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The creep-fatigue interaction (CFI) tests of a TiAl alloy were carried out at 750°C and 800°C in air to investigate the effect of dwell time on fatigue life. The low cycle fatigue (LCF) and creep tests were also conducted for comparison. The life to failure decreased with increasing dwell time and decreased with increasing minimum strain rate. Two life models based on dwell time and minimum strain...
The strain-controlled low cycle fatigue (LCF) and creep-fatigue interaction (CFI) tests of a newly developed Ti-45Al-8Nb-0.2W-0.2B-0.02Y (at.%) alloy were carried out at 750 °C in air. The hysteresis loop, cyclic stress response and life modeling as well as failure mechanism of the alloy were investigated in detail. It was revealed that the tensile and compressive mean stresses would generate when...
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