TITANIUM SHEET ROLLING PROGRAM FOR TI-8A1-1MO-1V, TI-5A1-5SN-5ZR, AND TI-7A1-12ZR
Abstract
Twelve Ti-8Al-1Mo-1V sheets were duplex annealed at 1850F (5 min) AC + 1100F (8 hrs) and tested; the results were nearly the same as achieved in laboratory treated samples. The study of the effect of H on 1000F creep- stability and room temperature notch properties of Ti-8Al-1Mo-1V showed that 150 ppm H content is a safe level in both mill annealed material. Uniform properties were found to exist through a representative sheet of Ti-8Al-1Mo-1V and a stress relieving investigation showed that temperatures of 11001300F are required to relieve residual stresses in short practical times. Laboratory studies on Ti-5Al-5Sn-5Zr and Ti-7Al-12Zr sheets showed that 0.010-0.012in should be removed from gage after finish rolling to remove processing contamination, particularly in Ti-7Al-12Zr; that 150 ppm H is a safe level for Ti-5Al-5Sn-5Zr; and 100 ppm appears to be tolerable in Ti-7Al-12Zr; and that slow cooling after final annealing adversely affects the creep resistance and ductility, especially the latter in Ti-7Al-12Zr.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 14, 1961
- Accession Number
- AD0267448
Entities
People
- D. L. Day
- D. R. Mitchell
- H. D. Kessler