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Adiabatic Heating of Austenitic Stainless Steels at Different Strain Rates

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Adiabatic Heating of Austenitic Stainless Steels at Different Strain Rates. / Vazquez-Fernandez, N. I.; Soares, G. C.; Smith, J. L.; Seidt, J. D.; Isakov, M.; Gilat, A.; Kuokkala, V. T.; Hokka, M.

In: Journal of Dynamic Behavior of Materials, Vol. 5, No. 3, 20.06.2019, p. 221-229.

Research output: Contribution to journalArticleScientificpeer-review

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Vazquez-Fernandez NI, Soares GC, Smith JL, Seidt JD, Isakov M, Gilat A et al. Adiabatic Heating of Austenitic Stainless Steels at Different Strain Rates. Journal of Dynamic Behavior of Materials. 2019 Jun 20;5(3):221-229. https://doi.org/10.1007/s40870-019-00204-z

Author

Vazquez-Fernandez, N. I. ; Soares, G. C. ; Smith, J. L. ; Seidt, J. D. ; Isakov, M. ; Gilat, A. ; Kuokkala, V. T. ; Hokka, M. / Adiabatic Heating of Austenitic Stainless Steels at Different Strain Rates. In: Journal of Dynamic Behavior of Materials. 2019 ; Vol. 5, No. 3. pp. 221-229.

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@article{0d1f9c7ca7134eec90bafb7a3d650be8,
title = "Adiabatic Heating of Austenitic Stainless Steels at Different Strain Rates",
abstract = "This work focuses on the effect of strain rate on the mechanical response and adiabatic heating of two austenitic stainless steels. Tensile tests were carried out over a wide range of strain rates from quasi-static to dynamic conditions, using a hydraulic load frame and a device that allowed testing at intermediate strain rates. The full-field strains of the deforming specimens were obtained with digital image correlation, while the full field temperatures were measured with infrared thermography. The image acquisition for the strain and temperature images was synchronized to calculate the Taylor–Quinney coefficient (β). The Taylor–Quinney coefficient of both materials is below 0.9 for all the investigated strain rates. The metastable AISI 301 steel undergoes an exothermic phase transformation from austenite to α’-martensite during the deformation, which results in a higher value of β at any given strain, compared to the value obtained for the more stable AISI 316 steel at the same strain rate. For the metastable 301 steel, the value of β with respect to strain depends strongly on the strain rate. At strain rate of 85 s−1, the β factor increases from 0.69 to 0.82 throughout uniform elongation. At strain rate of 10−1 s−1, however, β increases during uniform deformation from 0.71 to a maximum of 0.95 and then decreases to 0.91 at the start of necking.",
keywords = "Dynamic testing, Hopkinson bar, Digital image correlation, Thermal imaging, Taylor–Quinney coefficient, Austenitic stainless steels, Strain-induced phase transformation",
author = "Vazquez-Fernandez, {N. I.} and Soares, {G. C.} and Smith, {J. L.} and Seidt, {J. D.} and M. Isakov and A. Gilat and Kuokkala, {V. T.} and M. Hokka",
year = "2019",
month = "6",
day = "20",
doi = "10.1007/s40870-019-00204-z",
language = "English",
volume = "5",
pages = "221--229",
journal = "Journal of Dynamic Behavior of Materials",
issn = "2199-7446",
publisher = "Springer",
number = "3",

}

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TY - JOUR

T1 - Adiabatic Heating of Austenitic Stainless Steels at Different Strain Rates

AU - Vazquez-Fernandez, N. I.

AU - Soares, G. C.

AU - Smith, J. L.

AU - Seidt, J. D.

AU - Isakov, M.

AU - Gilat, A.

AU - Kuokkala, V. T.

AU - Hokka, M.

PY - 2019/6/20

Y1 - 2019/6/20

N2 - This work focuses on the effect of strain rate on the mechanical response and adiabatic heating of two austenitic stainless steels. Tensile tests were carried out over a wide range of strain rates from quasi-static to dynamic conditions, using a hydraulic load frame and a device that allowed testing at intermediate strain rates. The full-field strains of the deforming specimens were obtained with digital image correlation, while the full field temperatures were measured with infrared thermography. The image acquisition for the strain and temperature images was synchronized to calculate the Taylor–Quinney coefficient (β). The Taylor–Quinney coefficient of both materials is below 0.9 for all the investigated strain rates. The metastable AISI 301 steel undergoes an exothermic phase transformation from austenite to α’-martensite during the deformation, which results in a higher value of β at any given strain, compared to the value obtained for the more stable AISI 316 steel at the same strain rate. For the metastable 301 steel, the value of β with respect to strain depends strongly on the strain rate. At strain rate of 85 s−1, the β factor increases from 0.69 to 0.82 throughout uniform elongation. At strain rate of 10−1 s−1, however, β increases during uniform deformation from 0.71 to a maximum of 0.95 and then decreases to 0.91 at the start of necking.

AB - This work focuses on the effect of strain rate on the mechanical response and adiabatic heating of two austenitic stainless steels. Tensile tests were carried out over a wide range of strain rates from quasi-static to dynamic conditions, using a hydraulic load frame and a device that allowed testing at intermediate strain rates. The full-field strains of the deforming specimens were obtained with digital image correlation, while the full field temperatures were measured with infrared thermography. The image acquisition for the strain and temperature images was synchronized to calculate the Taylor–Quinney coefficient (β). The Taylor–Quinney coefficient of both materials is below 0.9 for all the investigated strain rates. The metastable AISI 301 steel undergoes an exothermic phase transformation from austenite to α’-martensite during the deformation, which results in a higher value of β at any given strain, compared to the value obtained for the more stable AISI 316 steel at the same strain rate. For the metastable 301 steel, the value of β with respect to strain depends strongly on the strain rate. At strain rate of 85 s−1, the β factor increases from 0.69 to 0.82 throughout uniform elongation. At strain rate of 10−1 s−1, however, β increases during uniform deformation from 0.71 to a maximum of 0.95 and then decreases to 0.91 at the start of necking.

KW - Dynamic testing

KW - Hopkinson bar

KW - Digital image correlation

KW - Thermal imaging

KW - Taylor–Quinney coefficient

KW - Austenitic stainless steels

KW - Strain-induced phase transformation

UR - http://www.mendeley.com/research/adiabatic-heating-austenitic-stainless-steels-different-strain-rates

U2 - 10.1007/s40870-019-00204-z

DO - 10.1007/s40870-019-00204-z

M3 - Article

VL - 5

SP - 221

EP - 229

JO - Journal of Dynamic Behavior of Materials

JF - Journal of Dynamic Behavior of Materials

SN - 2199-7446

IS - 3

ER -