钛合金由于比强度高和耐蚀性好而在航空航天、石油化工等领域得到广泛的应用。但其表面不耐磨而限制了其更为广泛的应用。将经过激光处理和未经激光处理的TB5合金放置在一种特殊固体介质进行渗氧处理, 通过研究炉的加热条件和前处理过程, 分析其对TB5合金的显微组织和硬度的影响。此外, 在相同实验条件下与TA4合金进行了比较。实验结果表明, 经激光处理和未经激光处理的钛合金在相同温度和氧化时间下进行渗氧处理均获得了一层强化层, 且经激光处理后的试样在进行渗氧处理后渗氧层的厚度和表面硬度值明显要高于未经激光处理的试样。在相同实验条件下, TA4合金比TB5合金更容易渗氧。

Titanium alloy has high strength, low density, high corrosion resistance, which are being used in aerospace and chemical industries. But its low wear resistance restricts wider application. In the paper, the laser treated and untreated samples of TB5 alloys are placed in a special solid medium for oxygen diffusion. By studying the furnace heating conditions and the pretreatment process, an analysis is performed on the microstructure and hardness of TB5 alloys. What’s more, we make a comparison between TB5 and TA4 titanium alloys under the same experimental conditions. The experimental results indicated: Under the same temperature and time a hardened layer is formed on the surface of the laser treated and as-received samples. The thickness and hardness of the oxygen-diffusion zone formed on the laser treated sample are much higher than that of the as-received sample. Under the same experimental conditions, TA4 titanium samples are easier for oxygen diffusion, compared with TB5 titanium alloys.