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Title: Internal strains between grains during creep deformation of an austenitic stainless steel
Authors: Chen, B
Hu, JN
Wang, YQ
Kabra, S
Cocks, ACF
Smith, DJ
Flewitt, PEJ
First Published: 3-Jun-2015
Publisher: Springer Verlag (Germany)
Citation: Journal of Materials Science, 2015, 50 (17), pp. 5809-5816
Abstract: Internal strains that develop between grains during creep of an austenitic stainless steel were measured using in situ neutron diffraction. The secondary creep pre-strained test specimens were considered. Measurements were undertaken before, during and post creep deformation at 550 °C. There was no measurable change of internal strains between grains during in situ creep for 4 h at 550 °C. In addition, the effect of increasing/reducing temperatures in a range from 470 to 550 °C on the internal strains was measured and interpreted with respect to contributions from thermal expansion/contraction. No further internal misfit strains between grains were created when specimen crept during the dwell time at 530, 510, 490 and 470 °C. Results are discussed with respect to (i) the general structure of self-consistent models and (ii) the optimised use of neutron sources for creep studies.
DOI Link: 10.1007/s10853-015-9128-4
ISSN: 0022-2461
eISSN: 1573-4803
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2015 Springer Verlag (Germany). Deposited with reference to the publisher’s open access archiving policy. (
Appears in Collections:Published Articles, Dept. of Engineering

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