TITANIUM SHEET ROLLING PROGRAM FOR Ti-8Al-1Mo-1V, Ti-5Al-5Sn-5Zr, AND Ti- 7Al-12Zr. Twelfth Bimonthly Report, May 1-June 30, 1961

Technical Report · Thu Sep 14 04:00:00 EDT 1961

OSTI ID:4830204

Day, D L; Mitchell, D R; Kessler, H D

Twelve Ti--8Al--lMo--lV sheets were duplex annealed at 1850 deg F (5 min) AC + 1100 deg F (8 hrs) and tested; the results were nearly the same as achieved in laboratory treated samples. The study of the effect of H on 1000 deg F 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 matertal. Uniform properties were found to exist through a representative sheet of Ti--8A1--1Mo--1V and a stress relieving investigation showed that temperatures of 1100 to 1300 deg F are required to relieve residual stresses in short practical times. Laboratory studies on Ti--5A1--5Sn--5Zr and Ti--7Al-12Zr sheets showed that 0.010 to 0.012 in. should be removed from gage after finish rolling to remove processing contamination, particularly in Ti--7A1--12Zr; that 150 ppm H is a safe level for Ti--5A1--5Sn--5Zr; and 100 ppm appears to be tolerable in Ti--7A1--12Zr; and that slow cooling after final annealing adversely afiects the creep resistance and ductility, especially the latter in Ti--7A1-12Zr. (auth)

• Research Organization: Titanium Metals Corp. of America. Technical Lab., Toronto, Ohio
• NSA Number: NSA-16-019294
• OSTI ID: 4830204
• Report Number(s): AD-267448
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM ALLOYS
ANNEALING
CLEANING
COOLING
CREEP
DUCTILITY
HYDROGEN
MECHANICAL PROPERTIES
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
ROLLING
SHEETS
STRESSES
TESTING
TIN ALLOYS
TITANIUM ALLOYS
TRACE AMOUNTS
VANADIUM ALLOYS
ZIRCONIUM ALLOYS