Grain refinement in undercooled metals
Conference
·
OSTI ID:323433
- Chinese Univ. of Hong Kong, Shatin (Hong Kong). Physics Dept.
Recently, it was demonstrated that grain refinement in metals can take place through two mechanisms, namely, dynamic nucleation and remelting of initially formed dendrites. In this study, it was found that Ni{sub 99.45}B{sub 0.55} undergoes grain refinement, both by dynamic nucleation or by remelting, depending on the initial bulk undercooling just before crystallization. The nature of the grain refinement process is confirmed by microstructural analysis of the undercooled specimens.
- OSTI ID:
- 323433
- Report Number(s):
- CONF-971201--
- Country of Publication:
- United States
- Language:
- English
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