Controlled assembly of graphene-capped nickel, cobalt and iron silicides

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.

Description
Keywords
Electrical and electronic engineering, Electronic properties and devices, Electronic properties and materials, Graphene
Citation
Vilkov, O., Fedorov, A., Usachov, D., Yashina, L. V., Generalov, A. V., Borygina, K., et al. (2013). Controlled assembly of graphene-capped nickel, cobalt and iron silicides. 3. https://doi.org//10.1038/srep02168
License
CC BY-NC-SA 3.0 Unported