Deformation-Induced Martensitic Transformation in Cu-Zr-Zn Bulk Metallic Glass Composites

The microstructures and mechanical properties of (Cu0.5Zr0.5)100−xZnx (x = 0, 1.5, 2.5, 4.5, 7, 10, and 14 at. %) bulk metallic glass (BMG) composites were studied. CuZr martensitic crystals together with minor B2 CuZr and amorphous phases dominate the microstructures of the as-quenched samples with...

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Bibliographic Details
Published in:Metals (Basel ) 2015-12, Vol.5 (4), p.2134-2147
Main Authors: Wu, Dianyu, Song, Kaikai, Cao, Chongde, Li, Ran, Wang, Gang, Wu, Yuan, Wan, Feng, Ding, Fuli, Shi, Yue, Bai, Xiaojun, Kaban, Ivan, Eckert, Jürgen
Format: Article
Language:English
Subjects:
composites
martensitic transformation
metallic glasses
rapid solidification
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Summary:The microstructures and mechanical properties of (Cu0.5Zr0.5)100−xZnx (x = 0, 1.5, 2.5, 4.5, 7, 10, and 14 at. %) bulk metallic glass (BMG) composites were studied. CuZr martensitic crystals together with minor B2 CuZr and amorphous phases dominate the microstructures of the as-quenched samples with low Zn additions (x = 0, 1.5, and 2.5 at. %), while B2 CuZr and amorphous phases being accompanied with minor martensitic crystals form at a higher Zn content (x = 4.5, 7, 10, and 14 at. %). The fabricated Cu-Zr-Zn BMG composites exhibit macroscopically appreciable compressive plastic strain and obvious work-hardening due to the formation of multiple shear bands and the deformation-induced martensitic transformation (MT) within B2 crystals. The present BMG composites could be a good candidate as high-performance structural materials.
ISSN:2075-4701
2075-4701
DOI:10.3390/met5042134