Metallic glass matrix composites

Abstract

The mechanical properties of ex-situ and in-situ metallic glass matrix composites (MGMCs) have proven to be both scientifically unique and of potentially important for practical applications. However, the underlying deformation mechanisms remain to be studied. In this article, we review the development, fabrication, microstructures, and properties of MGMCs, including the room-temperature, cryogenic-temperature, and high-temperature mechanical properties upon quasi-static and dynamic loadings. In parallel, the deformation mechanisms are experimentally and theoretically explored. Moreover, the fatigue, corrosion, and wear behaviors of MGMCs are discussed. Finally, the potential applications and important unresolved issues are identified and discussed.

Mechanical Properties of an Fe‐Based SAM2×5‐630 Metallic Glass Matrix Composite with Tungsten Particle Additions

“…[8,[12][13][14][15][16] The addition of second phase particles to the metallic glass is a promising method to hinder propagation of a single shear band leading to catastrophic failure and to promote the formation of multiple shear bands that propagate collectively to enable plastic flow. [12][13][14]16] There are two ways to introduce the secondary phase, either by an in situ phase precipitated during cooling from the melt or by an ex situ addition of crystalline particles into the BMG matrix. [17] Both of these methods have successfully improved the tensile strainto-failure of BMGs.…”

Antimicrobial and wear performance of Cu-Zr-Al metallic glass composites

“…The major drawbacks for using these materials are their relatively low hardness and low wear resistance. These properties can be increased when the alloys are in an amorphous/crystalline state (i.e., metallic glass composites) [7,8]. This can be accomplished by developing new alloys with increased glass forming ability (GFA) through alloying Cu with other elements, especially with Zr and Al.…”

Tuning plasticity of in-situ dendrite metallic glass composites via the dendrite-volume-fraction-dependent shear banding

“…Bulk metallic glasses (BMGs) have attracted extensive interests due to their remarkable properties, such as high strength, extraordinary hardness, and excellent wear resistance [1][2][3][4][5]. However, at room temperature, BMGs usually undergo the plastic flow localization into nanoscale shear bands [6][7][8][9].…”