Analysis of deformation behavior in 3D during equal channel angular extrusion

Kim, J.K.; Kim, W.J.

doi:10.1016/j.jmatprotec.2006.03.166

Cited by 17 publications

(7 citation statements)

References 23 publications

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“…As shown in Fig.2(a), distribution of effective strain of P1-P9 is similar to study of Kim [4] , that is to say, before these points enter the corner, no strain is observed, after these points passed the corner, all of these points attain their highest effective strain. However, there is some difference between isothermal condition and non-isothermal condition, the highest effective strain (P4) during extrusion is near 1.4 (the value decreased to 1.1 at the final).…”

Section: Results Of Particle Trackingsupporting

confidence: 79%

“…Particle tracking method [4,10] is performed to analyze single pass ECAE process. For the reason of the symmetrical character of the extrusion process and saving calculation resource, half of the system is preserved for analysis and point 1-9 are set as Fig.1 shows.…”

Section: Ecae Numerical Modelmentioning

confidence: 99%

“…Researches in high temperature ECAE by finite element analysis are reported recently [4,5] . However, all of them are limited in the isothermal condition.…”

Section: Introductionmentioning

confidence: 99%

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A finite element simulation of NiTi alloy during equal channel angular extrusion

Wang

Chen

2010

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Particle tracking method is given to analyze the equal channel angular extrusion (ECAE) process of NiTi alloy in non-isothermal condition. The distribution of effective strain, effective stress, the temperature, and strain rate of selected particle tracking points is analyzed respectively. The influence of friction factor is also discussed. The experimental results show that under non-isothermal condition, distribution of strain, stress, strain rate and temperature are inconsistent on relative plane. Final result indicates that distribution of effective strain on xz plane is obviously different from those of isothermal condition; load predication reveals friction factor in this mechanism made little influence on the gross of load.

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Section: Results Of Particle Trackingsupporting

confidence: 79%

Section: Ecae Numerical Modelmentioning

confidence: 99%

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A finite element simulation of NiTi alloy during equal channel angular extrusion

Wang

Chen

2010

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…This result demonstrates the deformation inhomogeneity that exists in the billet after one pass of ECAP. Similar trends were observed in earlier research [23][24][25], in which deformation begins to take place at points near the outer and inner curves of the die, but the point near the outer curve has a lower deformation rate because it necessarily travels a longer distance.…”

Section: Equivalent Plastic Strainsupporting

confidence: 88%

Numerical Investigation of Plastic Strain Homogeneity during Equal-Channel Angular Pressing of a Cu-Zr Alloy

et al. 2021

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A three-dimensional finite element method (3D FEM) simulation was carried out using ABAQUS/Explicit software to simulate multi-pass processing by equal-channel angular pressing (ECAP) of a circular cross-sectional workpiece of a Cu-Zr alloy. The effective plastic strain distribution, the strain homogeneity and the occurrence of a steady-state zone in the workpiece were investigated during ECAP processing for up to eight passes. The simulation results show that a strain inhomogeneity was developed in ECAP after one pass due to the formation of a corner gap in the outer corner of the die. The calculations show that the average effective plastic strain and the degree of homogeneity both increase with the number of ECAP passes. Based on the coefficient of variance, a steady-state zone was identified in the middle section of the ECAP workpiece, and this was numerically evaluated as extending over a length of approximately 40 mm along the longitudinal axis for the Cu-Zr alloy.

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“…2, we can see that before these points entered the corner, no strain is observed, but when these points passed through the corner, the equivalent strains of all of these points rapidly increase to the maximum, which is similar to the study of Kim [7]. Besides, the maximum equivalent strain occurs at the inside corner of the fan-shaped area (P1).…”

Section: The Distribution Of Equivalent Strain Under Different Frictisupporting

confidence: 79%

Finite Element Analysis of Ti5553 Alloy during Equal Channel Angular Extrusion

Ma¹,

Li²,

Zhu³

2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. As different friction coefficients, extrusion speeds and extrusion temperatures have an effect on equal channel angular extrusion process of Ti5553 alloy under non-isothermal condition, 3D model had been set up to simulate the high temperature deformation behavior and particle tracking method was given to analyze the equivalent strain of Ti5553 alloy under that environment. The study shows that the maximum equivalent strain reaches 1.2 and occurs at the inside corner of the fan-shaped area. Moreover, when the friction coefficient more than 0, the equivalent strain occurs in advance, the stress of the specimen at the entrance and exit increase and the stress distribution at the corner of the fan-shaped area is more unevenly. When the extrusion speed is 25mm·s -1 , the time of the specimen generates the same equivalent strain is shorter, the stress value of the specimen decreases, and the stress distribution of the specimen is more evenly.

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Analysis of deformation behavior in 3D during equal channel angular extrusion

Cited by 17 publications

References 23 publications

A finite element simulation of NiTi alloy during equal channel angular extrusion

A finite element simulation of NiTi alloy during equal channel angular extrusion

Numerical Investigation of Plastic Strain Homogeneity during Equal-Channel Angular Pressing of a Cu-Zr Alloy

Finite Element Analysis of Ti5553 Alloy during Equal Channel Angular Extrusion

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