Effect of beta flecks on low-cycle fatigue properties of Ti-10V-2Fe-3Al
- College of Materials Science and Engineering, Northwestern Polytechnical University (China)
The effect of beta flecks on low-cycle fatigue (LCF) properties was investigated at room temperature for a high-temperature (α + β)-processed and also a β-processed Ti-10V-2Fe-3Al alloy. For both the (α + β)-processed and the β-processed material, beta flecks had a significant influence on LCF and tensile properties. The materials with beta flecks showed a loss in LCF life and ductility. Larger beta flecks resulted in lower LCF life and ductility. It seemed that β-forged material contained much smaller beta flecks but had a similar detrimental effect on LCF properties as the (α + β)-processed one. Based on the diffusion calculation, it could be concluded that chemical composition inhomogenieties could not be reduced by using beta forging in the 820 °C β region. Extensive light microscopy and scanning electron microscopy (SEM) observations showed that beta flecks were susceptive to crack nucleation and propagation.
- OSTI ID:
- 22860614
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 2 Vol. 9; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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