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Journal of Materials Science
Published in: Journal of Materials Science 17/2015

01-09-2015 | Original Paper

Internal strains between grains during creep deformation of an austenitic stainless steel

Authors: B. Chen, J. N. Hu, Y. Q. Wang, S. Kabra, A. C. F. Cocks, D. J. Smith, P. E. J. Flewitt

Published in: Journal of Materials Science | Issue 17/2015

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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.
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Footnotes
1
The deviation from linearity results is not shown in this short communication.
 
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Metadata
Title
Internal strains between grains during creep deformation of an austenitic stainless steel
Authors
B. Chen
J. N. Hu
Y. Q. Wang
S. Kabra
A. C. F. Cocks
D. J. Smith
P. E. J. Flewitt
Publication date
01-09-2015
Publisher
Springer US
Published in
Journal of Materials Science / Issue 17/2015
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-015-9128-4

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