THE APPLICATION OF HIGH PRESSURE IN METAL-DEFORMATION PROCESSING Report on an Informal Symposium of the Metalworking Processes and Equipment Program

摘要

On October 3, 1963, a symposium was sponsored by the Bureau of Naval Weapons, Metalworking Processes and Equipment Program, on the application of high pressure in metal-deformation processing. Informal talks were given by eight investigators actively working in the field, covering both fundamental and applied aspects of high pres-sure effects.nPast research, largely by Bridgman, has shown that superimposed hydrostatic pressure can significantly increase the ductility at fracture of various materials. These observations have stimulated considerable interest in applying this hydrostatic-pressure effect to metal deformation processing, where it was anticipated that improved ductility and fabric ability of brittle materials could be realized. Hydrostatic extrusion and hydrodynamic compressive forging were two such fabrication techniques discussed at the symposium, and preliminary results were found to be encouraging. Another fabrication process that will be investigated in the near future is sheet drawing, where the effect of superimposed pressure on draw ability will be evaluated.