Multicomponent Si-based amorphous alloys produced by melt spinning and their crystallization behaviour

D. V. Louzguine, A. Inoue

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

By the addition of some definite transition metals Ni, Cr and Zr to the Si-Al-Fe system, the maximum Si content for formation of an amorphous single phase was extended to 50 and 55 at% Si. The Si-based amorphous alloys are characterized by high values of electrical resistivity (11.7-12.3 μΩm) and hardness (∼ 930 HV). Their crystallization temperatures exceed 700 K, which is higher by about 100 K than those for Si45Al-Fe-Cr and Si45Al-Fe-Ni quaternary alloys. During heat treatment of an amorphous Si55Al20Fe10Ni5Cr5Zr 5 alloy at the temperature above the crystallization temperature, a 6-component Si10Al4Fe2NiCrZr phase with a tetragonal structure having lattice parameters a=0.6890 nm and c=0.9402 nm is formed as a main constituent phase. The difficulty of the precipitation of the multicomponent crystalline phase with the large volume of unit cell during rapid solidification is presumed to be the main reason for the formation of the Si-based amorphous phase.

Original languageEnglish
Pages (from-to)1095-1099
Number of pages5
JournalMaterials Transactions, JIM
Volume38
Issue number12
DOIs
Publication statusPublished - 1997 Dec

Keywords

  • Crystallization behaviour
  • Intermetallic compound
  • Multicomponent phase
  • Rapidly solidified phase
  • Silicon-based amorphous alloy

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'Multicomponent Si-based amorphous alloys produced by melt spinning and their crystallization behaviour'. Together they form a unique fingerprint.

Cite this