TA15 钛合金等温局部加载各加载区的组织和性能

研究了不同加载方式下TA15钛合金方坯先加载区、过渡区和后加载区的组织和力学性能。结果表明:只采用局部加载时,先加载区和后加载区的室温和高温性能优于过渡区的性能,各区的持久性能差别不大;采用先局部后整体的加载方式时,过渡区的室温和高温性能优于其他两个加载区,但过渡区的持久性能明显较差。只采用局部加载时,各区的组织性能优于先局部后整体加载时各区的组织性能。

Tensile Properties and Microstructure of TA15 Titanium AlloyParts With Local Loading

Tensile properties and microstructure of the first loading region, last region and transition region of TA15alloy parts with different local loading were studied by experiment. The result shows that the room and high temperature tensile properties of the first loading region and the last loading region are better than those of transition region, but the high temperature stress rupture is no different when the local loading is applied. When a refined forming is added by whole loading after local loading process, the room and high temperature tensile properties of the transition region are better than
those of the first and the last loading region, but the high temperature stress rupture of the transition region is bad. When the local loading is applied only, the tensile properties and microstructure are better in comparison with those with local loading first and than with whole loading at last.