EVALUATION OF THE PRODUCIBILITY OF TWO NEW TITANIUM BASE SHEET ALLOYS, Ti- 7Al-12Zr AND Ti-5Al-5Zr-5Sn. Fourth Bi-Monthly Report, Period Covered September 1, 1960-October 31, 1960

Technical Report · Tue Nov 01 04:00:00 EST 1960

OSTI ID:4033603

Vretas, T

The final processing of the three 0.050-in. x 24-in. x 60-in. titanium alloy sheets which were produced previously using three different finish hot rolling temperatures was completed. Each of these sheets, being in the mill annealed condition, was evaluated with respect to tensile and bend properties. Surface contamination data as indicated by microhardness tests were obtained for the "as hot rolled" and "finished" sheet product made. The data were rather erratic in nature and indicated that surface contamination was evident in both sheet conditions to a depth of about 0.002 in./O.OO3 in. Using material from the finished sheet product, a total of 0.004 in. was pickled off the gage to note the effect of additional surface removal on the bend properties. A series of specimens were annealed from 1450 to 1700 deg F at 50 deg F intervals to evaluate by means of microstructure examination the recrystallization temperature for the Ti--7A1--12Zr alloy type. The times at temperature varied from one to eight hours. Melting of the first 200 pound double vacuum melted ingot of the Ti --5A1- -5Zr --5Sn alloy type was accomplished and is presently being scheduled for forging to slab product. The production of hot rolled sheet product from the other Ti--7A1--12Zr forged slab, Heat XT-70018, was scheduled. Depending upon the amount of material available, hot rolling of the four gage sizes 0.080, 0.060, 0.040, and 0.020 in. is being considered. Chemical analyses results are reported for the second Ti --7A1 --l2Zr ingot. Heat XT-70018. (auth)

• Research Organization: Republic Steel Corp. Titanium Research Lab., Canton, Ohio
• NSA Number: NSA-15-023925
• OSTI ID: 4033603
• Report Number(s): AD-249674
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM ALLOYS
ANNEALING
ERRORS
FORGING
GAGES
HARDNESS
HIGH TEMPERATURE
HOT WORKING
MATERIALS TESTING
MELTING
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
OXIDES
PICKLING
QUALITATIVE ANALYSIS
RECRYSTALLIZATION
RODS
ROLLING
SHEETS
SURFACES
TEMPERATURE
TENSILE PROPERTIES
THICKNESS
TIN ALLOYS
TITANIUM ALLOYS
VACUUM
WEIGHT
ZIRCONIUM ALLOYS