Abstract: A class of alloys is provided that form metallic glass upon cooling below the glass transition temperature Tg at a rate below 100° K/sec. The alloys have a high value of temperature difference (DT) between the crystallization temperature (Tx) and the glass transition temperature (Tg) of the intermetallic alloy. Such alloys comprise zirconium in the range of 70 to 80 weight percent, beryllium in the range of 0.8 to 5 weight percent, copper in the range of 1 to 15 weight percent, nickel in the range of 1 to 15 weight percent, aluminum in the range of 1 to 5 weight percent and niobium in the range of 0.5 to 3 weight percent, or narrower ranges depending on other alloying elements and the critical cooling rate and value of DT desired. Furthermore, methods are provided for making such metallic glasses.
Type:
Grant
Filed:
August 23, 2013
Date of Patent:
November 22, 2016
Assignees:
Heraeus Deutschland GmbH & Co. KG, Heraeus Materials Technology North America LLC
Inventors:
Hans Jürgen Wachter, Frank Krüger, Bernd Kunkel, Xiaoyun Wang, Doug Shearer