Effect of Si addition on the formability of the icosahedral quasicrystalline phase in an Al65Cu20Fe15 alloy

S. M. Lee, B. H. Kim, S. H. Kim, E. Fleury, W. T. Kim, D. H. Kim

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

The effect of Si addition on the icosahedral forming Al65Cu20Fe15 alloy was investigated. Conventional casting and melt spinning were employed with the addition of Si element. As Si was added up to 5 at.% replacing the Al atoms, the volume fraction of the i-phase gradually decreased. However, with increasing Si content further up to 15 at.%, an 1/1 cubic approximant phase formed instead of the i-phase. After heat treatment at 750 °C for 3 h, the volume fraction of the β-phase increased in an Al64Cu20Fe15Si1 alloy, while the volume fraction of the 1/1 approximant phase increased in an Al50Cu20Fe15Si15 alloy. The Al50Cu20Fe15Si15 alloy showed a relatively high hardness and fracture toughness compared to the other Si containing Al-Cu-Fe alloys.

Original languageEnglish
Pages (from-to)93-98
Number of pages6
JournalMaterials Science and Engineering A
Volume294-296
DOIs
Publication statusPublished - 2000 Dec 15

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Formability
Volume fraction
melt spinning
Melt spinning
toughness
fracture strength
metal spinning
Fracture toughness
Casting
heat treatment
hardness
Hardness
Heat treatment
Atoms
atoms

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lee, S. M. ; Kim, B. H. ; Kim, S. H. ; Fleury, E. ; Kim, W. T. ; Kim, D. H. / Effect of Si addition on the formability of the icosahedral quasicrystalline phase in an Al65Cu20Fe15 alloy. In: Materials Science and Engineering A. 2000 ; Vol. 294-296. pp. 93-98.
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Effect of Si addition on the formability of the icosahedral quasicrystalline phase in an Al65Cu20Fe15 alloy. / Lee, S. M.; Kim, B. H.; Kim, S. H.; Fleury, E.; Kim, W. T.; Kim, D. H.

In: Materials Science and Engineering A, Vol. 294-296, 15.12.2000, p. 93-98.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of Si addition on the formability of the icosahedral quasicrystalline phase in an Al65Cu20Fe15 alloy

AU - Lee, S. M.

AU - Kim, B. H.

AU - Kim, S. H.

AU - Fleury, E.

AU - Kim, W. T.

AU - Kim, D. H.

PY - 2000/12/15

Y1 - 2000/12/15

N2 - The effect of Si addition on the icosahedral forming Al65Cu20Fe15 alloy was investigated. Conventional casting and melt spinning were employed with the addition of Si element. As Si was added up to 5 at.% replacing the Al atoms, the volume fraction of the i-phase gradually decreased. However, with increasing Si content further up to 15 at.%, an 1/1 cubic approximant phase formed instead of the i-phase. After heat treatment at 750 °C for 3 h, the volume fraction of the β-phase increased in an Al64Cu20Fe15Si1 alloy, while the volume fraction of the 1/1 approximant phase increased in an Al50Cu20Fe15Si15 alloy. The Al50Cu20Fe15Si15 alloy showed a relatively high hardness and fracture toughness compared to the other Si containing Al-Cu-Fe alloys.

AB - The effect of Si addition on the icosahedral forming Al65Cu20Fe15 alloy was investigated. Conventional casting and melt spinning were employed with the addition of Si element. As Si was added up to 5 at.% replacing the Al atoms, the volume fraction of the i-phase gradually decreased. However, with increasing Si content further up to 15 at.%, an 1/1 cubic approximant phase formed instead of the i-phase. After heat treatment at 750 °C for 3 h, the volume fraction of the β-phase increased in an Al64Cu20Fe15Si1 alloy, while the volume fraction of the 1/1 approximant phase increased in an Al50Cu20Fe15Si15 alloy. The Al50Cu20Fe15Si15 alloy showed a relatively high hardness and fracture toughness compared to the other Si containing Al-Cu-Fe alloys.

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