Effects of Iron Additions on the Mechanical Properties of a Uranium-0.74 Weight Percent Titanium Alloy

摘要

The effects of iron additions to a uranium-0.74 weight percent titanium (U-0.74Ti) alloy on mechanical properties were studied over the range of 20 to 350 ppM iron. High strain rate (1 s exp -1 ) tensile tests and instrumented unnotched Charpy tests were made on alloys that had been vacuum induction cast, hot rolled to plate, vacuum water quenched from 800 exp 0 C, and aged at 350 exp 0 C for 16 hours. Tensile yield and ultimate strengths and impact yield strengths increased with increasing iron content. Impact energy absorbed in a Charpy test decreased dramatically at only 60 ppM iron. Tensile elongation decreased from 20 percent at low iron levels to about 6 percent at 150 ppM iron. (ERA citation 06:023916)