Crystallization processes from supercooled liquid of CU40Ti30Ni15Zr10Sn5 and Zr60Ni25Al15 amorphous alloys

Citation
Cf. Li et al., Crystallization processes from supercooled liquid of CU40Ti30Ni15Zr10Sn5 and Zr60Ni25Al15 amorphous alloys, MAT SCI E A, 304, 2001, pp. 380-384
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
0921-5093 → ACNP
Volume
304
Year of publication
2001
Pages
380 - 384
Database
ISI
SICI code
0921-5093(20010531)304:<380:CPFSLO>2.0.ZU;2-3
Abstract
This paper is intended to investigate the effect of additional solute eleme nts on the glass-forming ability by studying the crystallization processes of Cu40Ti30Ni15Zr10Sn5 and Z(60)Ni(25)Al(15) amorphous alloys ill the super cooled liquid region, The crystallization of Cu40Ti30Ni15Zr10Sn5 amorphous ahoy takes place through the reactions of Am --> CuTi + Cu10Zr7 --> Cu10Zr7 + Cu3Ti + CuTi2 + Cu2Ti. Enrichment of Sn in the Cu10Zr7 phase was reveale d by compositional analysis. On the other hand, the crystallization of Zr60 Ni25Al15 amorphous alloy takes place through the reaction of Am --> Zr5Ni4A l + Zr6NiAl2. The common feature in the crystallization processes or; the t wo alloys is the necessity of significant redistribution of the solute elem ents (Sn or Al), which is believed to play an important role in the stabili ty of the supercooled liquid against crystallization. (C) 2001 Elsevier Sci ence B.V. All rights reserved.