Deformation lagging characteristics of IF steel disks in the plastic deformation process of high pressure torsion

Song, Yuepeng; Zhang, ZiHan; Gao, Dongsheng; Chen, Miao-miao; Li, Fade; Kim, Hyoung Seop

doi:10.1360/n092017-00278

Cited by 1 publication

(3 citation statements)

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“…This also indicates the conclusion that deformation lagging characteristics of IF steel disks are in the early torsion stage of HPT [12]. The hardness values are agreed with effective strain value Hence, the reliability of this computer simulation is verified.…”

Section: Figure IV Hardness Distribution Of Disks (A) Effective Strasupporting

confidence: 75%

“…It has been verified as a currently accepted rule that heterogeneous plastic deformation characteristics occurred in compression stage of HPT process [7,8,[10][11][12]. And parameter like the effects of pressure, turns and friction on torsion stage during the HPT process have been focused.…”

Section: Introductionmentioning

confidence: 99%

“…And parameter like the effects of pressure, turns and friction on torsion stage during the HPT process have been focused. Investigation indicates that the parameters especially the friction coefficient have great influence on the heterogeneous plastic deformation characteristics during the HPT process [6,[8][9][10][11][12]. However, it should be noted that, as to the different section of the HPT-processed IF disks, the effects of friction on heterogeneous plastic deformation characteristics are not reported all over the world.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Friction on Heterogeneous Deformation Characteristics of Interstitial-free Steels during the Torsion Stage of High Pressure Torsion

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et al. 2018

Proceedings of the 2018 3rd International Conference on Control, Automation and Artificial Intelligence (CAAI 2018)

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The heterogeneous plastic deformation characteristics of HPT processed Interstitial-free steels (IF-steels) and the effects of friction coefficient on heterogeneous plastic deformation characteristics were investigated through the effective strain distribution on the transversal plane of HTP disks. Using DEFORM-3D finite analysis software, the simulation results were obtained firstly, verified by experimental approaches. The deformation characteristic is remarkably heterogeneous in radial and axial direction on the transversal plane of HPT-processed IF steel samples. Along the radial direction, the low value of the effective strain exists in the central position, high value exists in the edge, correspondingly. Along the axial direction, the value of the bottom surface is significantly higher than other surfaces. In addition, friction coefficient plays a significantly role in early torsion stage. More and more heterogeneous plastic deformation characteristics are exhibited following the friction coefficient increase. The experimental results strongly support the simulation conclusions.

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Section: Figure IV Hardness Distribution Of Disks (A) Effective Strasupporting

confidence: 75%