Texture development during cold rolling of Fe–Cr–Ni alloy-experiments and simulations

Kumar, Amit; Khatirkar, Rajesh K.; Chalapathi, Darshan; Bibhanshu, Nitish; Suwas, Satyam

doi:10.1080/14786435.2017.1322727

Cited by 16 publications

(2 citation statements)

References 64 publications

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“…These contributions, in turn, depend on SFE. A decrease in SFE promotes the development of deformation twinning followed by shear banding and, therefore, leads to a reduction of the Copper component intensity, while the fraction of Brass component increases [39,[46][47][48].…”

Section: Texture Evolutionmentioning

confidence: 99%

Grain refinement and strengthening of austenitic stainless steels during large strain cold rolling

Odnobokova

Belyakov

Kaibyshev

2018

Philosophical Magazine

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The microstructure/texture evolution and strengthening of 316 L-type and 304 L-type austenitic stainless steels during cold rolling were studied. The cold rolling was accompanied by the deformation twinning and micro-shear banding followed by the strain-induced martensitic transformation, leading to nanocrystalline microstructures consisting of flattened austenite and martensite grains. The fraction of ultrafine grains can be expressed by a modified Johnson-Mehl-Avrami-Kolmogorov equation, while inverse exponential function holds as a first approximation between the mean grain size (austenite or martensite) and the total strain. The deformation austenite was characterised by the texture components of Brass, {011}<211>, Goss, {011}<100>, and S, {123}<634>, whereas the deformation martensite exhibited a strong {223}<110> texture component along with remarkable γ-fibre, <111>∥ND, with a maximum at {111}<211>. The grain refinement during cold rolling led to substantial strengthening, which could be expressed by a summation of the austenite and martensite strengthening contributions.

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Section: Texture Evolutionmentioning

confidence: 99%

Grain refinement and strengthening of austenitic stainless steels during large strain cold rolling

Odnobokova

Belyakov

Kaibyshev

2018

Philosophical Magazine

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“…The substructure development/shear bands was reported to be observed in the austenite grains even at very low cold rolling percent. 28,29) In contrast, at high temperatures, the ferrite was softer than the austenite. 15) Initially at low deformation levels, the strain was mostly accommodated by ferrite.…”

Section: Flow Characteristicsmentioning

confidence: 99%

Strain Rate Sensitivity Behaviour of a Chrome-Nickel Austentic-Ferritic Stainless Steel and its Constitutive Modelling

et al. 2018

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In the present investigation, the plastic flow curves and work softening behaviour of a dual phase Fe-Cr-Ni alloy during hot deformation (low to intermediate temperature range, 948 K (675°C) to 1 248 K (975°C)) along with concurrent microstructural development were investigated. The flow stress increased with the increase in strain rate and decreased with the increase in deformation temperature. The single peak characteristic appearing in all the flow curves indicated that dynamic recrystallization (DRX) was the dominant softening mechanism in the later stage of deformation. The critical strain for DRX initiation was ε c = 0.632ε p and the peak strain (ε p ) were expressed through the Zener-Hollomon parameter (Z). For flow stress modelling, an Arrhenius type constitutive model was established to predict the flow stress behaviour during hot deformation. The results showed that the calculated flow curves agreed reasonably well with the experimental results. The microstructural analysis using optical microscopy indicated that all the deformed structures exhibited elongated grains similar to that of parent microstructure and some equiaxed grains (resulting from DRX in the austenite phase). The fraction of equiaxed grains (in austenite) increased with the deformation temperature. At low Z, the ferrite phase accommodates the strain and dynamic recovery was the prominent restoration process. At high Z, austenite controlled the deformation mechanism and DRX was the likely cause for microstructural refinement. The iso-strain rate sensitivity (m) contour map was used to determine the optimum regime of high temperature workability.

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Deciphering the Possible Role of Strain Path on the Evolution of Microstructure, Texture, and Magnetic Properties in a Fe-Cr-Ni Alloy

Kumar

Khatirkar

Gupta

et al. 2018

Metall Mater Trans A

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Texture development during cold rolling of Fe–Cr–Ni alloy-experiments and simulations

Cited by 16 publications

References 64 publications

Grain refinement and strengthening of austenitic stainless steels during large strain cold rolling

Grain refinement and strengthening of austenitic stainless steels during large strain cold rolling

Strain Rate Sensitivity Behaviour of a Chrome-Nickel Austentic-Ferritic Stainless Steel and its Constitutive Modelling

Deciphering the Possible Role of Strain Path on the Evolution of Microstructure, Texture, and Magnetic Properties in a Fe-Cr-Ni Alloy

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