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Analysis of the methods to calculate austenite static recrystallization volume fraction

Published online by Cambridge University Press:  13 June 2016

Zhao Baochun ,
Li Guiyan ,
Yan Pingyuan  and
Huang Lei
Zhao Baochun*
Affiliation:
Technology Center of AnGang Steel Company Ltd., Anshan, Liaoning 114001, China
Li Guiyan
Affiliation:
Technology Center of AnGang Steel Company Ltd., Anshan, Liaoning 114001, China
Yan Pingyuan
Affiliation:
Technology Center of AnGang Steel Company Ltd., Anshan, Liaoning 114001, China
Huang Lei
Affiliation:
Technology Center of AnGang Steel Company Ltd., Anshan, Liaoning 114001, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Double deformation technique is often used to study static recrystallization (SRX) behavior of materials, and SRX volume fraction can be calculated by the analysis of the stress–strain curve from this technique. The suggested methods to analyze the curve are different, which may lead to different results or even large deviation. In the present research, the methods were discussed based on the stress–strain curves from double deformation compression tests. The results showed that 2% offset method agrees well with 5% total strain method and they can give a better evaluation of SRX volume fraction for the tested steel in the absence of precipitates. While the results from 2% offset or 5% total strain method deviate from the ones from area measurement method when precipitation occurs. Therefore, area measurement method is more suitable when precipitates play a role in SRX process. However, the strain should be large enough to perform this method.

Keywords

static recrystallization fractiondouble deformationanalysis methodlow carbon microalloyed steel
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 14 , 28 July 2016 , pp. 2097 - 2104
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Copyright
Copyright © Materials Research Society 2016 

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Footnotes

Contributing Editor: Yang-T. Cheng

References

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