منابع مشابه
Influence of Niobium on the Beginning of the Plastic Flow of Material during Cold Deformation
Investigations were conducted on low-carbon steel and the steel with same chemical composition with addition of microalloying element niobium. While tensile testing was carried out, the thermographic measurement was tacking place simultaneously. A specific behavior of niobium microalloyed steel was noticed. Test results have shown that, in the elastic deformation region, thermoelastic effect oc...
متن کاملAvalanche-size distributions in mean-field plastic yielding models.
We discuss the size distribution N(S) of avalanches occurring at the yielding transition of mean-field (i.e., Hebraud-Lequeux) models of amorphous solids. The size distribution follows a power law dependence of the form N(S)∼S(-τ). However (contrary to what is found in its depinning counterpart), the value of τ depends on details of the dynamic protocol used. For random triggering of avalanches...
متن کاملYielding and Flow of Monodisperse Emulsions
prised of highly deformed droplets. Such emulsions exhibit We have measured the yield transition of monodisperse emula plastic-like response to shear deformations; for small deforsions as the volume fraction, f, and droplet radius, a , are varied. mations, they resist the shear elastically, with the stress, t, We study the crossover from the perturbative shear regime, which being linearly propo...
متن کاملFront propagation at the onset of plastic yielding.
The existence of a finite threshold, the yield stress, for the onset of plastic yielding is a universal feature of plasticity. This jamming-unjamming transition is naturally accounted for by the dynamics of a bistable internal state field. We show, within the athermal shear transformation zone theory of amorphous plasticity, that the transition is accompanied by the propagation of plastic front...
متن کاملYielding and flow in adhesive and nonadhesive concentrated emulsions.
The nonlinear rheological response of soft glassy materials is addressed experimentally by focusing on concentrated emulsions where interdroplet attraction is tuned through varying the surfactant content. Velocity profiles are recorded using ultrasonic velocimetry simultaneously to global rheological data in the Couette geometry. Our data show that nonadhesive and adhesive emulsions have radica...
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ژورنال
عنوان ژورنال: Acta Metallurgica
سال: 1963
ISSN: 0001-6160
DOI: 10.1016/0001-6160(63)90058-0