High strength and ductile bulk quasi-crystalline alloys

Authors
Citation
A. Inoue, High strength and ductile bulk quasi-crystalline alloys, ADV ENG MAT, 3(9), 2001, pp. 669-673
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
ADVANCED ENGINEERING MATERIALS
ISSN journal
1438-1656 → ACNP
Volume
3
Issue
9
Year of publication
2001
Pages
669 - 673
Database
ISI
SICI code
1438-1656(200109)3:9<669:HSADBQ>2.0.ZU;2-Y
Abstract
Quinary Zr-Al-Ni-Cu-(Ag or Pd) amorphous alloys exhibit a double-stage devi trification on heating. Primary devitrification leads to the precipitation of nanoscale icosahedral particles with a size from 20 to 50 nm. High nucle ation and low growth rates are obtained in a polymorphous mode for the Ag-c ontaining alloys and a diffusion-controlled mode for the Pd-containing allo ys. The nanoscale mixed structure alloys exhibit improved strength and duct ility as compared to the corresponding amorphous single-phase alloys.