Dendrite size dependence of tensile plasticity of in situ Ti-based metallic glass matrix composites

Three Ti-based metallic glass matrix composites (MGMCs) with different sizes of dendrites exhibit excellent mechanical properties. Different sizes of dendrites lead to different tensile properties, the size of dendrites plays an important role in gaining the tensile ductility of the in situ MGMCs. The dependences of the ductility and the size of the dendrites in the in situ MGMCs can be illustrated by an inverted U-shaped curves. The tensile deformation behavior of the present composites is classified into three stages, each stage and effects of the changed sizes of dendrites are investigated by focusing on the evolution of dislocations in dendrites and shear bands in amorphous matrix. Crown Copyright (C) 2013 Published by Elsevier B. V. All rights reserved.