【摘要】 研究了Ｔｉ３１合金循环变形的力学行为及组织特征。研究表明：当循环应变Δε／２＝０．６％～１．０％时，合金具有明显的应变滞后现象，循环次数对硬化环的宽度无明显影响，循环变形特性主要表现为循环饱和。循环变形后α相内产生大量位错增殖，形成位错环。更多还原

【Abstract】 Cyclic deformation characteristic and microstructure of Ti-31 alloy has been studied. It is found that strain hysteresis is obvious as cyclic strain Δε/2=06%～10%. The cycle index has no marked influence on the width of cyclic hysteresis loop. Cyclic deformation characterises cyclic saturation. Cyclic deformation makes a lot of dislocations reproduce and become dislocation loops in α phase.更多还原