Abstract:To reveal influence factors on the very high cycle fatigue properties of Ti-6Al-4V alloy, uni-axial fatigue tests and fatigue crack propagation tests were conducted. In the uni-axial fatigue tests, specimens with artificial defects of several sizes were used. Both tests were performed in air and vacuum environments. The effects of environments around fatigue cracks on crack propagation properties were investigated. As a results, fatigue crack propagation rates in vacuum were lower than those in air, and the re… Show more
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