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Texture Invariant Annealing in Severely Deformed Steel

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Abstract:

This paper showed an example of the phenomena that a strong deformed texture does not change after the annealing process in steels. An Fe – 22%Cr – 3%Ni ferritic stainless steel was processed by bar rolling/swaging to a total strain of 4.4 at an ambient temperature, and its annealing behaviour was studied in a temperature range of 400 ~ 700oC. The deformed sample showed a grain size of 200nm, a fraction of high-angle boundary (HAB) of about 0.6, and a strong fiber texture of <110>{uvw}. This texture showed very little change after annealing which was characterised by the development of continuous recrystallization involving recovery processes and followed by a normal grain growth. On the other hand, by annealing a sample that was deformed to total strain of 2.0 containing rather fine grains (270nm) but without a large enough fraction of HAB (0.3), a discontinuous recrystallization took place, and its deformed texture changed considerably.

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Periodical:

Materials Science Forum (Volumes 558-559)

Pages:

101-106

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.558-559.101

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Online since:

October 2007

Authors:

Kaneaki Tsuzaki, Andrey Belyakov, Fu Xing Yin

Keywords:

Ferritic Stainless Steel (FSS), Recrystallization Mechanisms, Severe Deformation, Texture, Ultrafine Grained

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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