Effects of ausforming strain on bainite transformation in nanostructured bainite steel

Hong-liang Fan; Ai-min Zhao; Qing-chun Li; Hui Guo; Jian-guo He

doi:10.1007/s12613-017-1404-7

Volume 24 Issue 3

Mar. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(3): 264-270

Hong-liang Fan, Ai-min Zhao, Qing-chun Li, Hui Guo, and Jian-guo He, Effects of ausforming strain on bainite transformation in nanostructured bainite steel, Int. J. Miner. Metall. Mater., 24(2017), No. 3, pp. 264-270. https://doi.org/10.1007/s12613-017-1404-7

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Hong-liang Fan, Ai-min Zhao, Qing-chun Li, Hui Guo, and Jian-guo He, Effects of ausforming strain on bainite transformation in nanostructured bainite steel, Int. J. Miner. Metall. Mater., 24(2017), No. 3, pp. 264-270. https://doi.org/10.1007/s12613-017-1404-7

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Research Article

Effects of ausforming strain on bainite transformation in nanostructured bainite steel

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Corresponding author:
Ai-min Zhao E-mail: aimin.zhao@ustb.edu.cn
Received: 13 July 2016; Revised: 20 September 2016; Accepted: 22 September 2016

Abstract

Abstract

The effects of ausforming strain on bainite transformation in high-carbon low-alloy nanobainite steel were investigated using a Gleeble 3500 thermomechanical simulator machine. The bainite transformation speed at 300℃ was found to be accelerated by ausforming at 300, 600, and 700℃ under applied strains ranging from 10% to 50% followed by isothermal transformation at 300℃. The ausformed bainite volume fraction varied with the ausforming strain because of the mechanical stabilization of the deformed austenite. Ausforming at low temperatures not only enhanced the bainite ferrite volume fraction but also refined the microstructure substantially. Although the amount of bainite ferrite might have been reduced with increasing strain, the microstructures were refined by ausforming.
- phase transformations;
- kinetics;
- bainite steels;
- nanostructured materials, ausforming

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References

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