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Effect of Microstructure on the Mechanical Properties of Be-Free Zr-Based Bulk Metallic Glasses (BMG) and Tungsten Fiber Reinforced Metallic Glass Matrix Composites

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Abstract

In the present study, Be-free Zr-based bulk metallic glasses (Zr46Cu36Ag8Al8, Zr52Ti6Al10Cu18Ni14 and Zr62.5Cu22.5Fe5Al10) and tungsten fiber reinforced Be-free Zr-metallic glass matrix composites were produced using suction casting and melt infiltration techniques, respectively. X-ray diffraction and transmission electron microscopy analyses revealed that the structure of the BMG’s was completely amorphous, whereas in composites the matrix contained crystalline phases (Zr2Cu and Al2Zr) along with the amorphous phase. Mechanical properties of composites were found to be superior to those of BMGs, due to the generation of multiple shear bands in the composites caused by the presence of tungsten fibers and crystalline phases in the metallic glass matrix. The present study shows that if the matrix in the composite is partly crystalline consisting of ductile crystalline phase in the amorphous matrix will have better properties than the fully amorphous matrix composites.

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Acknowledgements

The work is funded by Department of Atomic Energy, Government of India.

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  1. R. Tewari

    Present address: Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India

Authors and Affiliations

  1. Materials Science Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India

    B. Vishwanadh

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  1. B. Vishwanadh
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  2. R. Tewari
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Correspondence to B. Vishwanadh.

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Vishwanadh, B., Tewari, R. Effect of Microstructure on the Mechanical Properties of Be-Free Zr-Based Bulk Metallic Glasses (BMG) and Tungsten Fiber Reinforced Metallic Glass Matrix Composites. Trans Indian Inst Met 75, 997–1005 (2022). https://doi.org/10.1007/s12666-022-02541-5

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