COLUMBIUM POWDER METALLURGY PROJECT QUARTERLY PROGRESS REPORT NO. 1, PERIOD COVERED MAY 1 TO JULY 31, 1960
Preliminary studies of hot pressing parameters were completed and a balanced design begun, initial isostatic pressing and sintering studies were started and plans completed for plasma arc billet consolidation. Results indicate that in hot pressing F-48 prealloy powders: hydrided powder gives cleaner, more easily worked compacts than dehydrided powder; precompression of the powders is not necessary but convenient; a temperature sequence of high-low prior to pressing is undesirable because the powders bridge at the higher temperature; 100% density can be readily achieved at moderate temperatures and pressures; and the ability of small powder compacts to be rolled far surpasses its arc-cast counterpart. Preliminary tests of the homogenization and densification of cold presses and sintered F-48 made from elemental powders were encouraging. (N.W.R.)
- Research Organization:
- General Electric Co. Flight Propulsion Lab. Dept., Cincinnati
- NSA Number:
- NSA-15-029663
- OSTI ID:
- 4840530
- Report Number(s):
- NP-10660
- Country of Publication:
- United States
- Language:
- English
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