Effect of boundary conditions on the evolution of lattice strains in a polycrystalline austenitic stainless steel

Y. Q. Wang*, S. Hossain, S. Kabra, Shu Yan Zhang, D. J. Smith, C. E. Truman

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

9 Citations (Scopus)
236 Downloads (Pure)

Abstract

The effect of boundary conditions (constant load, constant strain and elastic follow-up) on lattice strain evolution during creep in a polycrystalline austenitic stainless steel was studied using in situ neutron diffraction at 550 °C. The lattice strains were found to remain constant under constant load control. However, under constant strain and elastic follow-up control, the lattice strains relaxed the most in the elastically softest lattice plane {200} and the least in the elastically stiffest lattice plane {111}. The intergranular stresses created between different grain families were constant during creep tests irrespective of the boundary conditions with the initial applied stresses of 250 MPa.

Original languageEnglish
Pages (from-to)7929-7936
Number of pages8
JournalJournal of Materials Science
Volume52
Issue number13
Early online date17 Mar 2017
DOIs
Publication statusPublished - 1 Jul 2017

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