The thermal stability and glass forming ability of Cu50-xZr 43Al7Agx (x=0, 1, 3, 5, and 7) bulk metallic glass alloys have been investigated. The glass forming ability in the Cu-Zr-Al-Ag alloys increased proportionally to the Ag content and show good correlations with thermal parameters such as ΔTx(=T X-Tg), Trg(=Tg/Tl) and γ(=Tx/(Tg+Tl)), For the Cu 43Zr43Al7Ag7 alloy, fully amorphous rods of 8 mm diameter were successfully fabricated by copper mold casting. Mechanical tests on this composition revealed also remarkable properties with compressive strength around 2000 MPa and large ductility.
Bibliographical noteFunding Information:
This research was supported by a grant(code #: 04K1501-00510) from the Center for Nanostructured Materials Tech- nology under the 21st Century Frontier R&D Programs of the Korean Ministry of Science and Technology, and the Korea Institute of Science and Technology (KIST). One of the author (D. H. Kim) is also thankful for the partial financial support from Creative Research Initiatives of the Korean Ministry of Science and Technology, Republic of Korea.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry