Fatigue modification of TA15 titanium alloy weldments by an ultrasonic impact treatment

Yukui Gao, Zheng Zhong, Xiaodan Zhang, Yuhui Wang

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Abstract

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.
Original languageEnglish
JournalProceedings of the Risø International Symposium on Materials Science
Volume35
Pages (from-to)275-282
ISSN0907-0079
Publication statusPublished - 2014
Event35th Risø International Symposium on Materials Science : New Frontiers of Nanometals - DTU, Risø Campus, Roskilde, Denmark
Duration: 1 Sep 20145 Sep 2014
Conference number: 35

Conference

Conference35th Risø International Symposium on Materials Science : New Frontiers of Nanometals
Number35
LocationDTU, Risø Campus
CountryDenmark
CityRoskilde
Period01/09/201405/09/2014

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