Deformation behaviour of Fe-3Si steel

Кайбышев, Р. О.; Kazakulov, I. Ya.

doi:10.1179/026708304225010415

Cited by 10 publications

(11 citation statements)

References 5 publications

(2 reference statements)

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“…There are diverse thermomechanical deformation data on steels 15,[19][20][21][22][23][24][25][26][27] and other alloys [28][29][30][31] available in the relevant technical literature, none of which is on steel grade DH36 and in conditions that simulate FSW. One publication 15 discusses the effect of temperature and strain rate on the high temperature (850-1150uC) deformation behaviour of 42CrMo medium carbon low alloy steel by hot compression testing on a Gleeble thermomechanical simulator.…”

Section: Introductionmentioning

confidence: 99%

“…There are diverse thermo-mechanical deformation data on steels 15,[19][20][21][22][23][24][25][26][27] and other alloys [28][29][30][31] C) deformation behaviour of 42CrMo medium carbon low alloy steel by hot compression testing on a Gleeble thermo-mechanical simulator. It is reported that in high temperature and low strain rate deformation conditions, flow stress curves consist of four diverse stages which are governed by two opposing phenomena, work hardening and thermally induced softening, specifically dynamic recrystallisation (DRX) and dynamic recovery (DRV).…”

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confidence: 99%

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Thermomechanical deformation behaviour of DH36 steel during friction stir welding by experimental validation and modelling

Toumpis

Galloway

Arbaoui

et al. 2014

Science and Technology of Welding and Joining

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Friction stir welding is a solid state thermo-mechanical deformation process from which the plasticisation behaviour of the stirred material can be evaluated through the study of flow stress evolution. Flow stress data also supporting the development of a local microstructural numerical model have been generated. Hot compression testing of DH36 steel has been performed at a temperature range of 700 o C1100 o C and strain rates from 10 -3 s -1 to 10 2 s -1 to study the alloys thermo-mechanical deformation behaviour in conditions which simulate the actual friction stir welding process. It has been found that the evolution of flow stress is significantly affected by the test temperature and deformation rate. The materials constitutive equation and constants have been calculated after analysis of these data. Preliminary numerical analysis results are in good agreement with experimental observations.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Thermomechanical deformation behaviour of DH36 steel during friction stir welding by experimental validation and modelling

Toumpis

Galloway

Arbaoui

et al. 2014

Science and Technology of Welding and Joining

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“…To tackle this bottleneck, a threshold stress (σ 0 ) was introduced to modify the classical Arrhenius equation. In fact, σ 0 existed once an alloy was strengthened by dispersoids [13][14][15]. As a result, the Arrhenius equation was modified by substituting an effective stress (σ − σ 0 ) [13,14], i.e.,…”

Section: Resultsmentioning

confidence: 99%

“…where A is a constant, G is the shear modulus, and Q t is the "true" activation energy. By the aid of the modification, the Arrhenius equation is ideal for modeling plastic flow behavior at whatever low or high level of stresses [13,14]. According to this equation, the estimate of σ 0 is the prerequisite for determining Q t .…”

Section: Resultsmentioning

confidence: 99%

Kinetic Analysis of High-Temperature Plastic Flow in 2.25Cr-1Mo-0.25V Steel

Luo

Niu

et al. 2019

Materials

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High-temperature plastic flow of heat-resistant 2.25Cr-1Mo-0.25V steel was investigated by hot tension (at 500–650 °C) on a Gleeble 3800 machine. The strain rate of hot tension was set as 0.001–1 s−1. The constitutive relation of the steel was modeled by the introduction of the parameters termed “true activation energy” and “threshold stress”. Then, the kinetics of high-temperature plastic flow was analyzed based on an Arrhenius equation modified by a “threshold stress”. The stress exponent of the modified equation was equal to 5. True activation energy was estimated to be 132 kJ·mol−1. According to the slip band model, the basic mechanism behind the hot deformation of the steel was considered to be dislocation climbing, which was governed by grain boundary diffusion. This model proved to be successful in its analysis of the experimental results of hot tension tests.

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“…As stated before, the availability of creep data for the alloy under investigation is minimal. Among the few available works, Kaibyshev and Kazakulov [42] analyzed steel with a composition very similar to that of the DCI matrix but with a different grain size, 6 mm versus 30 µm.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Micromechanical Modeling for Predicting Residual Stress–Strain State around Nodules in Ductile Cast Irons

Ruggiero,

Khademi

2023

Metals

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In this paper, a micromechanical model was developed to predict the residual stress–strain state that is generated around nodules of a ferritic ductile cast iron during solidification. A finite element analysis was performed on a reference volume element of the material to analyze the local strain development, having modeled both matrix and nodule as deformable bodies in contact. The behavior of the nodule was assumed linear–elastic because of the low stresses to which it is subjected during cooling. On the other hand, elasto-plastic viscous behavior was considered for the matrix, considering both the primary and secondary creep regimes. To make up for the lack of information on the physical–thermomechanical properties of the constituents, the available literature data were integrated with the results obtained from the CALPHAD methodology applied to both cast iron and the steel that constitutes its matrix. The micromechanical model was validated by comparing the resulting residual strains with experimental data available in the literature for a ferritic ductile cast iron. Then, it was used for analyzing the correlation between the solidification history and the mechanical response of cast iron in terms of the uniaxial stress–strain curve.

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Deformation behaviour of Fe-3Si steel

Cited by 10 publications

References 5 publications

Thermomechanical deformation behaviour of DH36 steel during friction stir welding by experimental validation and modelling

Thermomechanical deformation behaviour of DH36 steel during friction stir welding by experimental validation and modelling

Kinetic Analysis of High-Temperature Plastic Flow in 2.25Cr-1Mo-0.25V Steel

Micromechanical Modeling for Predicting Residual Stress–Strain State around Nodules in Ductile Cast Irons

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