Effect of Twinning on Microstructural Evolution During Dynamic Recrystallisation of Hot Deformed As-Cast Austenitic Stainless Steel

Guria, Ankan; Mandal, G. K.; Hodgson, Peter; Beynon, John H.; Chowdhury, Sandip Ghosh

doi:10.1007/s11661-015-3078-y

Cited by 9 publications

(8 citation statements)

References 30 publications

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“…While the above results contradict reports of a weak C oriented DRX texture during the hot plane strain compression of Ni-30Fe alloy [47][48][49], they are in agreement with Guria et al [28] who also observed a pronounced C oriented DRX texture after the plane strain compression of 316 stainless steel.…”

Section: Micro-texture Evolution With Dynamic Recrystallisationsupporting

confidence: 89%

See 1 more Smart Citation

Microstructure and micro-texture evolution during the dynamic recrystallisation of a Ni-30Fe-Nb-C model alloy

Mannan

Saleh

Gazder

et al. 2016

Journal of Alloys and Compounds

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Pereloma, E. V. (2016). Microstructure and micro-texture evolution during the dynamic recrystallisation of a Ni-30Fe-Nb-C model alloy. Journal of Alloys and Compounds, Microstructure and micro-texture evolution during the dynamic recrystallisation of a Ni-30Fe-Nb-C model alloy AbstractThe evolution of microstructure and micro-texture during discontinuous dynamic recrystallisation of an austenitic Ni-30Fe-Nb-C model alloy subjected to interrupted plane strain compression at strains (ε) of 0.23, 0.35, 0.68, 0.85 and 1.2 was investigated using electron backscattering diffraction and transmission electron microscopy. Throughout the strain range, the majority of dynamic recrystallisation events comprised nucleation in necklace-like arrangements located at and along grain boundaries via bulging. At ε ≥ 0.68, discrete nucleation events were also observed within grain interiors. Grain growth during dynamic recrystallisation is characteristic of strain induced boundary migration. The initial texture comprised Cube-RD ({013}〈100〉), Cube-ND ({001}〈310〉) and Cube ({001}〈100〉) orientations. Up to ε ≤ 0.35, the unrecrystallised grain fractions comprised the Brass ({110}〈112〉) or Copper ({112}〈111〉) orientations and an intensity spread near Rotated Goss ({011}〈011〉). Between 0.68 ≤ ε ≤ 1.2, the texture of the unrecrystallised grain fractions was similar to that of the recrystallised grains throughout the strain range; both of which are dominated by the Cube orientation. The dominance of the Cube orientation in the secondary deformed and recrystallised grains can be ascribed to its low stored energy and orientation stability.

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Section: Micro-texture Evolution With Dynamic Recrystallisationsupporting

confidence: 89%

“…Hasegawa et al [27] ascribed this phenomenon to the high frequency of annealing twins. Contrarily, Guria et al [28] reported a strong cube DRX texture in 316 stainless steel subjected to plane strain compression at 950-1100 °C and attributed this to multiple annealing twins and grain rotation during deformation.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and micro-texture evolution during the dynamic recrystallisation of a Ni-30Fe-Nb-C model alloy

Mannan

Saleh

Gazder

et al. 2016

Journal of Alloys and Compounds

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“…Those are sharp peaks against small misorientations below 10° and large misorientations of 60°. The former represents low‐angle dislocation subboundaries, which evolve in work‐hardened grains, and the latter corresponds to annealing twins that frequently develop in growing DRX grains . The rest of misorientations between these two peaks appears with relatively small fractions and looks like random misorientation distribution (the latter is indicated by solid line in Figure and ).…”

Section: Resultsmentioning

confidence: 96%

“…The former represents low-angle dislocation subboundaries, which evolve in work-hardened grains, and the latter corresponds to annealing twins that frequently develop in growing DRX grains. [34,35] The rest of misorientations between these two peaks appears with relatively small fractions and looks like random misorientation distribution (the latter is indicated by solid line in Figure 8 and 9). Namely, their fraction gradually increases as misorientation increases to 45 and then decreases with a further increase in misorientation.…”

Section: Deformation Microstructuresmentioning

confidence: 88%

Hot Deformation and Dynamic Recrystallization of 18%Mn Twinning‐Induced Plasticity Steels

et al. 2020

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The deformation behavior of 18%Mn twinning‐induced plasticity (TWIP) steels with 0.4%C or 0.6%C is studied by means of isothermal compression tests in the temperature range of 973–1373 K at the strain rates of 10−3–10−1 s−1. The hot working is accompanied by the development of discontinuous dynamic recrystallization (DRX), which is commonly advanced by an increase in deformation temperature and/or a decrease in strain rate. A decrease in the carbon content promotes the DRX development, though the flow stresses scarcely depend on the carbon content. The change in the DRX kinetics results in the specific distributions of the grain orientation spread (GOS) among the DRX grains, depending on deformation conditions. The maximal fraction of grains with small GOS below 1° corresponding to rapid DRX development is observed at certain temperature/strain rate, although the DRX fraction increases with a decrease in temperature‐compensated strain rate and can be related to the fraction of grains with GOS below 4°. The texture of DRX grains is also determined by the orientations of grains with GOS below 4°. The grain boundary mobility for the DRX grain growth is characterized by an activation energy close to that for grain boundary diffusion.

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“…The results show that the flow stress is sensitive to strain, strain rate, and deformation temperature. In addition, studies have investigated the dynamic recrystallization behavior of superalloys during hot deformation [26,27,28,29,30,31,32,33]. Dynamic recrystallization occurs during the hot-working of a metallic material with low-to-medium stacking–fault energy.…”

Section: Introductionmentioning

confidence: 99%

Study of the Dynamic Recrystallization Process of the Inconel625 Alloy at a High Strain Rate

Jia

Gao

Ji³

et al. 2019

Materials

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High-temperature compression and electron backscatter diffraction (EBSD) techniques were used in a systematic investigation of the dynamic recrystallization (DRX) behavior and texture evolution of the Inconel625 alloy. The true stress–true strain curves and the constitutive equation of Inconel625 were obtained at temperatures ranging from 900 to 1200 °C and strain rates of 10, 1, 0.1, and 0.01 s−1. The adiabatic heating effect was observed during the hot compression process. At a high strain rate, as the temperature increased, the grains initially refined and then grew, and the proportion of high-angle grain boundaries increased. The volume fraction of the dynamic recrystallization increased. Most of the grains were randomly distributed and the proportion of recrystallized texture components first increased and then decreased. Complete dynamic recrystallization occurred at 1100 °C, where the recrystallized volume fraction and the random distribution ratios of grains reached a maximum. This study indicated that the dynamic recrystallization mechanism of the Inconel625 alloy at a high strain rate included continuous dynamic recrystallization with subgrain merging and rotation, and discontinuous dynamic recrystallization with bulging grain boundary induced by twinning. The latter mechanism was less dominant.

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Effect of Twinning on Microstructural Evolution During Dynamic Recrystallisation of Hot Deformed As-Cast Austenitic Stainless Steel

Cited by 9 publications

References 30 publications

Microstructure and micro-texture evolution during the dynamic recrystallisation of a Ni-30Fe-Nb-C model alloy

Microstructure and micro-texture evolution during the dynamic recrystallisation of a Ni-30Fe-Nb-C model alloy

Hot Deformation and Dynamic Recrystallization of 18%Mn Twinning‐Induced Plasticity Steels

Study of the Dynamic Recrystallization Process of the Inconel625 Alloy at a High Strain Rate

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