Beta alloys with improved properties

Details Beta alloys with improved properties Beta alloys with improved properties

C - Chemistry, Metallurgy

22

C

75/17, 148/35

C22C 9/01 (2006.01) C22C 9/04 (2006.01) C22F 1/06 (2006.01) C22F 1/08 (2006.01)

Patent

CA 1202201

Reta alloys with improved properties Abstract : An aluminium bearing beta copper alloy that on heating to a first temperature shows a transition from an (alpha + beta)-region, an (alpha + beta + gamma)-region or a (beta + gamma)-region to a beta-region. Its average grain size is less than 200µm and it contains aluminium bearing precipitates, e.g. Co-Al-precipitates, the average size of which is less than 10µm and which are insoluble in the alloy below a second temperature that is higher than said first temperature. The fine grain structure guarantees an ex cellent mechanical and thermomechanical behaviour of the alloy, while the aluminium bearing precipitates guarantee that this structure and hence the advantageous behaviour of the alloy is maintained as long as the alloy is not heated to said second temperature.

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