Application of Torsion Test for Determination of Rheological Properties of 5019 Aluminium Alloy

Laber, K.; Kawałek, A.; Sawicki, S.; Dyja, H.; Borowski, Jacek; Leśniak, D.; Jurczak, H.

doi:10.4028/www.scientific.net/kem.682.356

Cited by 11 publications

(7 citation statements)

References 6 publications

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“…In paper [7] it is shown that existing methods of testing specimens by torsion, such as [8][9][10][11][12][13], do not allow to study the rheological properties of steels and alloys sensitive to the strain rate, in the hot state for example. In order to ensure the reliability of the obtained data on the strain resistance with the use of torsion tests,…”

Section: The Torsion Testing Methods With Variable Grip's Accelerationmentioning

confidence: 99%

Computer Simulation of the Torsion Testing Method with Variable Grip’s Acceleration

Mikhail¹,

Pavlov²

2019

KEG

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Section: The Torsion Testing Methods With Variable Grip's Accelerationmentioning

confidence: 99%

Computer Simulation of the Torsion Testing Method with Variable Grip’s Acceleration

Mikhail¹,

Pavlov²

2019

KEG

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“…where φ is angle of twist of the sample, equal to the angle of rotation of the grippers of the testing machine, l is length of the working cylindrical part of the sample. Known works in which a working part of the specimen is formed as a recess along the radius [16]. It is asserted that when using such samples, the drift phenomenon of the section with maximum deformation is absent and during deformation up to the moment of sample destruction the maximum deformation is localized in the cross section of the neck with the smallest diameter.…”

Section: Methods For Determining the Hardening Curves By The Torsionmentioning

confidence: 99%

Examination of Hardening Curves Definition Methods in Torsion Test

Erpalov

Kungurov

2018

SSP

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Torsion tests allow studying the rheological properties of materials over a wide range of strain and strain rate values, as well as temperature. A key moment in construction of hardening curves is the interpretation of experimental data, which are usually the torque – angle of twist curves. However, there is a number of independent methods to obtain interpretation of experimental data. In addition, there is no single approach to determining the degree of equivalent strain in torsion test. The aim of this paper is to review existing hardening curves definition methods in torsion test and to examine them with the use of finite element modelling.

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“…При этом деформирование рассматривалось как квазистатическое, несмотря на зависимость деформационной кривой от скорости воздействия. Наличие эффекта зуба текучести для металлов наблюдается на скоростях деформации порядка 10 2 −10 3 s −1 [22,23], а также на скоростях деформации 10 −2 −10 1 s −1 [24][25][26]. На основе кинетического варианта модели релаксационной пластичности максвелловского типа [3,4] в работе [27] для меди, кадмия и стали были спрогнозированы динамические эффекты, в том числе эффект зуба текучести, наблюдаемые на скоростях деформации 10 −5 −10 −2 s −1 .…”

Section: Introductionunclassified

Моделирование Временных Эффектов Необратимого Деформирования На Основе Релаксационной Модели Пластичности

Селютина¹,

Петров²

2019

Физика Твердого Тела

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The analysis of plastic deformation of metals and polymethylmethacrylate under dynamic loading is carried out using a relaxation model of plastic deformation. The invariance of the parameters of the relaxation model of plasticity to the strain history allows us to obtain any set of deformation curves from a united viewpoint, both monotonic, with varying yield strength, and non-monotonic, with emerging and varying yield drop, as it is observed in experiments. The increase of the yield strength of high-strength 2.3Ni-1.3Cr steel together with the hardening effect both under high-rate and slow deformation is also modeled on the basis of the relaxation model. Using DP600 steel and nanocrystalline nickel as an example it is shown that the relaxation model of plasticity allows one to predict a smooth transition to the plastic deformation stage at slow quasi-static effects of ~ 10–3 s – 1, and also the appearance of a yield drop effect at strain rates of 500–6000 s –1. It is also shown that the developed approach allows one to simulate similar effects under high-rate deformation of polymethylmethacrylate. Thus, it was demonstrated using specific materials as an example that it is possible to effectively predict the deformation dependencies of the materials studied in a wide range of strain rates of 10-4-104 s-1 based on the parameters of the relaxation model of irreversible deformations.

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Application of Torsion Test for Determination of Rheological Properties of 5019 Aluminium Alloy

Cited by 11 publications

References 6 publications

Computer Simulation of the Torsion Testing Method with Variable Grip’s Acceleration

Computer Simulation of the Torsion Testing Method with Variable Grip’s Acceleration

Examination of Hardening Curves Definition Methods in Torsion Test

Моделирование Временных Эффектов Необратимого Деформирования На Основе Релаксационной Модели Пластичности

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