Abstract: Disclosed is an improved aluminum base alloy comprising an improved aluminum base alloy comprising 0.2 to 2 wt. % Si, 0.3 to 1.7 wt. % Mg, 0 to 1.2 wt. % Cu, 0 to 1.1 wt. % Mn, 0.01 to 0.4 wt. % Cr, and at least one of the elements selected from the group consisting of 0.01 to 0.3 wt. % V, 0.001 to 0.1 wt. % Be and 0.01 to 0.1 wt. % Sr, the remainder comprising aluminum, incidental elements and impurities. Also disclosed are methods of casting and thermomechanical processing of the alloy.

Abstract: Worm gearing having improved wear and strength properties comprises a Cu, 8.0-13.0 w/o Sn, 3.5-5.0 w/o Ni alloy aged in the as-cast condition to strengthen the dendritic microstructural constituent (e.g., alpha phase) while retaining the as-cast, relatively hard interdendritic constituents. The overall Ni concentration of the alloy does not exceed about 5 w/o and the Ni concentration across individual as-cast dendrites is decreased at the dendrite edges (grain boundaries) to hinder formation of a discontinuous, embrittling grain boundary product that is deleterious to these properties.

Abstract: A process for producing a copper alloy composite containing dispersed graphite. The process comprises locating compacted uncoated graphite in a preheated die, pouring molten copper alloy over the compacted graphite and infiltrating the compacted graphite with the molten copper alloy.

Abstract: Process for the preparation of a substantially homogeneous alpha phase copper-nickel-tin alloy comprising copper and 4-18% by weight of nickel and 3-13% by weight of tin, comprising atomizing a molten alloy having the before-indicated composition and collecting atomized particles on a collecting surface in such a way that solid collected material is obtained having a temperature, of at least 700.degree. C., followed by quick cooling of the collected material to a temperature below 300.degree. C.The alloy thus obtained may be hardened, preferably after shaping, by spinodal decomposition.

Abstract: A method is disclosed for manufacturing a finished product which consists at least partially of a copper nickel and tin based alloy which has undergone spinodal decomposition. A liquid bath of the Cu Ni Sn based alloy is prepared containing also titanium and possibly lead. A semi-finished product is formed by spray-deposition of this alloy onto a backing then transformed with an annealing stage followed by rapid tempering. The product obtained after transformation of the semi-finished product is subjected to a heat annealing treatment in order to carry out spinodal decomposition of the part of the said product which is constituted by Cu Ni Sn based alloy, to obtain a finished product. A semi-finished product or product is obtained by this method. Connectors and machinable products based on Cu Ni Sn and of high and homogeneous hardness are manufactured.