Abstract
Abstract A preliminary study of the scaling characteristics in air of laboratory-produced titanium and titanium-base alloys, and commercially-produced titanium and titanium-base alloys was conducted at temperatures of 1200, 1400, 1600, and 1800 F (650, 760, 870, and 980 C) in the time range of approximately 4 to 300 hours. A total of 43 titanium-base alloys, one commercial grade of titanium (RS-70), and AISI Type 302 stainless steel were scaled at each of these temperatures; two additional alloys were employed at temperatures of 1200 and 1600 F. Scales formed on a 4.02 percent Al-Ti alloy were studied in detail and a scaling mechanism was suggested; scales formed on a 4.03 percent Cr-Ti alloy and a 2.95 percent W-Ti alloy were studied in less detail. Scaling tendencies of titanium-base alloys, relative to titanium and stainless steel were evaluated on the basis of weight gain with time. Isothermal transitions in scaling rate were observed for titanium and titanium-base alloys within the temperature range ...
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