Abstract
Role of Microstructure on Small Fatigue Crack Initiation and Propagation behavior of Rolled and Forged Ti-6Al-4V Alloy
Highlights
Fatigue life is determined by microscopic fatigue crack initiation and growth
Since fatigue crack is generally initiated on the slip plane of microstructure and propagated by slip deformation of the crack tip, fatigue life should depends on microstructure
Based on small fatigue crack observation, since fatigue crack growth life that fatigue crack is larger than 0.1 mm was comparable between forged and rolled sample, the difference in fatigue life was caused from microstructural fatigue crack initiation
Summary
Role of Microstructure on Small Fatigue Crack Initiation and Propagation behavior of Rolled and Forged Ti-6Al-4V Alloy National Institute for Materials Science, 1-2-1 Sengen, Tsukuba-shi, Ibaraki, 305-0047, Japan. Abstract: Fatigue life is determined by microscopic fatigue crack initiation and growth. Since fatigue crack is generally initiated on the slip plane of microstructure and propagated by slip deformation of the crack tip, fatigue life should depends on microstructure.
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