▎ 摘　　要

The beta-transus temperatures (T-beta) of graphene oxide (GO) reinforced high-temperature titanium alloy matrix composites were studied by metallography method. With the increase of GO content, T-beta increases linearly when the content of GO is 0-0.17 wt%, and then stays flat when the content is 0.17-0.23 wt%. The T-beta of the composite with only 0.17 wt% GO is up to 1132.5 +/- 2.5 degrees C, which is 80 degrees C higher than the matrix alloy without GO. After heat treatment, most GO flakes were located at the interface between primary alpha phase and transformed beta phase. The main reason for T-beta increase is that GO hindered atomic diffusion and alpha/beta interface migration. (C) 2021 Elsevier B.V. All rights reserved.