneity and Microstructure of High-Nitrogen Austenitic Steel Processed by High-Pressure Torsion; AIP Conference Proceedings; Vol. 1909 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2017 (AMHS’17)

Bibliographic Details
Parent link:AIP Conference Proceedings
Vol. 1909 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2017 (AMHS’17).— 2017.— [020129, 4 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ)
Other Authors: Maier G. Galina, Astafurova E. Elena, Melnikov E. Eugene, Moskvina V. Valentina, Galchenko N. Nina, Smirnov A. Alexander, Bataev V. Vladimir
Summary:Title screen
The authors investigate microhardness homogeneity and microstructure of the high-nitrogen austenitic steel Fe-23Cr-19Mn-0.2C-0.5N (wt %) subjected to high-pressure torsion. High-pressure torsion causes a significant increase in the microhardness of steel from 300 HV in the initial state up to 600 HV after torsion for one full revolution. Experimental results reveal a homogeneous distribution of microhardness values across the discs after deformation for N=1/4 revolution. The control of the top and bottom surfaces of steel specimens shows that microhardness radial distributions are independent of the side of the specimens (position of a moving plunger during plastic deformation). Under high-pressure torsion, the spacings between twin boundaries decrease, while the dislocation density increases. The formation of a twin net in high-nitrogen steel in high-pressure torsion for N=1/4-1 revolutions provides a homogeneous distribution of microhardness across the discs under torsion.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2017
Subjects:
электронный ресурс
труды учёных ТПУ
однородность
микроструктуры
микротвердость
аустенитные стали
кручения
высокое давление
деформации
свойства
materials properties
austenitic steels
microhardness
Online Access:https://doi.org/10.1063/1.5013810
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657147

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