Fatigue crack nucleation and growth mechanisms for Ti6AI4V in different environments

被引：4
|
作者：
Baragetti, Sergio [1 ,2 ]
Foglia, Cristian [1 ]
Gerosa, Riccardo [3 ]
机构：
[1] Univ Bergamo, Dept Design & Technol, Viale Marconi 5, I-24044 Dalmine, Italy
[2] Univ Bergamo, GITT Ctr Innovat Management & Technol Transfer, I-24129 Bergamo, Italy
[3] Politecnico Milano, Dept Mech Engn, I-20156 Milan, Italy
来源：
ADVANCES IN FRACTURE AND DAMAGE MECHANICS XI | 2013年 / 525-526卷
关键词：
Ti6AI4V; fatigue crack growth; microstructure; K-t effect; corrosion; HIGH-CYCLE FATIGUE; TI-6AL-4V; STRESS;
D O I：
10.4028/www.scientific.net/KEM.525-526.505
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this work fracture surfaces of Ti-6A1-4V flat samples subjected to fatigue tests were examined by means of a scanning electron microscope. SEM analyses allowed to observe in detail the morphology of the fracture surfaces, in order to identify the crack nucleation zones and the crack growth mechanisms accurately. The surface morphologies were examined in order to compare the alloy behavior, considering different test environments and stress concentration factor values (K-t). The analyses resulted in the observation of different corrosion fatigue micro-mechanisms related to the stress concentration factor and to the test environment.
引用
收藏
页码：505 / +
页数：2
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