Low cycle fatigue property of TA5 titanium alloy welded joint

The low cycle fatigue property of TA5 Titanium alloy welded joint with different reinforcement was investigated.The result shows that the increasing of weld reinforcement decreases the low cycle fatigue life of welded joint when the TA5 titanium alloy welded joint is working in the strain value is less than 0.35%.When the strain value is higher than 0.35%,the rule is not obvious.In high stress-strain condition,the low cycle fatigue life of TA5 Titanium alloy welded joint is under the circulatory hardening,and in low stress-strain condition,its circulatory hardening property is not obvious.The expression of the circulatory stress strain of welded joint and the low cycle fatigue life of its smooth sampling were shown.