Document Type

Article

Publication Date

7-2013

Journal or Book Title

Metallurgical and Materials Transactions A

Volume

44

Issue

7

First Page

3147

Last Page

3156

DOI

10.1007/s11661-013-1688-9

Abstract

Accurate measurement of residual stress is necessary to obtain reliable predictions of fatigue lifetime and enable estimation of time-to-facture for any given stress level. In this article, relaxation of welding residual stresses as a function of cyclic loading was documented on three common steels: AISI 1008, ASTM A572, and AISI 4142. Welded specimens were subjected to cyclic bending (R = 0.1) at different applied stresses, and the residual stress relaxation existing near the welds was measured as a function of cycles. The steels exhibited very different stress relaxation behaviors during cyclic loadings, which can be related to the differences in the microstructures of the specimens. A phenomenological model, which treats dislocation motion during cyclic loading as being analogous to creep of dislocations, is proposed for estimation of the residual stress relaxation.

Comments

This article is from Metallurgical and Materials Transactions A 44 (2013): 3147-3156, doi: 10.1007/s11661-013-1688-9. Posted with permission.

Rights

Copyright 2013 ASM International. This paper was published in Metallurgical and Materials Transactions A, Vol. 44, Issue 7, pp. 3147-3156 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.

Copyright Owner

ASM International and The Minerals, Metals & Materials Society

Language

en

File Format

application/pdf

Included in

Metallurgy Commons

Share

COinS