大规格TC4钛合金丝材直径对固溶时效显微组织和力学性能的影响

Effects of diameter on microstructure and mechanical properties of large-size TC4 titanium alloy wires in solution treated and aged condition

对2种直径的大规格TC4钛合金丝材进行相同制度的固溶时效热处理,并对热处理后的试样进行显微组织和力学性能的对比研究。对显微组织变化细节进行观察分析,并对提高大规格TC4钛合金丝材力学性能的工艺措施进行探讨。结果表明:直径对大规格TC4钛合金丝材的显微组织有明显的影响,进而对室温力学性能产生影响。

The effects of cold and hot upset on the microstructures and properties of TCI6 titanium alloy were studied. Means of SEM, TEM and micro-hardness tester were used to analyze the microstructures and hardness of cold and hot upset samples as well as the deformed samples after solution plus aging heat treatment. The results show that although there are some differences between the cold and hot upset samples, their microstructures and properties are nearly the same after solution plus aging heat treatment.