The welded components of TA15 titanium alloy were ultrasonically impact treated. The fatigue lives were investigated under the same test conditions. The fatigue strength was determined by stair-step method and the residual stresses were analyzed by an X-ray diffraction stress tester. The results show that the fatigue properties of TA15 titanium alloy welded components are sensitive to the surface treatment and ultrasonic impacting can prolong the fatigue lives. The effect of fatigue strength improvement mainly depends on compressive residual stresses and grain refinement.
|Journal||Proceedings of the Risø International Symposium on Materials Science|
|Publication status||Published - 2014|
|Event||35th Risø International Symposium on Materials Science : New Frontiers of Nanometals - DTU, Risø Campus, Roskilde, Denmark|
Duration: 1 Sep 2014 → 5 Sep 2014
Conference number: 35
|Conference||35th Risø International Symposium on Materials Science : New Frontiers of Nanometals|
|Location||DTU, Risø Campus|
|Period||01/09/2014 → 05/09/2014|
Gao, Y., Zhong, Z., Zhang, X., & Wang, Y. (2014). Fatigue modification of TA15 titanium alloy weldments by an ultrasonic impact treatment. Proceedings of the Risø International Symposium on Materials Science, 35, 275-282.