Tuning the microstructure and mechanical properties of Al-based amorphous/crystalline composites by addition of Pd

S. González, J. Sort, D. V. Louzguine-Luzgin, J. H. Perepezko, M. D. Baró, A. Inoue

研究成果: Article査読

11 被引用数 (Scopus)

抄録

The microstructure and mechanical properties of Al86Ni 6Y6-xCo2Pdx (x = 0, 0.5 and 1) rods, with a 1 mm diameter, have been investigated. The Al86Ni 6Y6Co2 alloy consists of ductile fcc-Al and hard Al3Ni intermetallic phases embedded in the matrix. Replacing Y by Pd in the Al86Ni6Y6Co2 alloy promotes precipitation of additional crystalline phases, producing composite materials with tuneable mechanical behaviour. Compared to conventional Al-based crystalline alloys, the Al86Ni6Y6Co2 rod is relatively hard (395 HV) but exhibits a brittle behaviour when compressed at room temperature. The compressive plasticity increases to 1.5% in the Al86Ni6Y5.5Co2Pd0.5 alloy but the hardness decreases in this case. The plasticity, hardness and elastic properties of these alloys depend on the amount and intrinsic properties of the different constituent phases, as well as on the resulting microstructure obtained after the casting process (i.e., the size and shape of the precipitates).

本文言語English
ページ(範囲)2377-2384
ページ数8
ジャーナルIntermetallics
18
12
DOI
出版ステータスPublished - 2010 12

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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