High glass-forming CeCuFeAlSi bulk metallic glass alloys

✍ Scribed by Zan Bian; Akihisa Inoue

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 365 KB
• Volume: 449-451
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.01.156

✦ Synopsis

New Ce Cu Fe Al Si bulk metallic glasses (BMGs) with large supercooled liquid regions ( T x , T x = T x -T g , where T g is the glass transition temperature and T x is the crystallization temperature) and high glass formation ability (GFA) were developed. Both Fe and Si elements are very effective to improve the GFA and enlarge T x of Ce-based BMGs. The T x in the Ce Cu Fe Al Si alloys reaches to 95 K and BMG rods could be prepared with diameters of 10 mm. In the Ce Cu Al Fe alloys, T g , T x and T x increase with increasing Fe content. The reduced glass transition temperatures (T rg = T g /T l , T l is the liquid temperature) of the present alloys are about 0.5-0.6 and thus much lower than those of other base BMG systems with high GFA.