1. Microstructure Evolution of Ni-Co Alloys During Crystallization and Amorphization Process.
- Author
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Liang, Yong-chao, Ma, Rui-bo, Zhou, Li-li, He, Mu, Tian, Ze-an, and Mo, Yun-fei
- Subjects
METALLIC glasses ,AMORPHIZATION ,ALLOYS ,THREE-dimensional imaging ,MOLECULAR dynamics ,CRYSTALLIZATION ,SOLIDIFICATION ,PHASE transitions - Abstract
A molecular dynamics simulation has been conducted in Ni
73 Co27 and Ni74 Co26 alloys during rapid solidification at the cooling rate of 1 × 1012 K/s. It indicates that two phase transitions occur with twice drops, and the number of FCC increases suddenly in Ni73 Co27 alloy. And finally, FCC atoms are dominant with the amount of 92.94% at 300 K, which neatly arranges themselves into the crystalline structure. A lot of topologically close-packed clusters are formed in Ni74 Co26 alloy, indicating the formation of metallic glass. The differences between the formations in crystalline hexagon and amorphous pentagon are demonstrated by three-dimensional visualization. [ABSTRACT FROM AUTHOR]- Published
- 2021
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