(北京航空制造工程研究所，北京 100024)
摘 要: 采用定性的金相法和定量的除氢法两种手段研究置氢温度和保温时间对TA15钛合金中氢分布的影响规律，并应用ANSYS瞬态热分析模块对置氢过程的氢分布规律进行模拟。结果表明：钛合金置氢过程是一个扩散过程，开始阶段合金中氢含量沿截面呈梯度分布，边缘氢含量明显高于心部，内部组织存在明显差异，具有明显的组织分界线；随着保温时间增加和置氢温度升高，分界线向心部移动，组织趋于一致，组织分界线逐渐消失，氢分布达到均匀。模拟结果表明，研究结果与实验结果吻合，说明采用瞬态热分析模块模拟氢在钛合金中的扩散问题是可行合理的，关键在于确定模拟过程各个参数的对应关系。
关键字: 钛合金；置氢；氢分布
treatment process for titanium alloy
（Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China）
Abstract:The effects of hydrogenated temperature and holding time on hydrogen distribution were studied by use of metallography and dehydrogenated method. The hydrogen distribution for hydrogenated process was simulated by means of instantaneous module for heat analysis in ANSYS software. The results show that the hydrogenated process on titanium alloy is a diffusion process, the hydrogen content along the section possesses a gradient distribution in the starting stage, the hydrogen content in edge is higher than that in center, and the microstructures in edge and center have remarkable difference. With the temperature and holding time increasing, the microstructures in edge and center are getting consistent, and the hydrogen distribution is getting uniformity. Meanwhile, the simulation results show that the simulation conclusion is consistent with the experiment results; it is reasonable that the application of instantaneous module for heat analysis in ANSYS is used to simulate hydrogen the diffusion, and the key is to determine the corresponding relationships among every parameters.
Key words: titanium alloy; hydrogen treatment; hydrogen distribution
