The following article is based on the MRS Medal talk presented by William L. Johnson at the
1998 MRS Fall Meeting on December 2, 1998. The MRS Medal is awarded for a specific …

For thousands of years, metallic alloys have been among the most important materials used
by mankind, and their importance as engineering materials remains as great now as ever …

The development of new metallic alloys which form bulk glasses at low cooling rates has led
to significant advances in the study of undercooled liquid metals and the glass transition in …

In the last decade metallic glasses have regained considerable interest due to the fact that
new glass-forming compositions have been found that have a critical cooling rate of less …

Glassy alloys (metallic glasses) are currently the focus of intense research in the
international metals community. Setting aside elevated-temperature applications, these …

Bulk metallic glass-forming liquids are alloys with typically three to five metallic components
that have a large atomic-size mismatch and a composition close to a deep eutectic. They are …

During the past several years, a number of multicomponent alloy families have been
investigated in which the liquid alloys form metallic glass at cooling rates below 1000 K/s …

Metallic glasses, first reported in 1960, are solid alloys that are not crystalline, having an
atomic arrangement inherited directly from the liquid state. At first it was considered that a …

Creating a glass is akin to racing against a thermodynamic clock. The clock begins ticking
when a liquid is cooled below its melting temperature T M. Typically, as the supercooled …

The last ten years have seen the discovery of amorphous metal alloys that are glass forming
at cooling rates as slow as 1° C s− 1 to 100° C s− 1 in the bulk via conventional metal …