Energy dissipation and storage in iron under plastic deformation (experimental study and numerical simulation)

Kostina, A.; Iziumova, A.; Plekhov, O.

doi:10.3221/igf-esis.27.04

Cited by 7 publications

(6 citation statements)

References 11 publications

(12 reference statements)

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“…Thus it was attributed to the thermoelastic effect. In work [19] also a temperature decrease preceding the intense increase just before the specimens rupture was registered, however, not discussed. Such an effect was also observed by Hyll et al [22] in the process of stretching sack paper samples with a strain rate equal to 10 −3 s −1 .…”

Section: Discussionmentioning

confidence: 95%

“…However, the use of high-speed thermographic cameras shed new light on this problem. Primarily a temperature decrease was observed during stretching of Armco iron [18,19] and some metallic alloys [20,21] with strain rates ranging from 10 −4 to 10 −1 s −1 in the regime of elastic deformation. Thus it was attributed to the thermoelastic effect.…”

Section: Discussionmentioning

confidence: 99%

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Thermographic analysis of dual-phase steel under quasi-static and dynamic tension

Kołodziej¹,

Weber²,

Czulak³

et al. 2020

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The work presents a study on temperature changes during tensile tests of high-strength dual-phase steel, performed with different strain rates,ε1 = 3.3 × 10 −3 s −1 andε2 = 33 s −1 , at room temperature, making use of a high-resolution thermographic camera. It has been shown that with increasing strain rate the ultimate tensile strength grows, from ca. 1305 to ca. 1326 MPa, whereby the average strain values decrease from ca. 7.9 to ca. 7.2 %. The temperature of the specimens stretched with the lower strain rate grows during the tensile test by about 32 • C, whereas, in the case of the specimens stretched with a higher strain rate, by about 98 • C. Moreover, the precise analysis of the temperature profiles, registered with the thermographic camera, indicated a significant temperature drop preceding the rupture of specimens by about 5 % of the maximum temperature value. K e y w o r d s : thermographic measurements, infrared camera, tensile test, high-speed deformation, dual-phase steels

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Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Thermographic analysis of dual-phase steel under quasi-static and dynamic tension

Kołodziej¹,

Weber²,

Czulak³

et al. 2020

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“…The total energy spent on deforming an elastic-plastic material is equal to the work undertaken on elastic (reversible) deformation and permanent (plastic) deformation. Moreover, the energy consumed on plastic deformation is divided into heat dissipated in the forming process and energy stored in the material [42][43][44]. The evolution of the microstructure during deformation depends on the type of material, the initial temperature and the loading situation [45,46].…”

Section: Experimental Investigationsmentioning

confidence: 99%

Full-Field Temperature Measurement of Stainless Steel Specimens Subjected to Uniaxial Tensile Loading at Various Strain Rates

et al. 2021

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This article presents a study on the effect of strain rate, specimen orientation, and plastic strain on the value and distribution of the temperature of dog-bone 1 mm-thick specimens during their deformation in uniaxial tensile tests. Full-field image correlation and infrared thermography techniques were used. A titanium-stabilised austenitic 321 stainless steel was used as test materials. The dog-bone specimens used for uniaxial tensile tests were cut along the sheet metal rolling direction and three strain rates were considered: 4 × 10−3 s−1, 8 × 10−3 s−1 and 16 × 10−3 s−1. It was found that increasing the strain rate resulted in the intensification of heat generation. High-quality regression models (Ra > 0.9) developed for the austenitic 321 steel revealed that sample orientation does not play a significant role in the heat generation when the sample is plastically deformed. It was found that at the moment of formation of a necking at the highest strain rate, the maximum sample temperature increased more than four times compared to the initial temperature. A synergistic effect of the strain hardening exponent and yield stress revealed that heat is generated more rapidly towards small values of strain hardening exponent and yield stress.

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“…Such investigations allow determining an energy part converted into heat as well as estimating stored energy through the rearrangement of crystal structure. In a number of papers [1][2][3][4] the studies of evolved heat variation relative to plastic deformation energy was subjected. Dissipated energy in shape-memory alloys Cu-Zn-Al, Ni-Ti, Cu-Al-Be, Ti-4.2Al-1.6Mn was studied under cyclic loading [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The variation of storage and heat energy in AISI 304 under plastic deformation

Lunev

Nadezhkin

2019

THERM SCI

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The results of the analysis of heat and stored energy variation in stainless steel AISI 304 under tension are presented in this work. The distributions of temperature and strain on the surface of specimens have been obtained by using infrared thermography and the digital image correlation of laser speckle patterns techniques. It has been found that the plastic flow diagram consists of two linear stages. The first one is characterized by the monotonic growth in evolved heat. At the second linear stage the portion of stored energy rises, that is connected with the growth in the rate of martensitic transformations. A temperature fluctuation in the center of a specimen at the true strain over 0.4 appears due to the motion of localized strain bands, which are also the sources of heat.

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Energy dissipation and storage in iron under plastic deformation (experimental study and numerical simulation)

Cited by 7 publications

References 11 publications

Thermographic analysis of dual-phase steel under quasi-static and dynamic tension

Thermographic analysis of dual-phase steel under quasi-static and dynamic tension

Full-Field Temperature Measurement of Stainless Steel Specimens Subjected to Uniaxial Tensile Loading at Various Strain Rates

The variation of storage and heat energy in AISI 304 under plastic deformation

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