ENHANCED HETEROGENEOUS NUCLEATION OF ALPHA-AL IN AMORPHOUS ALUMINUM-ALLOYS

Authors
SCHUMACHER P GREER AL
Citation
P. Schumacher et Al. Greer, ENHANCED HETEROGENEOUS NUCLEATION OF ALPHA-AL IN AMORPHOUS ALUMINUM-ALLOYS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 182, 1994, pp. 1335-1339
Citations number
12
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
182
Year of publication
1994
Pages
1335 - 1339
Database
ISI
SICI code
0921-5093(1994)182:<1335:EHNOAI>2.0.ZU;2-8
Abstract
The low atomic mobility in metallic glasses such as amorphous aluminiu m alloys permits the isothermal study of heterogeneous nucleation. The action of conventional grain-refining additions containing Al3Ti and TiB2 has been investigated microscopically in a devitrification study of Al85Y8Ni5Co2. Particles of TiB2 with a thin coating of Al3Ti are th e nucleating agent; copious nucleation of alpha-Al occurs on the (001) faces of these particles.