The Effect of Deformation Activation Volume, Strain Rate Sensitivity and Processing Temperature of Grain Size Variants
The activation volume of 6082T6 aluminum is
investigated at different temperatures for grain size variants. The
deformation activation volume was computed on the basis of the
relationship between the Boltzmann’s constant k, the testing
temperatures, the material strain rate sensitivity and the material yield
stress grain size variants. The material strain rate sensitivity is
computed as a function of yield stress and strain rate grain size
variants. The effect of the material strain rate sensitivity and the
deformation activation volume of 6082T6 aluminum at different
temperatures of 3-D grain are discussed. It is shown that the strain rate sensitivities and activation volume
are negative for the grain size variants during the deformation of
nanostructured materials. It is also observed that the activation
volume vary in different ways with the equivalent radius, semi minor
axis radius, semi major axis radius and major axis radius. From the
obtained results it is shown that the variation of activation volume
increase and decrease with the testing temperature. It was revealed
that, increase in strain rate sensitivity led to decrease in activation
volume whereas increase in activation volume led to decrease in
strain rate sensitivity.
[1] Segal, V. M. 2005.Deformation mode and plastic flow in ultra-fine
grained metals. Materials Science and Engineering A 406(2005)205-
216.
[2] Laszlo, S. Toth & Chengfan Gu.Ultrafine grain metals by severe plastic
deformation. Material Characterization 92(2014) 1-14.
[3] Cuenot, S. & Fretigny, C. & Demoustier, S. & NYSTEN, B. 2004.
Surface tension effect on the mechanical properties by atomic
microscopy. The American Physical Society 69 (16):1-5, 20.
[4] Wang, Z. J. & Shan, Q. J. & Sun, L. J. & MA, E. 2012. Sample size
effects on the large strain bursts in submicron aluminum pillars. Applied
Physics Letters 100, 071906.
[5] Zhou, C. & Beyerlein, I. J. & LESAR, R. 2011. Plastic deformation
mechanisms of fcc single crystals at small scales. Acta Materaillia 59
(20), 7673-7682.
[6] Zhu. T, & LI. J, & Samanta. A, & Leache. A, & Gall, K. 2008.
Temperature and strain rate dependence of surface dislocation
nucleation. Physical Review Letters 100 (2), 025502.
[7] Anton, S. & Brane, S. & Mateyz, F. 2009. Determination of the strainrate
sensitivity and the activation energy of deformation in the
superplastic aluminium alloy Al-Mg-Mn-Sc. RMZ – Materials and
Geoenvironment, Vol. 56, No. 4, pp. 389–399, 2009.
[8] Sabirov, I. & Barnett, M. R. & Estrin, Y. & Hodgson, P. D. 2009. The
effect of strain rate on the deformation mechanisms and the strain rate
sensitivity of an ultra-fine-grained Al alloy. Scripta Materialia 61 (2009)
181–184.
[9] Brad, L. B. &Thomas, B. C. &Morris, F. D. 2007. The Strain-Rate
Sensitivity of High-Strength High-Toughness Steels. Sanddia Report
Sand 2007-0036.
[10] Kumar, R. & Sharma, G. & Kumar, M. 2013. Effect of size and shape on
the vibrational and thermodynamics properties of nanomaterials. Journal
of thermodynamics Vol. pp 5.
[11] Lee, W. S. & Lin, C. F. &Chen, T. H. & Hwang, H. H. 2008. Effects of
strain rate and temperature on mechanical behavior of Ti–15Mo–5Zr–
3Al alloy. J Mech Behav Biomed Mater 2008;1(4):336–44.
[12] Chiou, S. T. & Tsai, H. L. & Lee, W. S. 2009. Impact mechanical
response and microstructural evolution of Ti alloy under various
temperatures. J Mater Process Technol2009; 209(5):2282–94.
[13] Guisbiers, G. 2010. Size dependent materials properties towards a
universal equation. Nanoscale Research Letters, Vol. 5, No.7, pp. 1132-
1136.
[14] Zhang, Z. & Lii, X. X. & Jiang, Q. 1999. Finite size effect on melting
enthalpy and melting entropy of nanocrystals. Physical B Vol. 270, No.
3-4, pp. 249-254.
[15] Gunderov, D. V. & Maksutova, G. & Churakova, A. & lukyanov, A. &
Kreitcberg, A. & Raab, G. I. & Sabirov, A. I. & Prokoshkin, S. 20015.
Strain rate sensitivity and activation volume of coarse-grained and
ultrafine-grained TiNi alloys. ScriptaMateriallia 102 (2015) 99-102.
[16] Zhao, M. & Jiang, Q. 2006. Reverse hall-petch relationship of metals in
nanometer size. Emerging Technologies-Nanoelectronics, IEEE
Conference on Vol. pp 472-474, (10-13 Jan. 2006.
[17] Tengen, T. B. & Iwankiewicz, R. 2009. Modelling of the grain size
probability distribution in polycrystalline. Composite Structures
91(2009) 461-466
[18] Tengen, T. B. 2008.Analysis of Characteristic of Random
Microstructures of Nanomaterials. PhD. Thesis. Witwatersrand
Johannesburg.
[19] Sob, P. B. & Alugongo, A. A. & Tengen, T. B. 2015. Determination of
strain rate sensitivity (SRS) for grain size variants on nanocrystalline
materials produced by ARB and equal channel angular pressing
(ECAP). 17th International Conference on Advanced Materials and
Nanotechnology (ICAMN 2015), World Academy of Science,
Engineering and Technology, Bangkok, Thailand, paper number
15TH12000585.
[1] Segal, V. M. 2005.Deformation mode and plastic flow in ultra-fine
grained metals. Materials Science and Engineering A 406(2005)205-
216.
