Synthesis and property of short tungsten fibre/Zr-based metallic glass composite

ABSTRACT

The short tungsten fibre reinforced Zr_41.2Ti_13.8Ni_10.0Cu_12.5Be_22.5 bulk metallic glass composites with macroscopic isotropic mechanical properties were prepared by infiltration and rapid solidification. The diameters of the tungsten fibres are 300, 500 and 700 µm with a length of 1000 µm and the fibre volume fraction in three kinds of composites is between 60 and 65%. The room temperature compressive deformation behaviours of these composites were investigated systematically. The results show that the strength and plasticity of the composites increase with the decrease in the tungsten fibre diameter. The maximum compressive strength and plastic strain of the composite with 300 µm fibre, respectively, reach 3079 MPa and 37%. The fracture modes of all the composites are shear fracture. The superior compressive property of the composites with short tungsten fibre is due to the competition among different fracture modes and the inhibition effect of the interface on the shear band extension.

KEYWORDS:

• Metallic glass composite
• short tungsten fibre
• fracture mode
• shear band
• interface

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China [grant numbers 51401131, 51771049 and 51601057], the Natural Science Foundation of Liaoning province [20180510048].