Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper

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ČEBRON, Matjaž ;KOSEL, Franc .
Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 60, n.7-8, p. 462-474, june 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/stored-energy-predictions-from-dislocation-based-hardening-models-and-hardness-measurements-for-tensile-deformed-commercial-purity-copper/>. Date accessed: 29 nov. 2021. 
doi:http://dx.doi.org/10.5545/sv-jme.2013.1569.
Čebron, M., & Kosel, F.
(2014).
Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper.
Strojniški vestnik - Journal of Mechanical Engineering, 60(7-8), 462-474.
doi:http://dx.doi.org/10.5545/sv-jme.2013.1569
@article{sv-jmesv-jme.2013.1569,
	author = {Matjaž  Čebron and Franc  Kosel},
	title = {Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {60},
	number = {7-8},
	year = {2014},
	keywords = {dislocations; hardening models; crystal plasticity; stored energy; calorimetry; hardness},
	abstract = {Stored energy analyses by differential scanning calorimetry (DSC) and indentation hardness measurement were performed on crosssectional samples cut from the gauge length of tensile-deformed copper specimens. The stress-strain curve was described using dislocationbased hardening models integrated into a visco-plastic Taylor-type model of polycrystal deformation. Three approaches in reproducing the experimental stress-strain curve were used to evaluate the differences in dislocation density predictions resulting from different modelling options. A good description of hardening was achieved by all three approaches and constitutive models and only negligible differences were found in the predicted dislocation density between assumed homogeneous and heterogeneous dislocation distribution throughout the polycrystal. Measured values of stored energy are somewhat lower than those published in research studies in which one-step and slow annealing methods were used. A simple model predicting a nearly linear increase of stored energy with dislocation density was found to adequately describe retained energy evolution. Since different dislocation arrangements result in different yield stress and energy predictions, both results can be used to determine values of parameters in two-internal-variable hardening models. Even though both measured quantities were satisfyingly described, uncertainties regarding material parameters and the applied polycrystal and stored energy models prevent us from claiming that the evaluated dislocation density distributions represent the actual dislocation structure in the material. As expected for strongly hardening materials, the relationship between yield stress and hardness could not be adequately approximated by a linear function. Instead, a linear combination of yield stress and hardening rate was used, finally providing a relation between hardness and stored energy through their mutual dependence on yield stress.},
	issn = {0039-2480},	pages = {462-474},	doi = {10.5545/sv-jme.2013.1569},
	url = {https://www.sv-jme.eu/article/stored-energy-predictions-from-dislocation-based-hardening-models-and-hardness-measurements-for-tensile-deformed-commercial-purity-copper/}
}
Čebron, M.,Kosel, F.
2014 June 60. Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 60:7-8
%A Čebron, Matjaž 
%A Kosel, Franc 
%D 2014
%T Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper
%B 2014
%9 dislocations; hardening models; crystal plasticity; stored energy; calorimetry; hardness
%! Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper
%K dislocations; hardening models; crystal plasticity; stored energy; calorimetry; hardness
%X Stored energy analyses by differential scanning calorimetry (DSC) and indentation hardness measurement were performed on crosssectional samples cut from the gauge length of tensile-deformed copper specimens. The stress-strain curve was described using dislocationbased hardening models integrated into a visco-plastic Taylor-type model of polycrystal deformation. Three approaches in reproducing the experimental stress-strain curve were used to evaluate the differences in dislocation density predictions resulting from different modelling options. A good description of hardening was achieved by all three approaches and constitutive models and only negligible differences were found in the predicted dislocation density between assumed homogeneous and heterogeneous dislocation distribution throughout the polycrystal. Measured values of stored energy are somewhat lower than those published in research studies in which one-step and slow annealing methods were used. A simple model predicting a nearly linear increase of stored energy with dislocation density was found to adequately describe retained energy evolution. Since different dislocation arrangements result in different yield stress and energy predictions, both results can be used to determine values of parameters in two-internal-variable hardening models. Even though both measured quantities were satisfyingly described, uncertainties regarding material parameters and the applied polycrystal and stored energy models prevent us from claiming that the evaluated dislocation density distributions represent the actual dislocation structure in the material. As expected for strongly hardening materials, the relationship between yield stress and hardness could not be adequately approximated by a linear function. Instead, a linear combination of yield stress and hardening rate was used, finally providing a relation between hardness and stored energy through their mutual dependence on yield stress.
%U https://www.sv-jme.eu/article/stored-energy-predictions-from-dislocation-based-hardening-models-and-hardness-measurements-for-tensile-deformed-commercial-purity-copper/
%0 Journal Article
%R 10.5545/sv-jme.2013.1569
%& 462
%P 13
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 60
%N 7-8
%@ 0039-2480
%8 2018-06-28
%7 2018-06-28
Čebron, Matjaž, & Franc  Kosel.
"Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper." Strojniški vestnik - Journal of Mechanical Engineering [Online], 60.7-8 (2014): 462-474. Web.  29 Nov. 2021
TY  - JOUR
AU  - Čebron, Matjaž 
AU  - Kosel, Franc 
PY  - 2014
TI  - Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2013.1569
KW  - dislocations; hardening models; crystal plasticity; stored energy; calorimetry; hardness
N2  - Stored energy analyses by differential scanning calorimetry (DSC) and indentation hardness measurement were performed on crosssectional samples cut from the gauge length of tensile-deformed copper specimens. The stress-strain curve was described using dislocationbased hardening models integrated into a visco-plastic Taylor-type model of polycrystal deformation. Three approaches in reproducing the experimental stress-strain curve were used to evaluate the differences in dislocation density predictions resulting from different modelling options. A good description of hardening was achieved by all three approaches and constitutive models and only negligible differences were found in the predicted dislocation density between assumed homogeneous and heterogeneous dislocation distribution throughout the polycrystal. Measured values of stored energy are somewhat lower than those published in research studies in which one-step and slow annealing methods were used. A simple model predicting a nearly linear increase of stored energy with dislocation density was found to adequately describe retained energy evolution. Since different dislocation arrangements result in different yield stress and energy predictions, both results can be used to determine values of parameters in two-internal-variable hardening models. Even though both measured quantities were satisfyingly described, uncertainties regarding material parameters and the applied polycrystal and stored energy models prevent us from claiming that the evaluated dislocation density distributions represent the actual dislocation structure in the material. As expected for strongly hardening materials, the relationship between yield stress and hardness could not be adequately approximated by a linear function. Instead, a linear combination of yield stress and hardening rate was used, finally providing a relation between hardness and stored energy through their mutual dependence on yield stress.
UR  - https://www.sv-jme.eu/article/stored-energy-predictions-from-dislocation-based-hardening-models-and-hardness-measurements-for-tensile-deformed-commercial-purity-copper/
@article{{sv-jme}{sv-jme.2013.1569},
	author = {Čebron, M., Kosel, F.},
	title = {Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {60},
	number = {7-8},
	year = {2014},
	doi = {10.5545/sv-jme.2013.1569},
	url = {https://www.sv-jme.eu/article/stored-energy-predictions-from-dislocation-based-hardening-models-and-hardness-measurements-for-tensile-deformed-commercial-purity-copper/}
}
TY  - JOUR
AU  - Čebron, Matjaž 
AU  - Kosel, Franc 
PY  - 2018/06/28
TI  - Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 60, No 7-8 (2014): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2013.1569
KW  - dislocations, hardening models, crystal plasticity, stored energy, calorimetry, hardness
N2  - Stored energy analyses by differential scanning calorimetry (DSC) and indentation hardness measurement were performed on crosssectional samples cut from the gauge length of tensile-deformed copper specimens. The stress-strain curve was described using dislocationbased hardening models integrated into a visco-plastic Taylor-type model of polycrystal deformation. Three approaches in reproducing the experimental stress-strain curve were used to evaluate the differences in dislocation density predictions resulting from different modelling options. A good description of hardening was achieved by all three approaches and constitutive models and only negligible differences were found in the predicted dislocation density between assumed homogeneous and heterogeneous dislocation distribution throughout the polycrystal. Measured values of stored energy are somewhat lower than those published in research studies in which one-step and slow annealing methods were used. A simple model predicting a nearly linear increase of stored energy with dislocation density was found to adequately describe retained energy evolution. Since different dislocation arrangements result in different yield stress and energy predictions, both results can be used to determine values of parameters in two-internal-variable hardening models. Even though both measured quantities were satisfyingly described, uncertainties regarding material parameters and the applied polycrystal and stored energy models prevent us from claiming that the evaluated dislocation density distributions represent the actual dislocation structure in the material. As expected for strongly hardening materials, the relationship between yield stress and hardness could not be adequately approximated by a linear function. Instead, a linear combination of yield stress and hardening rate was used, finally providing a relation between hardness and stored energy through their mutual dependence on yield stress.
UR  - https://www.sv-jme.eu/article/stored-energy-predictions-from-dislocation-based-hardening-models-and-hardness-measurements-for-tensile-deformed-commercial-purity-copper/
Čebron, Matjaž, AND Kosel, Franc.
"Stored Energy Predictions from Dislocation-Based Hardening Models and Hardness Measurements for Tensile-Deformed Commercial Purity Copper" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 60 Number 7-8 (28 June 2018)

