热等静压工艺参数对ZTC4钛合金力学性能的影响

摘要

为了使ZTC4钛合金铸件具有较优的力学性能,系统地研究了热等静压温度、时间、压力等工艺参数对ZTC4钛合金铸板力学性能的影响.结果表明:热等静压工艺参数变化对ZTC4钛合金室温拉伸性能、弯曲性能都有影响,其中对ZTC4钛合金伸长率的影响最为明显,但对冲击性能影响不显著.综合考虑各因素,在920℃/125MPa/2h热等静压工艺条件下可使ZTC4钛合金铸件获得较好的综合力学性能.%In order to obtain the best mechanical properties of ZTC4 alloy casting, effects of hot iso-static pressing treatment parameters (temperature, time and pressure) on microstructure of ZTC4 casting titanium alloy were investigated systemically. The results show that the room temperature tension and bend properties are obviously affected by the hot isostatic pressing treatment parameters, especially the elongation of ZTC4 alloy, but the impact property is affected slightly. The casting show the best mechanical properties when they are HIP at 920℃ for 2h with the pressure of 125MPa,by consideration of all the conditions.