The Effect of High Temperature Oxidation on the Fatigue Fracture Mechanism of Ti-4Al-2V Alloy

被引：0
|
作者：
Omidbakhsh, Faraz [1 ]
Ebrahimi, Ali Reza [1 ]
Zarei, Farhad [1 ]
机构：
[1] Sahand Univ Technol, Dept Mat Engn, Tabriz 513351996, Iran
来源：
TI-2011: PROCEEDINGS OF THE 12TH WORLD CONFERENCE ON TITANIUM, VOL III | 2012年
关键词：
High temperature oxidation; fracture mechanism; vacuum annealing; fatigue endurance limit; TITANIUM; OXYGEN; TI-6AL-4V; ALPHA;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of high temperature oxidation on high cycle fatigue fracture mechanism of Ti-4A1-2V alloy was investigated. The fatigue coupons were oxidized at different temperatures in air for 2 hours. Some of them were annealed at lower oxygen pressure (10(-5) torr) in the vacuum furnace. The high cycle fatigue (HCF) tests were performed under bending and rotating loadings. The experimental results were analyzed and S-N diagrams were plotted. The fatigue fracture mechanisms were studied with SEM. The results showed that fracture mechanism change during the oxidation, specifically during the vacuum annealing. Vacuum annealing treatment after the high temperature oxidation not only alters the fatigue fracture mechanism, but also improves the fatigue endurance limit.
引用
收藏
页码：1857 / 1859
页数：3
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