Abstract
The deformation microstructures and mechanical properties of 304L and 316L stainless steels subjected to caliber cold rolling were studied. The steels were processed by caliber rolling to various total strains from 0.4 to 4.0 at ambient temperature. The structural changes were associated with the development of deformation twinning and partial martensitic transformation. The latter was frequently observed at deformation microbands and deformation twins. The 304L steel samples exhibited faster increase in the fraction of strain-induced martensite during cold rolling as compared to the 316L steel samples. At large strains, the deformation microstructures in the both steels consisted of mixture of highly elongated martensite and austenite crystallites. The cold rolling was accompanied by an increase in the dislocation densities and significant strengthening of the samples. After rolling to a total strain of 4, the yield strengths of 2115 and 1825 MPa were attained in the 304L and 316L steel samples, respectively.
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Acknowledgements
The authors gratefully acknowledge the financial support from the Ministry of Education and Science, Russia (project № 11.3719.2017/PCh).
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Belyakov, A., Odnobokova, M., Kipelova, A., Tsuzaki, K., Kaibyshev, R. (2018). Microstructural Evolution and Strengthening of Stainless Steels During Cold Rolling. In: Muruganant, M., Chirazi, A., Raj, B. (eds) Frontiers in Materials Processing, Applications, Research and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-10-4819-7_29
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DOI: https://doi.org/10.1007/978-981-10-4819-7_29
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