Effect of Strain Waveform on Low-Cycle Fatigue Life of Ti-6Al-4V Alloy at Elevated Temperature

被引：0
|
作者：
Nishino, Seiichi [1 ]
Shiozawa, Kazuaki [1 ]
Ohkuma, Tomonori [2 ]
机构：
[1] Dept. of Mech. Eng., Toyama Univ., Gofuku, Toyama 930-88555, Japan
[2] Toyama Univ., Gofuku, Toyama 930-88555, Japan
来源：
Zairyo/Journal of the Society of Materials Science, Japan | 2003年 / 52卷 / 07期
关键词：
Low-cycle fatigue life;
D O I：
10.2472/jsms.52.833
中图分类号：
学科分类号：
摘要：
The effect of strain waveform on low-cycle fatigue strength of Ti-6A1-4V alloy at elevated temperature was studied. Total strain controlled low-cycle fatigue tests were carried out using a smooth specimen with triangular and tension-hold or compression hold trapezoidal waveforms at 773K in air. From the experimental results, low-cycle fatigue life decreased by introducing a hold period as compared with that using a triangular waveform. The fatigue life of the compression-hold tests decreased as compared with tension-hold tests. The low-cycle fatigue life of Ti-6A1-4V alloy with each strain wave-form can be evaluated by considering the effect of mean-stress, oxidation of specimen surface and creep damage.
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页码：833 / 837
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