Results 241 to 250 of about 242,010 (302)
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A model comprising work hardening and solid solution hardening
Physica Status Solidi (a), 1978In a former paper the problem of solid solution hardening and work hardening of solid solutions was treated for the case of two types of obstacles with relative concentrations xs and xw, and strengths ƒs and ƒw. The resolved shear stress can be formally written as τ2/(Gb/l0)2 = τ(ƒs, ƒw, xs, xw) where G and b have their usual meaning and l0 denotes ...
G. J. Den Otter, R. Vetter
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“Work-Hardenable” Ductile Bulk Metallic Glass
Physical Review Letters, 2005Usually, monolithic bulk metallic glasses undergo inhomogeneous plastic deformation and exhibit poor ductility (< 1%) at room temperature. We present a new class of bulk metallic glass, which exhibits high strength of up to 2265 MPa together with extensive "work hardening" and large ductility of 18%. Significant increase in the flow stress was observed
Das, Jayanta +6 more
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Journal of Applied Mechanics, 1948
Abstract Based on the “blocking” theory of the strength of a poly-crystalline metal, a law of work-hardening is derived and checked experimentally on mild steel deformed by wire-drawing up to a deformation of 4.6 in the logarithmic measure.
Freudenthal, A. M., Reiner, M.
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Abstract Based on the “blocking” theory of the strength of a poly-crystalline metal, a law of work-hardening is derived and checked experimentally on mild steel deformed by wire-drawing up to a deformation of 4.6 in the logarithmic measure.
Freudenthal, A. M., Reiner, M.
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Work hardening of dispersion-hardened crystals
Philosophical Magazine, 1966Abstract A new theory of work hardening in dispersion-hardened single crystals—by which we mean soft crystals containing hard non-deforming particles of a second phase—is described. It is based on the fact that, if the particles do not deform plastically, and the interface between particle and matrix does not fracture, then secondary slip must occur ...
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Materials Science and Engineering: A, 1997
This paper presents simulation of the work hardening curves of metals deformed at a constant temperature and strain rate under conditions of dynamic recrystallization (DRX). A work hardening model has been developed based on the evolution of the dislocation structure during deformation.
J. Kroc, J. Balík, P. Lukác
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This paper presents simulation of the work hardening curves of metals deformed at a constant temperature and strain rate under conditions of dynamic recrystallization (DRX). A work hardening model has been developed based on the evolution of the dislocation structure during deformation.
J. Kroc, J. Balík, P. Lukác
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Work-hardening and recovery of dispersion hardened alloys
Philosophical Magazine, 1976Abstract Experiments have been carried out in order to test theories of the work-hardening and low temperature recovery in dispersion hardened crystals. Single crystals of copper containing small (∼ 500 A diameter) particles of SiO2 have been deformed in tension at temperatures between 77 and 450 K, and the primary and secondary dislocation ...
F. J. Humphreys, P. B. Hirsch
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The American Journal of Occupational Therapy, 1994
Abstract Objectives. A review of outcome research conducted between 1982 and 1992 revealed return-to-work rates for industrial rehabilitation programs that ranged from 50% to 88%. Variations in outcome statistics appeared to reflect discrepancies in factors such as type of research design, initial characteristics of the client sample ...
L O, Niemeyer +4 more
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Abstract Objectives. A review of outcome research conducted between 1982 and 1992 revealed return-to-work rates for industrial rehabilitation programs that ranged from 50% to 88%. Variations in outcome statistics appeared to reflect discrepancies in factors such as type of research design, initial characteristics of the client sample ...
L O, Niemeyer +4 more
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Work Hardening and Work Conditioning
1998Since their inception in the late 1970s, work-hardening and work-conditioning programs have undergone metamorphoses. They have become less distinct and now offer more diverse services. This is primarily due to the ever-changing environment of health care, and the need to adapt to new consumer needs.
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Metal Science, 1983
AbstractUntil recently some authors of papers and textbooks have given the erroneous impression that increased work hardening rate always leads to increased maximum uniform strain. Recently, it has been recognized that such a statement is true only if the tensile strength remains constant.
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AbstractUntil recently some authors of papers and textbooks have given the erroneous impression that increased work hardening rate always leads to increased maximum uniform strain. Recently, it has been recognized that such a statement is true only if the tensile strength remains constant.
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1992
Following Drucker (1951,1959), we introduce the concept of stability of deformation processes. We use the so-called quasi-cycle for stresses, e.g. a process in which the stress after loading and unloading returns to its initial state, but the strain state in general does not (through irreversibility of plastic processes). Fig. 8.1 shows the quasi-cycle
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Following Drucker (1951,1959), we introduce the concept of stability of deformation processes. We use the so-called quasi-cycle for stresses, e.g. a process in which the stress after loading and unloading returns to its initial state, but the strain state in general does not (through irreversibility of plastic processes). Fig. 8.1 shows the quasi-cycle
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