Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys
Glass forming ability (GFA) in the Pr-rich Pr-(Cu, Ni)-Al alloys at or near the eutectic points was systematically studied. It was found that the GFA in the pseudo-ternary alloys of Pr-(Cu, Ni)-Al is higher than that of the ternary alloys of Pr-Cu-Al. Two eutectic compositions in Pr-(Cu, Ni)-Al allo...
| Main Authors: | , |
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| Format: | Article |
| Language: | en_US |
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2003
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| Online Access: | http://hdl.handle.net/1721.1/3974 |
| _version_ | 1826202582611132416 |
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| author | Zhang, Yong Li, Yi |
| author_facet | Zhang, Yong Li, Yi |
| author_sort | Zhang, Yong |
| collection | MIT |
| description | Glass forming ability (GFA) in the Pr-rich Pr-(Cu, Ni)-Al alloys at or near the eutectic points was systematically studied. It was found that the GFA in the pseudo-ternary alloys of Pr-(Cu, Ni)-Al is higher than that of the ternary alloys of Pr-Cu-Al. Two eutectic compositions in Pr-(Cu, Ni)-Al alloys were found by DSC, namely, Pr₆₈(Cu₀.₅Ni₀.₅)₂₅Al₇ and Pr₅₂(Cu₀.₅Ni₀.₅)₂₅Al₂₃ (at %). The later one shows better GFA than the first one. However, the best GFA was obtained at an off-eutectic composition of Pr₅₄(Cu₀.₅Ni₀.₅)₃₀Al₁₆, which can be formed in fully amorphous rod with diameter of 1.5 mm by copper mould casting. The deviation of the best GFA composition from the eutectic point [Pr₆₈(Cu₀.₅Ni₀.₅)₂₅Al₇] was explained in terms of the asymmetric coupled eutectic zone and the higher glass transition temperature Tg on the hypereutectic side. |
| first_indexed | 2024-09-23T12:09:56Z |
| format | Article |
| id | mit-1721.1/3974 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:09:56Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | mit-1721.1/39742019-04-12T08:36:54Z Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys Zhang, Yong Li, Yi bulk metallic glasses Pr-based alloy ternary eutectic coupled eutectic zone Glass forming ability (GFA) in the Pr-rich Pr-(Cu, Ni)-Al alloys at or near the eutectic points was systematically studied. It was found that the GFA in the pseudo-ternary alloys of Pr-(Cu, Ni)-Al is higher than that of the ternary alloys of Pr-Cu-Al. Two eutectic compositions in Pr-(Cu, Ni)-Al alloys were found by DSC, namely, Pr₆₈(Cu₀.₅Ni₀.₅)₂₅Al₇ and Pr₅₂(Cu₀.₅Ni₀.₅)₂₅Al₂₃ (at %). The later one shows better GFA than the first one. However, the best GFA was obtained at an off-eutectic composition of Pr₅₄(Cu₀.₅Ni₀.₅)₃₀Al₁₆, which can be formed in fully amorphous rod with diameter of 1.5 mm by copper mould casting. The deviation of the best GFA composition from the eutectic point [Pr₆₈(Cu₀.₅Ni₀.₅)₂₅Al₇] was explained in terms of the asymmetric coupled eutectic zone and the higher glass transition temperature Tg on the hypereutectic side. Singapore-MIT Alliance (SMA) 2003-12-20T19:36:41Z 2003-12-20T19:36:41Z 2002-01 Article http://hdl.handle.net/1721.1/3974 en_US Advanced Materials for Micro- and Nano-Systems (AMMNS); 609888 bytes application/pdf application/pdf |
| spellingShingle | bulk metallic glasses Pr-based alloy ternary eutectic coupled eutectic zone Zhang, Yong Li, Yi Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys |
| title | Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys |
| title_full | Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys |
| title_fullStr | Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys |
| title_full_unstemmed | Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys |
| title_short | Glass Forming Ability in Pr-(Cu, Ni)-Al Alloys |
| title_sort | glass forming ability in pr cu ni al alloys |
| topic | bulk metallic glasses Pr-based alloy ternary eutectic coupled eutectic zone |
| url | http://hdl.handle.net/1721.1/3974 |
| work_keys_str_mv | AT zhangyong glassformingabilityinprcunialalloys AT liyi glassformingabilityinprcunialalloys |