Microstructure and elevated-temperature strength of P/M Al-V-Fe-M(M=Ti,Cr or Si) alloys containing quasicrystalline phase.

• Kimura Hisamichi

  Institute for materials Research, Tohoku University

• Inoue Akihisa

  Institute for materials Research, Tohoku University

• Sasamori Kenichiro

  Institute for materials Research, Tohoku University

• Kawamura Yoshihito

  Institute for materials Research, Tohoku University

• Onogi Teruaki

  YKK Sendai Institute of Material Science & Technology

• Kita Kazuhiko

  YKK Sendai Institute of Material Science & Technology

Bibliographic Information

Other Title

• 準結晶を含むＡｌ‐Ｖ‐Ｆｅ‐Ｍ（Ｍ＝Ｔｉ，Ｃｒ，Ｓｉ）合金Ｐ／Ｍ材の組織と耐熱強度
• ジュンケッショウ オ フクム Al V Fe M M Ti Cr Si ゴウキ

Abstract

Powder metallurgy (P/M) alloys of AVFT(Al-6.4%V-4.2%Fe-1.7%Ti)-26P/M, AVFT-75P/M, AVFT-125P/M, AVCF(Al-2.9%V-3.8%Cr-4.3%Fe)-26P/M, AVCF-125P/M, AVFS(Al-6.5%V-3.6%Fe-1.6%Si)-125P/M and AVN(Al-6.7%V-4.1%Ni)-125P/M were prepared by extruding gas atomized powders with the sizes smaller than 26μm, 75μm or 125μm at 673 K. The constituent structure was Q.C. (quasicrystalline)+fcc-Al(Al)+Al₁₁V+Al₁₃Fe₄+Al₂₃Ti₉ for the AVFT-P/M alloy, Q.C.+A1 for the AVCF-P/M alloy, Q.C.+Al+Al₁₁V+Al₁₃Fe₄ for the AVFS-P/M alloy and Q.C.+Al+Al₁₁V+Al₃Ni for the AVN-P/M alloy. The quasicrystalline particles in the P/M alloys have an icosahedral structure and their particle size is about 500 nm. The ultimate tensile strength (σUTS), plastic elongation (εP), Young's modulus (E) and Vickers hardness (Hv) of the P/M alloys are in the range of 430 to 570 MPa, 3.3 to 7.3%, 80 to 91 GPa and 150 to 192, respectively, at room temperature. The ours, 0.2% proof strength (σ_0.2) and εp at 573 K are 191 to 316 MPa, 171 to 298 MPa and 5.2 to 23.4 %, respectively. The wear rate of the AVFS-125P/M alloy decreases with increasing the sliding velocity (Vs) from 3.5×10^-7 mm²/kg at Vs=0.5 m/s to 2.6×10^-7 mm²/kg at Vs=2.0 m/s.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 45 (9), 817-823, 1998

  Japan Society of Powder and Powder Metallurgy

Keywords

• aluminum-base alloy
• quasicrystalline particle
• powder metallurgy
• elevated-temperature strength
• wear resistance

Details

• CRID: 1390282681285987968
• NII Article ID: 10002052752
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.45.817
• COI: 1:CAS:528:DyaK1cXmvVKlsr4%3D
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 4566303
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4566303
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed