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Relaxation of Residual Stresses in a Surface-Hardened Cylinder under Creep Conditions and Rigid Restrictions on Linear and Angular Deformations

Authors
  • Radchenko, V. P.1
  • Tsvetkov, V. V.1
  • Derevyanka, E. E.1
  • 1 Samara State Technical University, Samara, 443100, Russia , Samara (Russia)
Type
Published Article
Journal
Mechanics of Solids
Publisher
Pleiades Publishing
Publication Date
Nov 01, 2020
Volume
55
Issue
6
Pages
898–906
Identifiers
DOI: 10.3103/S0025654420660024
Source
Springer Nature
Keywords
License
Yellow

Abstract

Abstract—A method for solving the boundary value problem of a residual stress relaxation in a surface-hardened solid cylinder under creep conditions with initially defined and rigidly fixed axial deformation and torsion angle has been developed. It includes a phenomenological methodology for reconstructing the stress-strain state after hardening and its kinetics during relaxation of axial load and torsional moment due to creep. In order to illustrate the method, a cylindrical specimen made of ZhS6KP alloy after pneumo-shot peening is considered. A detailed investigation of the residual stress relaxation has been performed for various combinations of initially defined and fixed axial and angular deformations at temperature of 900°C. The results of a comparative analysis of obtained data with data for the residual stress relaxation under pure temperature loading in the absence of mechanical loads are presented.

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