Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1575758 | Materials Science and Engineering: A | 2013 | 7 Pages |
Abstract
The effect of pre-loading on the compressive behavior of a ductile Cu48Zr48Al4 bulk metallic glass composite (BMGC) containing a B2-CuZr phase was investigated by a lateral pre-compression method. It was found that noticeable plasticity and fracture strength degradations occurred for the BMGC after the lateral pre-compression. The degraded mechanical properties of the BMGC were correlated with the martensitic transformation from B2-CuZr phase to B19â²-CuZr phase induced by the pre-compression. Based on the compressive behavior of the B2-CuZr and B19â²-CuZr phases, influences of the two crystalline phases on the shear band multiplication in the BMGC were compared. It is expected that the pre-martensitic transformation of the B2-CuZr phase during the pre-compression would reduce the contribution of the martensitic transformation on the mechanical properties of the BMGC during subsequent compression, causing degradations of its plasticity and work-hardening-like characteristics. The results suggest that mechanical prehistory of the CuZr-based BMGC may be an important factor on its subsequent mechanical behavior.
Keywords
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
R. Wei, Y. Chang, Y.F. Li, G. Li, S. Yang, C.J. Zhang, L. He,