SMALL, THIN-WALLED COLUMBIUM ALLOY TUBING PROGRAM.

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Abstract:

An improved manufacturing process was developed for the production of small diameter, thin wall tubing of the columbium alloy D-43 Cb-10W-1Zr-0.1C. Two goal sizes of tubing --0.250 in. I.D. x 0.030 in. wall and 0.125 in. I.D. x 0.015 in. wall -- were made in lengths of up to 15 feet. The finished tubing from the best process routes and schedules showed inspection acceptance rates of over 95 when inspected ultrasonically, dimensionally, and visually by commercial standards for high quality tubing. The process yields during tubing processing were comparable with those obtained with commercial tubing materials. The high temperature mechanical properties of the finished tubing were comparable to D-43 sheet material.

Author(s):
Peterson, E. V.
Author Organization(s):
DU PONT DE NEMOURS (E I) AND CO WILMINGTON DE PIGMENTS DEPT
Descriptive Note:
Final rept. 15 Oct 64-30 Jul 66,
Pagination:
0232

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFML-TR-66-306
Contract/Grant Number(s):
AF 33(615)-2097
Project Number(s):
MMP-8-241
Monitor Series:
TR-66-306
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*PIPES), (*NIOBIUM ALLOYS, (*MATERIAL FORMING, NIOBIUM ALLOYS), ARC MELTING, EXTRUSION, GRINDING, TEMPERATURE, DRAWING(FORMING), THICKNESS, DEFORMATION, VISUAL INSPECTION, HARDNESS, METALLOGRAPHY, MICROSTRUCTURE, ANNEALING
Field(s)/Group(s):
Fabrication Metallurgy
Keyword(s):
NIOBIUM ALLOY D 43
Report Date:
1966 Sep 01