Fabrication of Bulk Metallic Glass Composites at Low Processing Temperatures

Karl F. Shamlaye; Kevin J. Laws; Michael Ferry

doi:10.4028/www.scientific.net/MSF.773-774.461

Paper Titles

Optimization of Cutting Parameters for End Milling AlSi/AlN Metal Matrix Composite Using the Taguchi Method
p.429

Machinability of Aluminum Nitride Ceramic Using TiAlN and TiN Coated Carbide Tool Insert
p.437

Mechanical Properties of Highly Filled Iron-ABS Composites in Injection Molding for FDM Wire Filament
p.448

Slurry Erosive Wear Behavior of Hot Extruded Al6061-Si₃N₄ Composite
p.454

Fabrication of Bulk Metallic Glass Composites at Low Processing Temperatures
p.461

Optimization of Glass Forming Ability of Al-Ni-Si Alloys by a Thermodynamic and Kinetic Approach
p.466

A Highly Efficient Activated Carbon by Chemical Activation Method for Adsorption of Paraquat (Toxin)
p.471

Modeling of the Behavior of an Aluminum Metallic Foam by Both FEM and Experimental Results
p.478

Measuring the Mechanical Properties of Ground Ophthalmic Polymer Surfaces Using Nanoindentation
p.488

HomeMaterials Science ForumMaterials Science Forum Vols. 773-774Fabrication of Bulk Metallic Glass Composites at...

Fabrication of Bulk Metallic Glass Composites at Low Processing Temperatures

Abstract:

Bulk metallic glasses (BMGs) are amorphous alloys that exhibit unique mechanical properties such as high strength due to their liquid-like structure in the vitreous solid state. While they usually exhibit low ductility, they can be toughened by incorporating secondary phase particles within the amorphous matrix via composite fabrication to generate amorphous metal matrix composites (MMCs). Traditional MMCs are fabricated at high temperature in the liquid state with tedious blending processes. This high temperature processing route often leads to unwanted reactions at the reinforcement/matrix interface, creating brittle intermetallic by-products and damaging the reinforcement. In the present work, novel bulk metallic glass composites (BMGCs) were fabricated at low processing temperatures via thermoplastic forming (TPF) above the glass transition temperature of the amorphous matrix. Here, the unique thermophysical features of the matrix material allow for TPF of composites in non-sacrificial moulds incorporating various types of reinforcement, via processing in the solid state at low temperatures (less than 200 °C), within a short timeframe (less than 10 minutes); this avoids the formation of brittle phases at the reinforcement/matrix interface leading to efficient bonding between particles and matrix, thereby creating a tough, low density composite material.