Accession Number:

AD0600403

Title:

Process Improvement of Columbium (Cb-752) Alloy

Descriptive Note:

[Technical Report, Interim Report]

Corporate Author:

UNION CARBIDE CORP KOKOMO IN

Personal Author(s):

Report Date:

1964-03-31

Pagination or Media Count:

90

Abstract:

Approximately 800 pounds of Cb-752 alloy columbium-10 percent tungsten-2.5 percent zirconium 14-inch thick sheet bar were processed to 0.060-inch thickness, 30-inches width sheets. About 200 pounds of sheet in 0.060-, 0.030-, 0.018-, and 0.012-inch gages were produced from this material and furnished in the recrystallized condition. One large sheet was utilized to study the effects on alloy properties of a duplex annealing process. A total of 48 different processing cycles was investigated. A solution treatment at 2800 deg F, followed by 40 percent reduction by cold rolling, with a final anneal at 2400 deg F appears to produce the best combination of strength and ductility properties in Cb-752 alloy. This route will be used in the mill fabrication of the remainder of the 0.060-inch thick material to the final sheet gages of 0.030-, 0.018-, 0.012-, and 0.008-inch.

Descriptors:

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

[A, Approved For Public Release]