Finite element analysis of high pressure torsion processing

Kim, Hyoung Seop

doi:10.1016/s0924-0136(01)00709-9

Cited by 66 publications

(24 citation statements)

References 12 publications

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“…Significant heterogeneity was found and strong shear strain localization near the contact surface between the sample and the anvil was quantified. The effects of the elastic deformation of the anvil and the sample on the process were studied in [9]. The effect of friction, the thickness-to-diameter ratio of the specimen, and the rheology of the material on the stress-strain state of the sample during semi-constrained HPT were examined in [10,11].…”

Section: Introductionmentioning

confidence: 99%

Modeling strain and density distributions during high-pressure torsion of pre-compacted powder materials

Kulagin

Zhao

Beygelzimer

et al. 2016

Materials Research Letters

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It is shown by finite element modeling that under high-pressure torsion of water-atomized pure iron powder a zone with high shear strain and high density develops first in a layer adjacent to the moving anvil. The finite element simulation results and an analytical calculation using the minimum plastic energy extremum principle both show that with further deformation the compacted zone extends progressively in the radial and axial directions throughout the specimen. IMPACT STATEMENTThe strain non-uniformities that appear during compaction of a metallic powder by high pressure torsion can be properly modeled and the results can be used for material processing. ARTICLE HISTORY

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Section: Introductionmentioning

confidence: 99%

Modeling strain and density distributions during high-pressure torsion of pre-compacted powder materials

Kulagin

Zhao

Beygelzimer

et al. 2016

Materials Research Letters

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“…A few of the other SPD processes are reviewed below: a) High Pressure Torsion (HPT) Severe plastic deformation by high pressure torsion involves in the deformation of discs by pure shear between two anvils in which one anvil rotates against the other anvil holding the material as shown in Figure 2.5 [9,37]. This method is limited to small discs.…”

Section: Other Spd Processesmentioning

confidence: 99%

“…The significant feature of these processes is that the external dimensions of the work-piece do not change significantly during the processing. Examples of these methods include equal channel angular extrusion or pressing (ECAE or ECAP) [3], high pressure torsion (HPT) [4], twist extrusion (TE) [5], friction stir processing (FSP) [6], and multi directional forging (MDF), also known as multiaxial compression/forging (MAC/F) [7]. In addition, there are several methods of producing UFG sheet metals, such as accumulative roll bonding (ARB) [8] and repeated corrugation and straightening (RCS) [9].…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

Continuous Severe Plastic Deformation Processing of Aluminum Alloys

Srinivasan¹,

Chaudhury²,

Cherukuri³

et al. 2006

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“…Finite-element modeling (FEM) analysis has been used to study the evolution of plastic deformation in metals under HPT: alloys investigated include the magnesium alloy AZ31 [8] and copper [9]. In addition, similar phenomena related to WEA formation have been reported in steels by using HPT [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Simulation Studies of Strength and Fracture Behaviors of Wind Turbine Bearing Steel Processed by High Pressure Torsion

et al. 2016

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White structure flaking (WSF) has been found to be one of the failure modes in bearing steels under rolling contacts through the formation of cracks associated with a microstructural change called white etching area (WEA). In the present research, the effects of the high-pressure torsion (HPT) process on the microstructure and mechanical properties of an AISI 52100 alloy are studied. An annealed AISI 52100 was subjected to high-pressure torsion at room temperature under a pressure of up to~6 GPa for up to three turns. Finite-element modeling (FEM) was used to simulate the process under high-pressure torsion and quasi-constrained conditions to reveal the material property changes occurring in HPT. Scanning electron microscopy and microhardness testing after processing were used to investigate the microstructural and mechanical property evolution of the steel. Strain induced microstructural transformations occur and affect the mechanical properties in a similar way to the well-known white etching area (WEA) found beneath the surface of wind turbine bearings. Here, HPT is used to study the feasibility of creating microstructural changes that are similar to WEA. This paper presents the preliminary results of using HPT to produce WEAs.

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Finite element analysis of high pressure torsion processing

Cited by 66 publications

References 12 publications

Modeling strain and density distributions during high-pressure torsion of pre-compacted powder materials

Modeling strain and density distributions during high-pressure torsion of pre-compacted powder materials

Continuous Severe Plastic Deformation Processing of Aluminum Alloys

Experimental and Simulation Studies of Strength and Fracture Behaviors of Wind Turbine Bearing Steel Processed by High Pressure Torsion

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