Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
권호 표지

Mechanical Alloying Behavior and Microstructures of Extrudate in Al-Ti-(Si) Base Alloys

A1-Ti-(Si)계 합금의 기계적 합금화 및 성형체의 미세조직

  • 최철진 (한국기계연구원 재료공정연구부)
  • Published : 1995.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Alloying behavior of nanocrystalline Al-Ti-(Si) composite powders via mechanical alloying (MA) has been investigated, and the effect of Si on the microstructural changes during MA was discussed. The microstructures of both MA powders and extruded compacts were examined. In Al-Ti system, the solid solutionized nanocrystalline powders could be obtained by MA. On the contrary, fine Si particles were embedded as an elemental state in the matrix of Al-Ti-Si system because of the brittleness and the negligible solid solubility of Si in Al. After hot extrusion, $Al3Ti$ phase was finely precipitated in Al-10fSTi alloy, and Si particles were dissolved to form $(Al, Si)_3Ti$ phase in Al-10%Ti-2%Si alloy.

Keywords

References

  1. Metall. Trans. v.A16 T.F.Broderick;A.K.Jackson
  2. Trans. AIME v.133 W.L.Fink;L.A.Willy
  3. J. Int. Met. v.101 K.Asboll;N.Ryum
  4. Ph.D. Dissertation, Drexel Univ. W.E.Frazier
  5. Dispersion Strengthened Aluminum Alloys J.A.Hawk;P.K.Mirchandani;R.C.Benn;H.G.F.Wilsdorf;Y.W.Kim(ed.);W.M.Griffith(ed.)
  6. Scr. Metall v.21 W.E.Frazier;M.J.Koczak
  7. Scr. Metall v.23 J.K.Hawk;K.P.Lawless;H.G.F.Wilsdorf
  8. U.S. Patent, 5,169,461 A.S.Watwa;P.K.Mirchandani;W.E.Mattson
  9. X-ray Diffraction Proceedures H.P.Klug;L.E.Alexander
  10. J. Appl. Phys. v.65 E.Hellstern;H.J.Fecht;Z.Fu;W.L.Johnson
  11. Ann. Rev. Mater. Sci. v.18 D.A.Rigney
  12. Z. Phys. Chem. v.157 L.Schultz;E.Hellstern;G.Zorn
  13. Aluminum Alloys-Structure and Properties L.F.Mondolofo