DEVELOPMENT OF TITANIUM-BASE ALLOYS
Summary rept. 19 May 1951-18 May 1952
BATTELLE MEMORIAL INST COLUMBUS OH
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The experimental work consisted of melting and testing of exploratory alloys. Past work indicated that the addition of the beta stabilizing elements such chromium, iron, manganese, molybdenum, and vanadium, offered the best possibility in the development of titanium alloys. This observation was verified when ternary and complex alloys containing these elements were tested and found to possess desirable properties. A number of exploratory alloys were heat treated and tested to determine the general effects of different thermal cycles on tensile properties. The effects of quenching media and low temperature aging were also investigated. As a result of the studies on the binary type alloys such as Ti-Cr and Ti-Mn containing from 5 to 8 of the alloying element, the hypothesis was proposed that the beta phase is susceptible to a hardening phenomenon involving a submicroscopic precipitation of the alpha phase. Recrystallization, isothermal transformation studies, and welding experiments were conducted using binary Ti-Cr alloys. Dutile welds in the as-welded condition were obtained in these high strength alloys.
- Metallurgy and Metallography