Process Improvement of Columbium (Cb-752) Alloy
Abstract
Approximately 800 pounds of Cb-752 alloy (columbium-10 percent tungsten-2.5 percent zirconium) 1/4-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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1964
- Accession Number
- AD0600403
Entities
People
- J. G. Bewley
- M. Schussler