COLUMBIUM ' 'H' ' SECTION PROGRAM. PHASE I - EXTRUSION. PHASE II - DRAWING.

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Abstract:

The development of the extrusion process for D-43 Nb 10W-1Zr-0.1C and Cb-752 Nb-10W-2.5Zr H sections continued. Efforts were concentrated on reduction of contamination and improvement of surface finish and dimensional control of extruded sections. Group II H extrusions 0.125 to 0.060 in. section thickness showed reduced contamination and improved straightness, but surfaces and uniformity of section thickness were unsatisfactory. Group I extrusions were drawn from section thickness of 0.188 in. at room temperature with reductions of 5 to 18 per pass. Total reductions up to 28 were made on short lengths without intermediate annealing. Author

Author(s):
Peterson, E. V.
Author Organization(s):
DU PONT DE NEMOURS (E I) AND CO BALTIMORE MD DU PONT METALS CENTER
Descriptive Note:
Interim rept. no. 2, 1 Oct 63-1 Jan 64,
Annotation:
Development of processes and techniques for extruding (0.060 in. thick) and drawing (0.040 in. thick) H sections at D-43 and Cb-752 niobium alloys.
Pagination:
0026

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
AF33 657 11293
Project Number(s):
8 110
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
MATERIAL FORMING, ZIRCONIUM ALLOYS, CARBON ALLOYS, EXTRUSION, DRAWING(FORMING), LUBRICATION, GLASS, GRAPHITE, SURFACE PROPERTIES, THICKNESS, DIES
Keyword(s):
NIOBIUM ALLOY CB 752, NIOBIUM ALLOY D 43
Report Date:
1964 Jan 01