Conclusions
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1.
It was found that a thermomechanical treatment increased the ductility and strength of steel at −195°C.
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2.
The best values of strength and ductility obtained after such a treatment at 900°C. Higher rolling temperatures reduced these properties.
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3.
The improvement in properties is caused by the increased brittle strength of the austenite grain boundaries.
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References
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Sokolkov, E.N., Petrova, S.N. & Chuprakova, N.P. Effect of plastic deformation in the austenitic state on the properties of alloy constructional steels. Met Sci Heat Treat 3, 192–194 (1961). https://doi.org/10.1007/BF00812974
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DOI: https://doi.org/10.1007/BF00812974