Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1599856 | Intermetallics | 2015 | 6 Pages |
Abstract
Compressive tests were conducted on metallic glass matrix composites at a series loading rates. It was found that mechanical properties of the composite, e.g. yielding stress and plasticity, have a week dependence on strain rates of 4.0Â ÃÂ 10â4Â sâ1-4.0Â ÃÂ 10â1Â sâ1. Four composites were tested at a constant strain rate of 2.3Â ÃÂ 10Â sâ1 to uncover the dynamic deformation behaviors. Compared with the quasi-static case, the yielding strength increased under dynamic loading rate, but the plasticity decreased significantly. On the other hand, the dynamic compressive has closely relation with the dendrite size and volume fraction. The decreasing of the dendrite size and volume fraction leaded to the dynamic yielding strength increased but the plasticity decreased. For a same composite, e.g. T1 alloy, the yielding strengths increased slightly but fracture strain decreased with increasing of dynamic strain rates.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Y.S. Wang, G.J. Hao, R. Ma, Y. Zhang, J.P. Lin, Z.H. Wang, J.W. Qiao,