研究Ti-xNb-0.7Ta-2Zr-1.4O(x=22.4,22.85,24.5)钛合金的室温压缩流变行为。结果表明:合金的真应力—真应变曲线上塑性变形阶段均表现出应力振动现象,即应变硬化和应变软化交替出现,应力振动是由压缩过程中占主导地位的变形机制发生变化所引起的。随着合金中Nb含量的升高,塑性变形初始阶段的应力平台阶段消失,应变软化阶段缩短,应力软化值减小。这种现象是由于Nb含量的变化改变了合金的塑性变形机制所致。 The rheological behavior of Ti-xNb-0.7Ta-2Zr-1.4O (x = 22.4,22.85,24.5) titanium alloy at room temperature was studied. The results show that the stress-strain phenomena show that the strain hardening and strain softening alternately occur, and the stress vibration is caused by the change of the deformation mechanism which is dominant in the compression process. With the increase of Nb content in the alloy, the initial stage of plastic deformation disappears, the stage of strain softening shortens and the stress softening value decreases. This phenomenon is due to the change of Nb content changes the plastic deformation mechanism of the alloy.