Results 241 to 250 of about 25,125 (299)

A temperature and strain rate dependent strain hardening law

International Journal of Pressure Vessels and Piping, 1992
Abstract A temperature and strain rate dependent strain hardening law is proposed to describe stress-strain-temperature-strain rate relations. The formulation is purely empirical, based on experimental data of an alloy steel. Agreement between the proposed temperature-strain rate dependent strain hardening law and experimental data is very good over ...
CHO, YH, KIM, KT
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Strain hardening rate sensitivity and strain rate sensitivity in TWIP steels

Materials Science and Engineering: A, 2015
Abstract TWIP steels are materials with very high strength and exceptional strain hardening capability, parameters leading to large energy absorption before failure. However, TWIP steels also exhibit reduced (often negative) strain rate sensitivity (SRS) which limits the post-necking deformation.
Bintu, A, Vincze, G, Picu, CR, Lopes, AB, Gracio, JJ, Barlat, F   +5 more
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Rate‐ and temperature‐dependent strain hardening of polycarbonate

Journal of Polymer Science Part B: Polymer Physics, 2012
AbstractThe modeling and quantification of a viscous contribution to strain hardening is discussed. Traditional strain hardening models, based on rubber‐elasticity, show serious deviations from the experimentally observed large‐strain response of glassy polymers.
Senden, D.J.A., Krop, S., Dommelen, van, J.A.W., Govaert, L.E.   +3 more
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Strain hardening, strain rate sensitivity, and ductility of nanostructured metals

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2004
This paper presents an overview of the strain hardening and strain rate hardening behavior of nanostructured and ultrafine-grained metals. The experimental findings obtained in our laboratory are summarized, with some recent data for ultrafine-grained Cu presented as a model case.
Y.M. Wang, E. Ma
exaly   +2 more sources

The strain-rate sensitivitity of flow stress and strain-hardening rate in metallic materials

Materials Science and Engineering: A, 1994
Abstract The objectives of the present investigation are to characterize the high strain rate (≅ 10 4 s −1 ) plastic flow behaviour of a number of metals and alloys and also to compare the dynamic flow behaviour with that at static strain rates (≅ 10 −2 s −1 ).
Y. Tirupataiah, G. Sundararajan
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Strain-rate effects on the tensile behavior of strain-hardening cementitious composites

Construction and Building Materials, 2014
Abstract This paper investigated the strain-rate effects on the tensile properties of strain-hardening cementitious composite (SHCC) and explored the underlying micromechanical sources responsible for the rate dependence. Experimental studies were carried out to reveal rate dependence in component phases, i.e.
En-Hua Yang, VÍCTOR C Li
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The Influence of Strain Hardening and Strain-Rate Sensitivity on Sheet Metal Forming

Journal of Engineering Materials and Technology, 1977
The current understanding of sheet metal stamping processes is discussed in the light of materials’ ability to distribute plastic strains in uniaxial and biaxial deformation. The focus is on the plastic flow properties, namely strain hardening and strain-rate sensitivity.
A. K. Ghosh
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The Influence of Rate of Strain-Hardening in Machining

Proceedings of the Institution of Mechanical Engineers, 1961
In order to determine the influence of the rate of strain-hardening (that is, rate of increase of flow stress with straining) on the machining process, cutting tests were carried out on a material with a high rate of strain-hardening and on a material with a relatively low rate of strain-hardening.
P. L. B. Oxley, A. G. Humphreys, A. Larizadeh   +2 more
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Analysis of the Temperature and Strain-Rate Dependences of Strain Hardening

Metallurgical and Materials Transactions A, 2017
A classical constitutive modeling-based Ansatz for the impact of thermal activation on the stress–strain response of metallic materials is compared with the state parameter-based Kocks–Mecking model. The predicted functional dependencies suggest that, in the first approach, only the dislocation storage mechanism is a thermally activated process ...
Johannes Kreyca, Ernst Kozeschnik
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Strain hardening rate in relation to microstructure in precipitation hardening materials

Le Journal de Physique IV, 2000
The influence of microstructure on strain hardening is studied through Kocks-Mecking plots in a number of systems showing precipitation hardening: Al-Zn-Mg, Al-Mg-Si-Cu, and Fe-Cu. The presence of a supersaturated solid solution is shown to result in an extremely high work hardening rate, due to dynamic precipitation during the straining.
A. Deschamps, S. Esmaeili, W. J. Poole, M. Militzer   +3 more
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