| TC4钛合金焊接接头疲劳性能试验研究 |
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| 引用本文： | 郭海丁,邬华芝,高德平,刘观日.TC4钛合金焊接接头疲劳性能试验研究[J].理化检验(物理分册),2002,38(12):529-531. |
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| 作者姓名： | 郭海丁 邬华芝 高德平 刘观日 |
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| 作者单位： | 南京航空航天大学能源与动力学院,南京,210016 |
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| 摘 要： | 对TC钛合金焊接试样进行了低周疲劳试验，在应变控制试验条件下，得到了焊接接头疲劳裂纹萌生寿命。选取弹性模量的变化间接反映焊接接头中的损伤，对焊接结构疲功损伤变化规律进行了探讨并建立了相应的应变－寿命预测方法，研究结果为航空发动机焊接结构寿命的预测提供了参考依据。
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| 关 键 词： | TC4钛合金 焊接接头 疲劳性能 试验研究 疲劳寿命 损伤变量 |
| 文章编号： | 1001-4012(2002)12-0529-03 |
| 修稿时间： | 2002年7月24日 |
AN EXPERIMENTAL STUDY OF FATIGUE PROPERTY OF TC4 TITANIUM ALLOY WELDED JOINT |
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| GUO Hai-ding,WU Hua-zhi,GAO De-ping,LIU Guan-ri.AN EXPERIMENTAL STUDY OF FATIGUE PROPERTY OF TC4 TITANIUM ALLOY WELDED JOINT[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2002,38(12):529-531. |
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| Authors: | GUO Hai-ding WU Hua-zhi GAO De-ping LIU Guan-ri |
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| Abstract: | This paper studies the low-cycle fatigue property of TC4 Titanium alloy welded joint. In the strain-controlled test, the fatigue life of crack initiation is measured for the welded joint. The elastic-modulus is used to represent damage variable. The damage rule of welded joint is discussed and the prediction equations of strain-life of fatigue are built, which can be used in forecasting the fatigue life of welded structure in aero-engine. |
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| Keywords: | TC4 Titanium alloy Welded joint Fatigue life Damage variable |
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