EBSD characterization of cryogenically rolled type 321 austenitic stainless steel

Korznikova, Galia and Mironov, Sergey and Konkova, Tatyana and Aletdinov, Ainur and Zaripova, Rida and Myshlyaev, Michail and Lee Semiatin, Sheldon (2018) EBSD characterization of cryogenically rolled type 321 austenitic stainless steel. Metallurgical and Materials Transactions A, 49 (12). pp. 6325-6336. ISSN 1073-5623

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    Abstract

    Electron backscatter diffraction was applied to investigate microstructure evolution during cryogenic rolling of type 321 metastable austenitic stainless steel. As expected, rolling promoted deformation-induced martensitic transformation which developed preferentially in deformation bands. Because a large fraction of the imposed strain was accommodated by deformation banding, grain refinement in the parent austenite phase was minimal. The martensitic transformation was found to follow a general orientation relationship, {111}γ||{0001}ε||{110}α′ and 〈110〉γ||〈11-20〉ε||〈111〉α′, and was characterized by noticeable variant selection.