Effect of Initial Grain Orientation on Evolution of Deformed Microstructure in Hot Compressed Ni-30Fe Alloy

Cho, Jae-Young; Inoue, Tatsuo; Yin, Fuxing; Nagai, Kotobu

doi:10.2320/matertrans.45.2960

Cited by 11 publications

(3 citation statements)

References 21 publications

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“…Cho et al reported greater advances in high angle boundaries and the subdivision of grains under the deformation with shear strain those under that without shear strain using Ni-30Fe alloy (face-centered cubic). 10) They observed microstructure was affected by the shear strain, but the texture change was not examined. Kang et al reported on the quantitative relationship between texture and misorientation, according to two deformation modes of plane strain compression and simple shear using IF steel (body-centered cubic; BCC).…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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“…If the orientation of the grain boundary is not parallel to the shear surface, it can reduce the size of the pits on the processed surface. Cho et al (2004) studied the effect of initial crystallographic orientation on the microstructure evolution of Ni-30 Fe alloy and found that the development of the deformed microstructure will be affected to a certain extent by the initial grains. Wu et al (2015) found through copper microcutting experiments that the grain orientation has a great influence on the cutting force and the formation of burrs.…”

Section: Introductionmentioning

confidence: 99%

Research on Modeling Crystallographic Texture Evolution of Al Alloy 7075

et al. 2021

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Crystallographic texture is related to the anisotropy or isotropy of material physical properties, including mechanical performance. The crystallographic effect in micromachining is more significant than that in macro-processing owing to that the depth of the cut and the grain size are in the same order. It is of great significance to model the crystallographic texture evolution induced by mechanical and thermal load during micro-machining to investigate the surface integrity and performance of the finished product. This study performed hot deformation experiments of Al alloy 7075 (AA7075) under various input parameters, including the temperature, temperature rate, stain rate, and strain, which was designed using the Taguchi method. Following that, crystallographic orientation of the samples before and after the deformation was tested using electron back-scattered diffraction (EBSD). Then, the crystallographic texture evolution was modeled with the parameters obtained by fitting a part of the experimental data. The crystallographic texture evolution of AA7075 under different levels of input parameters is studied and analyzed. Finally, the sensitivity of crystallographic orientation evolution to the process parameter is analyzed. The results indicate that these four input parameters have a significant impact on some crystallographic texture of the specimens. The proposed model is instructive in the future investigation of micromachining and microstructure evolution.

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“…The UFGM whose grain size is less than 1 lm is induced by warm-or cold-rolling process under severe plastic deformation (Cho et al, 2004;Kim et al, 2005). A refinement of microstructures of a metal caused by dislocation behaviors is closely connected with a macroscopic deformation.…”

Section: Introductionmentioning

confidence: 99%

Multiscale crystal plasticity modeling based on geometrically necessary crystal defects and simulation on fine-graining for polycrystal

Aoyagi

Shizawa

2007

International Journal of Plasticity

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Effect of Initial Grain Orientation on Evolution of Deformed Microstructure in Hot Compressed Ni-30Fe Alloy

Cited by 11 publications

References 21 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

Research on Modeling Crystallographic Texture Evolution of Al Alloy 7075

Multiscale crystal plasticity modeling based on geometrically necessary crystal defects and simulation on fine-graining for polycrystal

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