J Mater Sci Technol ›› 1993, Vol. 9 ›› Issue (4): 307-309.

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A New Dispersion-strengthening Phase in an Aged RST Al-8Fe-2Mo-2Zr-2Nd-0.7Ti-1.6Si Alloy

Shenglong DAI Guifu YU Minggao YAN Institute of Aeronautical Materials,Beijing,100095,China   

  • Received:1993-07-28 Revised:1993-07-28 Online:1993-07-28 Published:2009-10-10

Abstract: An effective dispersion-strengthening phase in Al-8Fe-2Mo-2Zr-2Nd-0.7Ti-1.6Si alloy was identified to be an aged precipitate phase with possible chemical stoichiometry of Al_(20)(Ti,Mo)_2 Nd and fcc crystal structure with a_o=1.455 nm.The structure was determined to be Fm3m space group.

Key words: high temperature Al alloy, dispersion-strengthening, phase structure