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pulvermetallurgisk procedure for the manufacture of a green presseemne with great strength and low relative density of a varmefast aluminium alloy
pulvermetallurgisk procedure for the manufacture of a green presseemne with great strength and low relative density of a varmefast aluminium alloy
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机译:粉末冶金工艺,用于制造具有高强度和相对密度低的varmefast铝合金生坯
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摘要
A green pressed article of high strength and of low relative density, formed from a heat-resistant aluminum alloy of the Al/Fe/X or Al/Cr/X type, where X is Ti, Ce, Zr, Hf, V, Nb, Cr, Mo or W, is produced by a powder-metallurgical process, wherein an alloy melt is atomized to form fine particles by means of an inert gas jet, with which 0.5 to 2% by volume of oxygen is admixed, and the powder produced in this manner is compactd. Nitrogen, argon or helium can be employed as inert gas. The green pressed article is preferably formed from a small proportion of coarser, non-spherical particles and a greater proportion of finer, spherical particles.
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