Investigation on the Effect of Electron Beam Weld Shape on Fatigue Performance of Thickness Titanium Alloy |
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| Authors: | Liu Xin Gong Shuili Lei Yongping |
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| Affiliation: | 1School of Material Science and Engineering,Beijing University of Technology,Beijing 100021,China2Science and Technology on Power Beam Processes Laboratory,Beijing Aeronautical Manufacturing Technology Research Institute,Beijing 100024,China |
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| Abstract: | Different weld shapes of 45mm thickness TA15 titanium alloy were obtained by choosing appropriate electron beam welding parameters,and the influence of weld shape on fatigue performance of the joints was investigated by analytic hierarchy process.The results show that four typical weld shapes were formed,according to their geometry characters,which are respectively named as bell shape,funnel shape,nail shape,and wedge shape.Weld shape effect the fatigue life and dispersion of the experiment data of the joint.The sequencing of fatigue performance of the joints with four different shapes by analytic hierarchy mathematical model is bell shape,funnel shape,wedge shape,and nail shape.It is validated by trial results that the analytic hierarchy mathematical model is effective and practical. |
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| Keywords: | weld shape fatigue performance analytic hierarchy process electron beam welding thickness titanium alloy |
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