亚稳β型TB8钛合金置氢特性研究

Research on hydrogenation property of TB8 metastable β titanium alloy

文章采用高温气相充氢法对TB8钛合金进行常压置氢实验,以研究亚稳β型TB8钛合金的置氢特性,即氢气流速、置氢温度和置氢时间对置氢量的影响规律,并建立了相应的数学模型。结果表明,氢气流速越快,合金中氢的质量分数越高,最终达到饱和;置氢量随置氢温度的变化规律为先增加后降低,当达到峰值后遵从Sievert’s定律;随置氢时间的延长,置氢量逐渐增加,并最终趋于平衡。

Hydrogenation experiments were carried out to investigate the property of TB8 titanium al- loy by using the method of high-temperature gas phase hydrogenation, especially the variation of hydrogen content when the hydrogen flow rate, temperature and time have been changed. The corresponding mathematical models were established based on the experimental data. It is indicated that the hydrogen content in the alloy increases with the increase of hydrogen flow rate and eventually reaches to the saturation. The hydrogen content first increases then reduces with the changing temperature, and obeys the Sievert＇s law at the peak. The longer time of hydrogenation, the higher the hydrogen content in the alloy, then reaches to a balance at last.