J Mater Sci Technol ›› 1999, Vol. 15 ›› Issue (05): 427-430.

• Research Articles • Previous Articles     Next Articles

Preliminary Investigation of NiAl-TiB2 Composite Prepared by Reaction Milling

Lanzhang ZHOU, Jianting GUO   

  1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China
  • Received:1998-07-30 Revised:1998-11-06 Online:1999-09-28 Published:2009-10-10
  • Contact: Lanzhang ZHOU

Abstract: Reaction-milled NiAl-TiB2 composite was fabricated by mechanical alloying elemental powders and hot pressing. TiB2 particles are distributed mostly in grain boundaries of the matrix. The compressive strain to failure of the composite at RT is about twice that of cast NiAl. The compressive yield stress at high temperatures is about 4.5 times higher than that of extruded NiAl, and is also much stronger than XD NiAl-TiB2 composites. Deformation behavior between 1000-1100℃ with different strain rates has been investigated.

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