Abstract
Ni-based metallic glasses containing no metalloids are developed in Ni-Zr-Nb-Al alloy system. A partial replacement of Zr with Nb in Ni-Zr-Al alloys significantly enhances the glass-forming ability (GFA) and enlarges the undercooled liquid region during continuous heating of glassy ribbons. A quaternary Ni-Zr-Nb-Al metallic glasses exhibit large undercooled liquid region (>50 K), indicating high glass-forming ability of the alloy. The glass transition and crystallization temperatures of a quaternary Ni 61Zr28Nb7Al4 alloy are 848 and 898 K, respectively, exhibiting a wide undercooled liquid region of 50 K. A complete Ni61Zr28Nb7Al4 glassy rod (φ1 mm) can be prepared by copper mold injection casting.
Original language | English |
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Pages (from-to) | 778-782 |
Number of pages | 5 |
Journal | Materials Letters |
Volume | 58 |
Issue number | 5 |
DOIs | |
State | Published - Feb 2004 |
Keywords
- Alloys
- Amorphous
- Melt spinning
- Nickel
- Undercooling