Authors

Affiliations

  • Hidria Rotomatika d.o.o. Slovenia 1
  • University of Ljubljana, Faculty of Mechanical Engineering, Slovenia 2

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 60(2014)7-8, 462-474

https://doi.org/10.5545/sv-jme.2013.1569

Stored energy analyses by differential scanning calorimetry (DSC) and indentation hardness measurement were performed on crosssectional samples cut from the gauge length of tensile-deformed copper specimens. The stress-strain curve was described using dislocationbased hardening models integrated into a visco-plastic Taylor-type model of polycrystal deformation. Three approaches in reproducing the experimental stress-strain curve were used to evaluate the differences in dislocation density predictions resulting from different modelling options. A good description of hardening was achieved by all three approaches and constitutive models and only negligible differences were found in the predicted dislocation density between assumed homogeneous and heterogeneous dislocation distribution throughout the polycrystal. Measured values of stored energy are somewhat lower than those published in research studies in which one-step and slow annealing methods were used. A simple model predicting a nearly linear increase of stored energy with dislocation density was found to adequately describe retained energy evolution. Since different dislocation arrangements result in different yield stress and energy predictions, both results can be used to determine values of parameters in two-internal-variable hardening models. Even though both measured quantities were satisfyingly described, uncertainties regarding material parameters and the applied polycrystal and stored energy models prevent us from claiming that the evaluated dislocation density distributions represent the actual dislocation structure in the material. As expected for strongly hardening materials, the relationship between yield stress and hardness could not be adequately approximated by a linear function. Instead, a linear combination of yield stress and hardening rate was used, finally providing a relation between hardness and stored energy through their mutual dependence on yield stress.

dislocations; hardening models; crystal plasticity; stored energy; calorimetry; hardness