The alloy Ti 45Al 10Nb(at%) has a fully lamellar microstructure. The test results show that the brittle ductile transition(BDT) temperature increases with the increases of strain rate and temperature.

• 结果表明 :随着应变速率升高 ,合金的屈服强度升高而延伸率下降 ,由此得到韧脆转变温度 TBDT随应变速率升高而升高的关系 ,并计算出 Ti45 Al10 Nb合金韧脆转变的激活能为 330 k J/ mol。