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In situ observation of high temperature creep behavior during annealing of steel

Zhang, X. F.; Terasaki, H. and Komizo, Y. (2012). In situ observation of high temperature creep behavior during annealing of steel. Metallurgical and Materials Transactions A, 43(13) pp. 5067–5078.

DOI (Digital Object Identifier) Link: https://doi.org/10.1007/s11661-012-1348-5
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Abstract

Previous studies on creep suggested a close relationship between polycrystal grain size, substructure, and creep rate. At present, however, our understanding of the influence of polycrystal grain size, substructure, and thermal stress on creep deformation behavior seems rather insufficient, especially as there is a general lack of in situ data on structural changes during creep. In this study, the effects of thermal stress, austenite grain size, and cooling rate on slip deformations in C–Mn–Al steel during annealing were investigated systematically on the basis of in situ observations using high temperature laser scanning confocal microscopy. Finally, a kinetics model based on thermal expansion anisotropy and temperature difference was developed to explain these interesting experimental results. The in situ investigation of slip deformation during annealing greatly contributes to the understanding of high temperature creep behavior.

Item Type: Journal Item
Copyright Holders: 2012 The Minerals, Metals & Materials Society and ASM International
ISSN: 1543-1940
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 41910
Depositing User: Xinfang Zhang
Date Deposited: 11 Feb 2015 13:50
Last Modified: 04 Oct 2016 11:42
URI: http://oro.open.ac.uk/id/eprint/41910
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