Effects of Iron on Combustion Synthesis of NiAl/TiC Composites.

• Tsuda Hiroshi

  Department of Metallurgy and Materials Science, Osaka Prefecture University

• Nishimura Tomoyoshi

  Graduate School, Osaka Prefecture University

• Mabuchi Hiroshi

  Department of Metallurgy and Materials Science, Osaka Prefectur University, and Research Institute for Advanced Science and Technology, Osaka Prefecture University

• Nakayama Yutaka

  Department of Metallurgy and Materials Science, Osaka Prefecture University

Bibliographic Information

Other Title

• ＮｉＡｌ／ＴｉＣ複合材料の燃焼合成に及ぼすＦｅ添加の影響
• NiAl TiC フクゴウ ザイリョウ ノ ネンショウ ゴウセイ ニ オヨボス

Abstract

In order to enhance the negligible low-temperature ductility and low high-temperature strength of nickel aluminides, NiAl/TiC composites were fabricated by the combustion reaction process from elemental powders. In this study, the effects of Fe on the combustion reaction of Ni-Al-Ti-C system were studied and mechanical properties of NiAl/TiC composites prepared by the combustion reaction process, following arc-melting were also estimated. The matrix compositions of the alloys included Ni₅₀Fe₁₀Al₄₀, Ni₅₀Fe₂₀Al₃₀ and Ni₂₅Fe₅₀Al₂₅, with TiC of 0-50 at%, respectively.<BR>The addition of Fe significantly reduced the heat of formation during the combustion reaction in Ni-Al-Ti-C system. Resulting compacts consisted of small TiC particles of about 0.5μm and the matrix NiAl. In the arc-melted and annealed specimens, TEM observation revealed that γ-Ni phase appeared on the grain boundaries in Ni₅₀Fe₁₀Al₄₀ alloys, and α -Fe phase precipitated in the matrix in Ni₂₅Fe₅₀Al₂₅ alloys. For Ni₅₀Fe₁₀Al₄₀ alloys, ductility in bending increased because of the γ-Ni phase. The other hand, for Ni₂₅Fe₅₀Al₂₅ alloys, compressive strength pronouncedly increased at ambient and elevated temperatures, caused to the presence of α-Fe phase and TiC particles in the matrix.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 43 (3), 283-288, 1996

  Japan Society of Powder and Powder Metallurgy

Keywords

• NiAl-based composites
• combustion reaction
• addition of iron
• Ni-Al-Ti-C system
• mechanical properties

Details

• CRID: 1390001206309111552
• NII Article ID: 10002011509
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.43.283
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 3936691
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3936691
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed