Formation of Ternary L12 Intermetallic Compound and Phase Relation in the Al-Ti-Fe System

DOI Web Site Web Site 参考文献90件 オープンアクセス
  • Mabuchi Hiroshi
    Department of Metallurgy and Materials Science, College of Engineering, Osaka Prefecture University
  • Nagayama Hitoshi
    Department of Metallurgy and Materials Science, College of Engineering, Osaka Prefecture University
  • Tsuda Hiroshi
    Department of Metallurgy and Materials Science, College of Engineering, Osaka Prefecture University
  • Matsui Toshiyuki
    Department of Metallurgy and Materials Science, College of Engineering, Osaka Prefecture University
  • Morii Kenji
    Department of Metallurgy and Materials Science, College of Engineering, Osaka Prefecture University

書誌事項

タイトル別名
  • Formation of Ternary L1<SUB>2</SUB> Intermetallic Compound and Phase Relation in the Al–Ti–Fe System
  • Formation of Ternary L1<SUB>2</SUB> Intermetallic Compound and Phase Relation in the Al&ndash;Ti&ndash;Fe System

この論文をさがす

説明

Sintering of elemental powders and conventional arc-melting were used to form ternary L12 intermetallic compounds in the Al–Ti–Fe system. The L12 phase field and phase equilibria surrounding the L12 phase in the temperature range of interest were established. Two isothermal sections at 1423 and 1273 K were determined from metallography, X-ray diffraction and electron probe microanalyses. The compositions of L12 phase field, the center compositions of oval-shaped region, were about 28Ti–8Fe–64Al and 27Ti–9Fe–64Al compositions at 1423 and 1273 K, respectively. Thus the L12 phases had less ternary and more titanium than those reported in the other Al–Ti–X (X=Mn, Cr) systems. Besides the L12 phase, the pertinent second phases were TiAl (L10-type), TiAl2 (HfGa2-type), Ti2Al5 (28 atoms/unit cell-type), Al3Ti (D022-type), C14 (Laves phase, MgZn2-type), and D8a (cubic, Mn23Th6-type). The solubility of iron in TiAl2 phase was about 2 and 3 mol% at 1423 and 1273 K, respectively. The TiAl2 phase is more stable at 1273 K and can coexist with L12, TiAl, C14, and D8a phases in separate phase fields. Thus in the isothermal section at 1273 K, no two-phase equilibrium between the TiAl and L12 phases exists. This impedes the development of bonding between TiAl and L12 alloys in coating applications.

収録刊行物

参考文献 (90)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