Effect of Strain on Microstructural Evolution under Warm Deformation in an Ultra-Low Carbon Steel

Kang, Joo‐Hee; Inoue, Tatsuo; Torizuka, Shiro

doi:10.2320/matertrans.md200816

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…This is one of the characteristics of deformation bands induced by local lattice rotation. 12,21,22) Meanwhile, the fraction of the low angle boundary decreased significantly at the large strain of " eq ¼ 3:5. This refinement mechanism by clear boundary formation and fragmentation, accompanied by orientation rotation, is well known.…”

Section: Strain Distribution Estimated By Numerical Analysismentioning

confidence: 99%

“…[12][13][14] A test specimen with the dimensions of 18 mm Â 15 mm Â 12 mm (width) was machined from a warm rolled bar with a composition of 0.15C-0.3Si-1.5Mn (mass%). The initial microstructure of the low carbon steel is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The textural evolution in a large strain was similar to the previous results of warm deformed steels. 11,12,24,25) Finally, the rotated cube f001gh110i and the fiber became the main components in " eq ¼ 3:5. Compared to the texture in the deformed specimen in a higher temperature region (923-1123 K), the rotated cube did not grow as indicated in our previous report.…”

Section: Strain Distribution Estimated By Numerical Analysismentioning

confidence: 99%

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Effect of Shear Strain on the Microstructural Evolution of a Low Carbon Steel during Warm Deformation

Kang

Inoue²,

Torizuka³

2010

Mater. Trans.

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The microstructural evolution of a low carbon steel was investigated under two different conditions with and without shear strain, using electron backscattered diffraction (EBSD) when a uniaxial compression of 67% was applied at a warm working temperature of 773 K. The equivalent strain and shear strain imposed by the compression test were calculated quantitatively by finite element analysis (FEA). As the equivalent strain was increased without any shear strain, the texture of the and fibers was strongly developed, and the grain refinement was accelerated. However, as the shear strain was increased at the same equivalent strain, the thickness of the pancaked ferrite decreased and the texture was weakened. With increasing shear strain, a shear texture, such as h110i == TD and f110g == ND, was observed and a high angle boundary over 15 developed at the expense of low and medium angle boundaries below 15 . The shear strain accelerated the subdivision of the ferrite grain and randomized the texture.

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Section: Strain Distribution Estimated By Numerical Analysismentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Strain Distribution Estimated By Numerical Analysismentioning

confidence: 99%

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Effect of Shear Strain on the Microstructural Evolution of a Low Carbon Steel during Warm Deformation

Kang

Inoue²,

Torizuka³

2010

Mater. Trans.

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“…Grain refinement occurred in both medium carbon and low carbon alloy steels during warm deformation [ 5 , 6 , 7 ]. Ultra-fine grain microstructure also can be obtained by warm deformation of ultra-low carbon steel [ 8 , 9 ]. Continuous dynamic recrystallization (CDRX) can lead to the formation of new fine ferrite grains [ 7 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Texture Evolution in Low Carbon and Low Alloy Steel during Warm Deformation

Shu

et al. 2022

Materials

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Warm compression tests were carried out on low carbon and low alloy steel at temperatures of 600–850 °C and stain rates of 0.01–10 s−1. The evolution of microstructure and texture was studied using a scanning electron microscope and electron backscattered diffraction. The results indicated that cementite spheroidization occurred and greatly reduced at 750 °C due to a phase transformation. Dynamic recrystallization led to a transition from {112}<110> texture to {111}<112> texture. Below 800 °C, the intensity and variation of texture with deformation temperature is more significant than that above 800 °C. The contents of the {111}<110> texture and {111}<112> texture were equivalent above 800 °C, resulting in the better uniformity of γ-fiber texture. Nucleation of <110>//ND-oriented grains increased, leading to the strengthening of <110>//ND texture. Microstructure analysis revealed that the uniform and refined grains can be obtained after deformation at 800 °C and 850 °C. The texture variation reflected the fact that 800 °C was the critical value for temperature sensitivity of warm deformation. At a large strain rate, the lowest dislocation density appeared after deformation at 800 °C. Therefore, 800 °C is a suitable temperature for the warm forming application, where the investigated material is easy to deform and evolves into a uniform and refined microstructure.

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Effect of Grain Refinement on Tribological Study of Low Carbon Steel

Bhoi

Singh

Harsha

et al. 2021

Trans Indian Inst Met

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Effect of Strain on Microstructural Evolution under Warm Deformation in an Ultra-Low Carbon Steel

Cited by 5 publications

References 24 publications

Effect of Shear Strain on the Microstructural Evolution of a Low Carbon Steel during Warm Deformation

Effect of Shear Strain on the Microstructural Evolution of a Low Carbon Steel during Warm Deformation

Microstructure and Texture Evolution in Low Carbon and Low Alloy Steel during Warm Deformation

Effect of Grain Refinement on Tribological Study of Low Carbon Steel

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