Oxidation behavior of binary Ti-xW (0 <= x <= 30, wt%) alloys at 650 degrees C as a function of W concentration

摘要

The role of composition on the oxidation behavior of the Ti-W system at 650 degrees C was investigated utilizing a compositionally graded specimen, Ti-xW (0 <= x <= 30, all compositions in wt%). Microstructural evolution of the base material and thickness of the oxide layers were assessed as a function of composition. Some of the observations with regard to the evolved base metal microstructure, including: a lath and beta rib/precipitates and lamellar structure, were found to be comparable to what is reported for Ti-Mo system. It was also shown that formation of a thinner oxide does not necessarily imply on the lower oxygen ingress. (C) 2016 Elsevier Ltd. All rights reserved.