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固溶时效是金属材料常见的热处理方式,经过该工艺处理后,金属材料可以获得较高的强度及理想的塑性。本次实验通过调整TB9钛合金的时效温度和时间,来观察和检测该合金的显微组织和力学性能的变化。结果表明:试样在480℃保温12 h,抗拉强度和屈服强度分别达到1,376 MPa和1,245 MPa。通过观察各状态下的显微组织,发现在560℃保温12 h后β晶粒内的细晶粒α片状晶均匀分布且呈一定取向关系交叉组合,该状态下的延伸率和断面收缩率分别达到19.3%和39.99%。经分析,合金性能优异,其中最主要的强化方式是弥散强化。
Solution aging is a common heat treatment of metal materials, after the process, the metal material can obtain higher strength and ideal plasticity. The experiment by adjusting the aging temperature and time TB9 titanium alloy to observe and test the microstructure and mechanical properties of the alloy. The results show that the tensile strength and yield strength reach 1,376 MPa and 1,245 MPa respectively when the sample is incubated at 480 ℃ for 12 h. By observing the microstructure in each state, it was found that the fine-grained α lamellae within the β grains were uniformly distributed and aligned in a certain orientation after being incubated at 560 ℃ for 12 h. The elongation and reduction of area in this state Reaching 19.3% and 39.99% respectively. After analysis, the alloy performance is excellent, the most important strengthening way is dispersion strengthening.