The effect of replacement of Zr/Hf with Gd or Y in Cu46Zr47Al7 and Cu50Hf42.5Al7.5 alloys has been investigated. Phase separation into Cu-Gd-rich (or Cu-Y-rich) and Cu-Zr-rich (or Cu-Hf-rich) amorphous phases occurs during cooling when the Gd (or Y) content is above 15 at.% in Cu-(Zr, Hf)-(Gd, Y)-Al alloys. In particular, it was realized that the plasticity in bulk metallic glass with heterogeneity can be enhanced either by tailoring the combinations of the constituent elements or by controlling the cooling rate.
|Number of pages||4|
|Publication status||Published - 2007 Jul|
Bibliographical noteFunding Information:
This work was supported by the Creative Research Initiatives of the Korean Ministry of Science and the Korea Research Foundation Grant funded by the Korean Government (MOEHRD), No. KRF-2006-214-D00066. The author is indebted to Prof. Frans Spaepen, Harvard University for thoughtful advice.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys