Paper Title:
The Role of Constraint and Warm Pre-Stress on Brittle Fracture in Ferritic Steels
  Abstract

This paper presents the results of an experimental and numerical study carried out to investigate the effect of warm pre-stressing on cleavage fracture in ferritic steels using cracked and notched specimens. It is shown that the local approach based on Weibull theory predicts the increase in toughness following warm pre-stressing in highly constrained geometries. The observed effect of pre-loading in low constraint specimens such as round notched bars is less. The local approach could not predict the differences and it is suggested that the variation of triaxiality factor, the ratio of hydrostatic stress to Von Mises, in the plastic zone, is a contributing factor.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
177-182
DOI
10.4028/www.scientific.net/KEM.261-263.177
Citation
A. Mirzaee-Sisan, S. Hadidi-Moud, C. E. Truman, D. J. Smith, "The Role of Constraint and Warm Pre-Stress on Brittle Fracture in Ferritic Steels", Key Engineering Materials, Vols. 261-263, pp. 177-182, 2004
Online since
April 2004
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$32.00
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