Research on High-temperature Creep Properties of TP-650 Titanium Matrix Composites

摘要

The paniculate reinforced titanium matrix composites are the main ways of increasing hightemperature performance of metal composite materials. The materials used in high temperature environment should have good elevated-temperature properties, especially creep performance. This article studies creep properties of the TiC particulate-reinforced TP-650 titanium matrix composites by observation of the microstructure evolution during the creep process, The results show that dispersively distributed precipitates from TP-650 in the creep process play a dislocation plug role which improves the creep resistance. The TiC particles have the stable strengthening effect. The creep mechanism of TP-650 agrees with the second phase particles reinforce creep within grains and at grain boundaries.