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- Title
Effect of Uniaxial Tension on the Microstructure and Texture of High Mn Steel.
- Authors
Pramanik, Sudipta; Gazder, Azdiar A.; Saleh, Ahmed A.; Santos, Dagoberto B.; Pereloma, Elena V.
- Abstract
Cold‐rolled to 42% thickness reduction and annealed at 500, 625, and 700 °C, an Fe–17Mn–3Al–2Si–1Ni–0.06C wt% steel is subjected to uniaxial tension and characterized via digital image correlation and electron back‐scattering diffraction. The cold‐rolled and 500 °C samples return similar microstructures comprising predominantly α′‐martensite and remnant ϵ‐martensite fractions and a trace fraction of untransformed austenite (γ) before and after uniaxial tension. For the 625 and 700 °C samples, uniaxial tension results in the transformation of the initially reverted and recrystallized γ into ϵ and α′‐martensite via strain localization. The γ shows the formation of 〈111〉γ, 〈100〉γ double‐fiber texture, whereas the ϵ and α′‐martensite show the development of the {hkil}ϵ and 〈110〉α′ || ND fibers, respectively. {101¯2}〈1¯011〉ϵ extension twinning is also observed in ϵ‐martensite upon uniaxial tension. The cold‐rolled sample exhibits a mixed brittle and ductile fracture mode. The fracture of the 500 °C sample is similar to that of the cold‐rolled sample, whereas the 625 and 700 °C samples display a ductile fracture mode. Digital image correlation depicts strain localization during ϵ and α′‐martensite formation upon uniaxial tension for the 625 and 700 °C samples. 〈111〉γ, 〈100〉γ double‐fiber, {hkil}ϵand 〈110〉α′ || ND fibers formation upon uniaxial tension is noted. Mixed mode and ductile fracture for the cold‐rolled and annealed samples, respectively, is also observed.
- Subjects
MANGANESE steel; MICROSTRUCTURE; ELECTRON backscattering
- Publication
Advanced Engineering Materials, 2018, Vol 20, Issue 11, pN.PAG
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.201800258