Topic
Necking
About: Necking is a research topic. Over the lifetime, 5280 publications have been published within this topic receiving 113945 citations.
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TL;DR: In this paper, it was found that the ultimate tensile strength of dual phase steels increased with increasing the volume fraction as well as the tensile strengths of martensite.
Abstract: Fe-2% Si-1.5% Mn steels with three levels of carbon content (0.10, 0.14 and 0.19 wt%) were intercritically annealed followed by water quenching to obtain dual phase (martensite plus ferrite) structure. It is found that the ultimate tensile strength of dual phase steels increased with increasing the volume fraction as well as the tensile strength of martensite. The tensile strength of dual phase steel can be predicted using the law of mixtures although the predicted tensile strength is slightly higher than the experimental one. It is suggested that martensite never reaches its ultimate tensile strength when the necking of dual phase steels occurs.
70 citations
TL;DR: In this paper, a finite element analysis based on rate-dependent crystal plasticity has been developed to simulate large strain behaviour, where each material point in the specimen is considered to be a polycrystalline aggregate of a large number of FCC grains.
69 citations
TL;DR: In this paper, a large-sized Zr-based BMG composite containing coarse and spherical β-Zr precipitates was produced using the semi-solid progressive solidification (SSPS) method.
69 citations
TL;DR: In this paper, the results of a semi-solid tensile test conducted in situ using X-ray microtomography are compared with the predictions of a coupled hydromechanical granular model in order to both validate the predictions and explain the experimental observations.
69 citations
TL;DR: A constitutive relation is proposed for the dependence of the tension in a thin polymeric fiber on the variation of the stretch ratio λ along the fiber axis, which yields a nonlinear second-order differential equation for λ whose equilibrium solutions (for a long fiber) are known in other contexts.
Abstract: A constitutive relation is proposed for the dependence of the tension in a thin polymeric fiber on the variation of the stretch ratio λ along the fiber axis. When this relation is placed in the equation of balance of forces, it yields a nonlinear second-order differential equation for λ whose equilibrium solutions (for a long fiber) are known in other contexts. The solutions describe necks, bulges, drawing configurations, and periodic striations. The assumption that motions resulting from gradual changes in tension or length are homotopies formed from these equilibrium solutions is compatible with many of the observed properties of tension-induced necking and drawing in fibers of such polymers as nylon and polyethylene.
69 citations