Effect of beta flecks on low-cycle fatigue properties of Ti-10V-2Fe-3Al
The effect of beta flecks on low-cycle fatigue (LCF) properties was investigated at room temperature for a high-temperature ({alpha} + {beta})-processed and also a {beta}-processed Ti-10V-2Fe-3Al alloy. For both the ({alpha} + {beta})-processed and the {beta}-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 {beta}-forged material contained much smaller beta flecks but had a similar detrimental effect on LCF properties as the ({alpha} + {beta})-processed one. Based on the diffusion calculation, it could be concluded that chemical composition inhomogeneities could not be reduced by using beta forging in the 820 C {beta} region. Extensive light microscopy and scanning electron microscopy (SEM) observations showed that beta flecks were susceptible to crack nucleation and propagation.
- Research Organization:
- Northwestern Polytechnical Univ., Shaanxi (CN)
- OSTI ID:
- 20075696
- 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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