Formation of Ultrafine-Grained Structures in 304L and 316L Stainless Steels by Recrystallization and Reverse Phase Transformation

Marina Odnobokova; Andrey Belyakov; Alla Kipelova; Rustam Kaibyshev

doi:10.4028/www.scientific.net/MSF.838-839.410

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HomeMaterials Science ForumMaterials Science Forum Vols. 838-839Formation of Ultrafine-Grained Structures in 304L...

Formation of Ultrafine-Grained Structures in 304L and 316L Stainless Steels by Recrystallization and Reverse Phase Transformation

Abstract:

The microstructure evolution and mechanical properties of 316L and 304L austenitic stainless steels subjected to large strain cold bar rolling and subsequent annealing were studied. The cold working was accompanied by mechanical twinning and strain-induced martensitic transformation. The latter was readily developed in 304L stainless steel. The uniform microstructures consisting of elongated austenite and martensite nanocrystallites evolved at large total strains, resulting in tensile strength above 2000 MPa in the both steels. The subsequent annealing at temperatures above 700°C was accompanied by the martensite-austenite reversion followed by recrystallization, leading to ultrafine grained austenite.

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Materials Science Forum (Volumes 838-839)

Pages:

410-415

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.838-839.410

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Online since:

January 2016

Authors:

Marina Odnobokova, Andrey Belyakov, Alla Kipelova, Rustam Kaibyshev

Keywords:

Austenitic Stainless Steel, Cold Rolling, Grain Refinement, Recrystallization

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