Results 241 to 250 of about 1,250,898 (288)
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Journal of Mechanical Engineering Science, 1972
Continuous and interrupted room temperature compression tests were carried out on geometrically similar specimens of duralumin, pure copper and lead, using steel and ebonite dies. Significant differences in strain-hardening rate were ascribed to heat-transfer during deformation.
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Continuous and interrupted room temperature compression tests were carried out on geometrically similar specimens of duralumin, pure copper and lead, using steel and ebonite dies. Significant differences in strain-hardening rate were ascribed to heat-transfer during deformation.
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Strain hardening in liquid-particle suspensions
Physical Review E, 2005The behavior of a liquid-particle suspension induced to sheared motion was analyzed by numerical simulations. When the velocity (strain) of the suspension began to increase, its viscosity first stayed almost constant, but increased then rapidly to a clearly higher level.
Hyväluoma, Jari +4 more
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Strain hardening of thermoplastics
Macromolecules, 1993Published stress-strain curves of different thermoplastics in tension are used to evaluate a theoretical equation derived from a model in which the strain hardening effect is related to the Gaussian network theory of rubber ...
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Dislocation Multipoles and Their Role in Strain-Hardening
Journal of Applied Physics, 1964The stress fields of edge dislocation dipoles are able to trap other edge dislocations that pass nearby. The configurations, energies, and trapping stresses of the resulting tripoles are discussed here in some detail. Dipoles may also interact dynamically with approaching dislocations because they cause fluctuating stresses. The decrease in the average
Chen, H. S., Gilman, J. J., Head, A. K.
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2009
Introduction With elastic deformation, the strains are proportional to the stress, so every level of stress causes some elastic deformation. On the other hand, a definite level of stress must be applied before any plastic deformation occurs. As the stress is further increased, the amount of deformation increases, but not linearly.
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Introduction With elastic deformation, the strains are proportional to the stress, so every level of stress causes some elastic deformation. On the other hand, a definite level of stress must be applied before any plastic deformation occurs. As the stress is further increased, the amount of deformation increases, but not linearly.
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STRAIN HARDENING OF DOUGH AS A REQUIREMENT FOR GAS RETENTION
Journal of Texture Studies, 1992ABSTRACTMechanisms that can be responsible for the ability of wheat flour doughs to retain gas are discussed. It is concluded that the relevant types of physical instabilities are Ostwald ripening (disproportionation) and coalescence of gas cells. The extent of Ostwald ripening is probably primarily controlled by surface rheological properties; it ...
Vliet, T. van +3 more
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The quasi-static mechanical response of high purity, polycrystalline [alpha]-titanium is investigated in terms of the underlying deformation mechanisms that govern its macroscopic behavior at room temperature. Constant strain rate tests were conducted on this material in simple compression, plane-strain compression and simple shear, and the true stress
Ayman A. Salem +2 more
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Ayman A. Salem +2 more
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Metal Science and Heat Treatment, 1986
1. The nature of the depedence of maximal uniform strain ep and of the strain-hardening coefficient n on the degree of strain hardening and on the heat-treatment regimes is analogous. 2. Strain ep can be calculated by the formula ep=(n −2)/(n −1), where n is determined from the results of two indentations of a spherical indentor.
M. P. Markovets, V. M. Matyunin
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1. The nature of the depedence of maximal uniform strain ep and of the strain-hardening coefficient n on the degree of strain hardening and on the heat-treatment regimes is analogous. 2. Strain ep can be calculated by the formula ep=(n −2)/(n −1), where n is determined from the results of two indentations of a spherical indentor.
M. P. Markovets, V. M. Matyunin
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The secondary hardening phenomenon in strain-hardened MP35N alloy
Acta Materialia, 1998Abstract Mechanical testing and microscopy techniques were used to investigate the influence of aging on the structure and strengthening of MP35N alloy. It was confirmed that aging the deformed material at 600°C for 4 h provided additional strengthening, here referred to as “secondary hardening”, in addition to the primary strain hardening.
S Asgari +4 more
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Strength of Materials, 1981
1. Mathematical treatment of experimental data on establishing relationships between σs and ɛ with the use of the “Nairi” computer confirmed the usefulness of the equation σs = mɛn for describing experimental hardening curves and indicates the very close relationship between σs and; the correlation coefficient is 0.935–0.993, However, for many of ...
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1. Mathematical treatment of experimental data on establishing relationships between σs and ɛ with the use of the “Nairi” computer confirmed the usefulness of the equation σs = mɛn for describing experimental hardening curves and indicates the very close relationship between σs and; the correlation coefficient is 0.935–0.993, However, for many of ...
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