LINER FOR EXTRUSION BILLET CONTAINERS. Interim Technical Documentary Progress Report, May 4-August 4, 1963
Rokide-process alumina and zirconia coatings and a Udimet 700 superalloy liner were evaluated by extrusion of 31/2-in. billets of Inconel 713C, Udimet 700, SAE 4340, PH15--7Mo, and TZM alloys, using rod extrusion dies of temperatures were in the 1900 to 2250 deg F and 2900 to 3600 deg F ranges. Both alumina and zirconia coatings provided adequate protection to the support tooling at temperatures to 3450 deg F. Alumina coatings showed wear at temperatures over 2900 deg F, but may be serviceable to 3450 deg F. Zirconia coatings showed erratic results. One coating did withstand extrusion at 3450 deg F without apparent wear. The Udimet 700 liner did not show wear at 2000 deg F, but did react with the TZM billet at 3600 deg F. T-section die design was modified to prevent die cracking during extrusion and reduce coating grinding costs. (auth)
- Research Organization:
- Illinois Inst. of Tech., Chicago. IIT Research Inst. Page(s): 18
- NSA Number:
- NSA-18-018329
- OSTI ID:
- 4034087
- Report Number(s):
- ASD-TDR-7-945(IV); AD-416642
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALUMINUM ALLOYS
ALUMINUM OXIDES
CHROMIUM ALLOYS
COATING
COBALT ALLOYS
CORROSION PROTECTION
CRACKS
DIES
EXTRUSION
HIGH TEMPERATURE
INCONEL ALLOYS
MACHINING
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NIOBIUM ALLOYS
RODS
TITANIUM ALLOYS
TUBES
UDIMET
WEAR
ZIRCONIUM OXIDES