Powder Metallurgy Production of Structural Shapes.
Final rept. Sep 68-May 73,
DREXEL UNIV PHILADELPHIA PA
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This program has involved an integrated and concurrent study of closely-related topics representing major critical steps andor problem areas in powder metallurgy processing. The areas of major concern have been quench atomization powder compaction powder homogenization deformation processing and in particular preform forging structure-property correlations a systems analysis of powder processing. Analytic and experimental studies of quench atomization included water and gas atomization. In powder compaction, a combination in-situ of isostatic and axial loading was utilized for compaction of metal and ceramic powders. A fundamental analysis of homogenization, including a deformation step, was developed and applied successfully to powder blends. In powder forging, particular emphasis was placed on the interplay of mechanics and metallurgy in the design of the preform and in the overall process design. Structure-property correlations included the characterization of microstructure and pore morphology and associated mechanical properties, including impact behavior. A detailed economic risk analysis was performed on a PM steel plant. Author
- Properties of Metals and Alloys
- Structural Engineering and Building Technology