Changes in the state of heat-resistant steel induced by repeated hot deformation

Changes in the state of heat-resistant steel induced by repeated hot deformation

Bibliographic Details
Parent link:Metals and Materials International
Vol. 24, iss. 1.— 2018.— [P. 121-129]
Corporate Authors: Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Кафедра парогенераторостроения и парогенераторных установок (ПГС и ПГУ), Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова)
Other Authors: Lyubimova L. L. Lyudmila Leonidovna, Fisenko R. N. Roman Nikolaevich, Tashlykov A. A. Aleksandr Anatolievich, Tabakaev R. B. Roman Borisovich
Summary:Title screen
This work deals with the problems of structural regeneration by thermal restoration treatment (TRT). These include the lack of a structural sign showing that TRT is possible, a consensus on TRT modes, the data on the necessary relaxation depth of residual stresses, or criteria of structural restoration. Performing a TRT without solving these problems may deteriorate the properties of steel or even accelerate its destruction. With this in view, the purpose of this work is to determine experimentally how the residual stress state changes under thermal and mechanical loads in order to specify the signs of the restoration of structure and structural stability. The object of this research is unused 12Cr1MoV steel that has been aged naturally for 13 years. Using X-ray dosimetry with X-ray spectral analysis, we study the distribution of internal residual stresses of the first kind during the repeated hot deformation. After repeated thermal deformation, the sample under study transforms from a viscoelastic Maxwell material into a Kelvin-Voigt material, which facilitates structural stabilization. A sign of this is the relaxation limit increase, prevention of continuous decay of an ?-solid solution of iron and restoration of the lattice parameter.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2018
Subjects:
электронный ресурс
труды учёных ТПУ
металлы
рентгеновская дифракция
остаточное напряжение
Online Access:https://doi.org/10.1007/s12540-017-7031-z
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657586

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