ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Controlled Warm Working: Possible Tool for Optimizing Stored Energy Advantage in Deformed γ-fiber (ND//‹111›)
R. KhatirkarL. A. I. KestensR. PetrovI. Samajdar
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JOURNAL FREE ACCESS

2009 Volume 49 Issue 1 Pages 78-85

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Abstract

In the present study, ultra low carbon steel samples were deformed in near plane-strain mode with different strains, strain rates and temperatures. Estimates of in-grain misorientation developments were obtained respectively for the γ-fiber (ND//‹111›) and α-fiber (RD//‹110›) oriented deformed grains. Though a general drop in in-grain misorientation was observed with increase in deformation temperature, the highest reduction of 70% showed a clear increase at the intermediate deformation temperatures. Under these condition(s), the misorientation increase in deformed γ-fiber grains was more substantial than in α-fiber grains. The phenomenon was related to the preferred appearance of grain interior strain localizations. The study brings out a clear possibility of optimizing the stored energy advantage in the deformed γ-fiber through controlled warm working.

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© 2009 by The Iron and Steel Institute of Japan
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