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.
Document Type
Article
Publication Date
10-2-2013
Digital Object Identifier (DOI)
http://dx.doi.org/10.1038/srep02816
Repository Citation
Qiao, J. W.; Zhang, T.; Yang, Fuqian; Liaw, P. K.; Pauly, S.; and Xu, B. S., "A Tensile Deformation Model for In-situ Dendrite/Metallic Glass Matrix Composites" (2013). Chemical and Materials Engineering Faculty Publications. 4.
https://uknowledge.uky.edu/cme_facpub/4
Notes/Citation Information
Published in Scientific Reports, v. 3, article no. 2816, p. 1-6.
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