[2] Laszlo, S. Toth & Chengfan Gu.Ultrafine grain metals by severe plastic
deformation. Material Characterization 92(2014) 1-14.
[3] Cuenot, S. & Fretigny, C. & Demoustier, S. & NYSTEN, B. 2004.
Surface tension effect on the mechanical properties by atomic
microscopy. The American Physical Society 69 (16):1-5, 20.
[4] Wang, Z. J. & Shan, Q. J. & Sun, L. J. & MA, E. 2012. Sample size
effects on the large strain bursts in submicron aluminum pillars. Applied
Physics Letters 100, 071906.
[5] Zhou, C. & Beyerlein, I. J. & LESAR, R. 2011. Plastic deformation
mechanisms of fcc single crystals at small scales. Acta Materaillia 59
(20), 7673-7682.
[6] Zhu. T, & LI. J, & Samanta. A, & Leache. A, & Gall, K. 2008.
Temperature and strain rate dependence of surface dislocation
nucleation. Physical Review Letters 100 (2), 025502.
[7] Anton, S. & Brane, S. & Mateyz, F. 2009. Determination of the strainrate
sensitivity and the activation energy of deformation in the
superplastic aluminium alloy Al-Mg-Mn-Sc. RMZ – Materials and
Geoenvironment, Vol. 56, No. 4, pp. 389–399, 2009.
[8] Sabirov, I. & Barnett, M. R. & Estrin, Y. & Hodgson, P. D. 2009. The
effect of strain rate on the deformation mechanisms and the strain rate
sensitivity of an ultra-fine-grained Al alloy. Scripta Materialia 61 (2009)
181–184.
[9] Brad, L. B. &Thomas, B. C. &Morris, F. D. 2007. The Strain-Rate
Sensitivity of High-Strength High-Toughness Steels. Sanddia Report
Sand 2007-0036.
[10] Kumar, R. & Sharma, G. & Kumar, M. 2013. Effect of size and shape on
the vibrational and thermodynamics properties of nanomaterials. Journal
of thermodynamics Vol. pp 5.
[11] Lee, W. S. & Lin, C. F. &Chen, T. H. & Hwang, H. H. 2008. Effects of
strain rate and temperature on mechanical behavior of Ti–15Mo–5Zr–
3Al alloy. J Mech Behav Biomed Mater 2008;1(4):336–44.
[12] Chiou, S. T. & Tsai, H. L. & Lee, W. S. 2009. Impact mechanical
response and microstructural evolution of Ti alloy under various
temperatures. J Mater Process Technol2009; 209(5):2282–94.
[13] Guisbiers, G. 2010. Size dependent materials properties towards a
universal equation. Nanoscale Research Letters, Vol. 5, No.7, pp. 1132-
1136.
[14] Zhang, Z. & Lii, X. X. & Jiang, Q. 1999. Finite size effect on melting
enthalpy and melting entropy of nanocrystals. Physical B Vol. 270, No.
3-4, pp. 249-254.
[15] Gunderov, D. V. & Maksutova, G. & Churakova, A. & lukyanov, A. &
Kreitcberg, A. & Raab, G. I. & Sabirov, A. I. & Prokoshkin, S. 20015.
Strain rate sensitivity and activation volume of coarse-grained and
ultrafine-grained TiNi alloys. ScriptaMateriallia 102 (2015) 99-102.
[16] Zhao, M. & Jiang, Q. 2006. Reverse hall-petch relationship of metals in
nanometer size. Emerging Technologies-Nanoelectronics, IEEE
Conference on Vol. pp 472-474, (10-13 Jan. 2006.
[17] Tengen, T. B. & Iwankiewicz, R. 2009. Modelling of the grain size
probability distribution in polycrystalline. Composite Structures
91(2009) 461-466
[18] Tengen, T. B. 2008.Analysis of Characteristic of Random
Microstructures of Nanomaterials. PhD. Thesis. Witwatersrand
Johannesburg.
[19] Sob, P. B. & Alugongo, A. A. & Tengen, T. B. 2015. Determination of
strain rate sensitivity (SRS) for grain size variants on nanocrystalline
materials produced by ARB and equal channel angular pressing
(ECAP). 17th International Conference on Advanced Materials and
Nanotechnology (ICAMN 2015), World Academy of Science,
Engineering and Technology, Bangkok, Thailand, paper number
15TH12000585.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:71193", author = "P. B. Sob and A. A. Alugongo and T. B. Tengen", title = "The Effect of Deformation Activation Volume, Strain Rate Sensitivity and Processing Temperature of Grain Size Variants", abstract = "The activation volume of 6082T6 aluminum is
investigated at different temperatures for grain size variants. The
deformation activation volume was computed on the basis of the
relationship between the Boltzmann’s constant k, the testing
temperatures, the material strain rate sensitivity and the material yield
stress grain size variants. The material strain rate sensitivity is
computed as a function of yield stress and strain rate grain size
variants. The effect of the material strain rate sensitivity and the
deformation activation volume of 6082T6 aluminum at different
temperatures of 3-D grain are discussed. It is shown that the strain rate sensitivities and activation volume
are negative for the grain size variants during the deformation of
nanostructured materials. It is also observed that the activation
volume vary in different ways with the equivalent radius, semi minor
axis radius, semi major axis radius and major axis radius. From the
obtained results it is shown that the variation of activation volume
increase and decrease with the testing temperature. It was revealed
that, increase in strain rate sensitivity led to decrease in activation
volume whereas increase in activation volume led to decrease in
strain rate sensitivity.
", keywords = "Nanostructured materials, grain size variants,
temperature, yield stress, strain rate sensitivity, activation volume.", volume = "9", number = "11", pages = "1928-4", }
