Oxidizability of IVT1 Titanium Beta-Alloy and Its Protection from Gas Corrosion,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The article discusses kinetics of oxidizing the beta-alloy of ITV1 titanium, containing 7 Mo, 5.5 Cr, 3 Fe, and 3 Al. The ITV1 alloy belongs to the metastable beta-alloys of titanium, which combine high technological plasticity in the quenched state with high strength and satisfactory plasticity after aging. Low-temperature beta to alpha beta transformation occurring in the alloy does not effect the oxidation kinetics of IVT1 alloy. The change in the rate constants of the parabolic oxidation law at 740C can be explained by the alpha beta to beta phase transformation. Surface alloying with aluminum effectively decreases the oxidation rate of the alloy at high temperatures for example, at 1000C the oxidation rate of the samples coated with aluminum is cut by a factor of 12.
- Metallurgy and Metallography