Method of producing large objects from rapidly quenched...

Details Method of producing large objects from rapidly quenched... Method of producing large objects from rapidly quenched...

B - Operations, Transporting

22

F

18/1117

B22F 3/10 (2006.01) B22F 3/00 (2006.01) C22C 45/00 (2006.01)

Patent

CA 1152715

Abstract A method of producing large objects from rapidly quenched non- equilibrium powders in which the powder is first slowly precompacted to a predetermined density without causing any substantial temperature rise. The powder is then rapidly compacted by a shock wave having a short rise time. In this way thin surface regions on the particles are rapidly brought to melting to cause interwelding of the particles. These thin surface regions are then rapidly quenched by conduction of heat to the interior of the particles. Because of the very rapid heat- ing and quenching, in the order of a few microseconds, degradation of the material is avoided.

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