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

Research output: Contribution to journalArticle

  • Y. Q. Wang
  • S. Hossain
  • S. Kabra
  • Shu Yan Zhang
  • D. J. Smith
  • C. E. Truman
Original languageEnglish
Pages (from-to)7929-7936
Number of pages8
JournalJournal of Materials Science
Volume52
Issue number13
Early online date17 Mar 2017
DOIs
DateAccepted/In press - 11 Mar 2017
DateE-pub ahead of print - 17 Mar 2017
DatePublished (current) - 1 Jul 2017

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.

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    Rights statement: This is the final published version of the article (version of record). It first appeared online via Springer at https://doi.org/10.1007/s10853-017-0997-6 . Please refer to any applicable terms of use of the publisher.

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