Mechanical and corrosion behaviour of in situ intermetallic phases reinforced Mg-based glass composite

Abstract

A (Mg65Cu10Ni10Y10Zn5)91Zr9 bulk metallic glass matrix composite, reinforced by in situ formed intermetallic phase, has been fabricated. In contrast to the monolithic Mg-based bulk metallic glasses (BMGs), the composite showed much higher fracture strength of 1039 MPa and a significant plastic strain of more than 5%. Moreover, the effect of in situ formed intermetallic phase on the corrosion behaviour of the composite was also studied. The results indicated that the corrosion resistance of the composite was only slightly lower than that of the monolithic Mg-based BMGs, but still much higher than that of the AZ31 magnesium alloy. This finding gives us a new clue to enhance the mechanical properties and corrosion resistance of Mg-based alloy by designing appropriate metallic glass composites.

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

“…Compared with the corresponding bulk metallic glasses (BMGs), the bulk metallic glass composites (BMGCs) have better application prospects because of their favourable plastic deformation capacity at room temperature [1][2][3]. The preparation and properties of the ex-and in-situ BMGCs reinforced by brittle or ductile phases have their advantages and disadvantages.…”