[Kovove materialy - Metallic materials]
    Mon - January 25, 2021 - 15:56 No. of hits : 1227866 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 58 (2020), Issue 3

Effect of superplastic deformation on the microstructure and orientation of austenite in 3207 duplex stainless steel
LI, J., REN, X., GAO, X.
vol. 58 (2020), no. 3, pp. 195 - 202

Due to attractive strength, toughness, and corrosion resistance, duplex stainless steels are widely used in various applications. The current study performs a systematic investigation on the microstructure and orientation of austenite in DSS during superplastic deformation. Results show that austenite grains became uniform, equiaxed, coarse, and some were elongated. The superplastic deformation could weaken textures in Gauss {011} ⟨100⟩ Brass {011} ⟨211⟩ and Copper {211} ⟨111⟩ orientations. Dynamic recovery followed by continuous dynamic recrystallization occurred in austenite during superplastic deformation. Concentrated strain in softer ferrite phase leads to a slightly lower dislocation density in austenite. This paper provides new insight into the deformation mechanism of the austenite matrix during hot deformation in duplex stainless steels.

Key words
duplex stainless steel, austenite, superplastic deformation, microstructure, orientation

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

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