| TC4钛合金薄板高能束焊接接头疲劳性能研究 |
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| 引用本文： | 李晓延,巩水利,陈俐.TC4钛合金薄板高能束焊接接头疲劳性能研究[J].航空材料学报,2005,25(4):26-29. |
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| 作者姓名： | 李晓延 巩水利 陈俐 |
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| 作者单位： | 1. 北京工业大学,材料学院,北京,100022
2. 北京航空制造工程研究所,北京,100024 |
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| 摘 要： | 对TC4钛合金薄板激光焊和电子束焊接头的疲劳性能进行了试验研究,测试了不同应力水平下的疲劳寿命。采用统计分析的方法研究了TC4钛合金薄板母材及其高能束流焊接接头的中值疲劳寿命。分析了焊接工艺条件对接头疲劳强度的影响。结果表明,在高应力水平时,TC4钛合金高能束流焊接接头的疲劳寿命低于母材的疲劳寿命,在低应力水平时,TC4钛合金高能束流焊接接头的疲劳寿命高于母材的疲劳寿命。
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| 关 键 词： | TC4钛合金 激光焊 电子束焊 疲劳 |
| 文章编号： | 1005-5053(2005)04-0026-04 |
| 修稿时间： | 2004年9月6日 |
A Study of Fatigue Life of TC4 Titanium Alloy Sheet and Its High Density Beams Welded Joints |
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| LI Xiao-yan,GONG Shui-li,CHEN Li.A Study of Fatigue Life of TC4 Titanium Alloy Sheet and Its High Density Beams Welded Joints[J].Journal of Aeronautical Materials,2005,25(4):26-29. |
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| Authors: | LI Xiao-yan GONG Shui-li CHEN Li |
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| Institution: | LI Xiao-yan1,GONG Shui-li2,CHEN Li2 |
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| Abstract: | Fatigue strength of TC4 titan ium alloy sheet and its laser beam and electron beam welded joints was investigated experim en- tally. The m ed ian fatigue life values of the welded joints, under various stress levels, were evaluated by statistic approach. The effect of weld ing cond ition on the fatigue life of the joints was analyzed. Itwas found that the fatigue life of the h igh density beam welded joint, under h igher stress levels, was shorter than that of the base m etal, however, the fatigue life of the h igh density beam welded joints was longer than that of the base m etal under lower stress levels. |
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| Keywords: | TC4 titanium alloy laser beam welding electron beam welding fatigue |
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