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U.S. Department of Energy
Office of Scientific and Technical Information

Thermomechanical processing beta titanium. Final report, 11 May 1972--10 August 1973

Technical Report ·
OSTI ID:4344250
The response of the beta alloy TS6 (Ti: 10 Cr, 7 V, 3.5 Mo, 3 Al), to a wide variety of thermomechanical treatments was investigated, including effects of cold work on polygonized structures, coldreduction temperature, and multi- stage aging. Combinations of strength and ductility can be manipulated within a wide range by varying the amount of cold work and the aging treatment. Mechanical propenties are strongly dependent upon the mode of deformation during cold working and slight variations in alloy chemistry. Stress corrosion tests indicate superior performance of TS6 compared with similarly treated beta-120VCA. Scale-up of ingot melting and processing techniques was accomplished. Ingots of TS6 weighing twenty-eight pounds were prepared using a master-alloy technique. Hot extrusion at 1800 deg F yielded twoinch diameter rod which has been successfully cold press-swaged 20% and cold rolled 90%. Compared with previous one-pound heats of TS6, this material overages earlier, at somewhat lower hardness levels, and with more rapid kinetics. (GRA)
Research Organization:
Brown Univ., Providence, R.I. (USA)
NSA Number:
NSA-29-027274
OSTI ID:
4344250
Report Number(s):
AD--769937; AMMRC-CTR--73-30
Country of Publication:
United States
Language:
English