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Title: Controlled assembly of graphene-capped nickel, cobalt and iron silicides
Authors: Vilkov, O.Fedorov, A.Usachov, D.Yashina, L. V.Generalov, A. V.Borygina, K.Verbitskiy, N. I.Grüneis, A.Vyalikh, D. V.
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Issue Date: 2013
Published in: Scientific Reports , Volume 3
Publisher: London : Nature Publishing Group
Abstract: In-situ dendrite/metallic glass matrix composites (MGMCs) with a composition of Ti46Zr20V12Cu5Be17 exhibit ultimate tensile strength of 1510 MPa and fracture strain of about 7.6%. A tensile deformation model is established, based on the five-stage classification: (1) elastic-elastic, (2) elastic-plastic, (3) plastic-plastic (yield platform), (4) plastic-plastic (work hardening), and (5) plastic-plastic (softening) stages, analogous to the tensile behavior of common carbon steels. The constitutive relations strongly elucidate the tensile deformation mechanism. In parallel, the simulation results by a finite-element method (FEM) are in good agreement with the experimental findings and theoretical calculations. The present study gives a mathematical model to clarify the work-hardening behavior of dendrites and softening of the amorphous matrix. Furthermore, the model can be employed to simulate the tensile behavior of in-situ dendrite/MGMCs.
Keywords: Electrical and electronic engineering; Electronic properties and devices; Electronic properties and materials; Graphene
DDC: 620
License: CC BY-NC-SA 3.0 Unported
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Appears in Collections:Ingenieurwissenschaften

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