Temperature Independences of Fatigue Crack Growth in Ti–0.49 mass%O

Okuyama, Yelm; Tanaka, Masaki; Morikawa, Tatsuya

doi:10.2320/matertrans.mt-m2021211

Cited by 3 publications

(1 citation statement)

References 23 publications

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“…2(a)), which was under load control with a peak force of 1000 N, a triangular waveform at room temperature with a frequency of 1 Hz, and a load ratio of R = 0.1 with the same experimental setup as that for the previous studies. 28,29) We conducted a fatigue test while observing the area around the crack tip using optical microscopy per 100 cycles. The crack length (a) was measured from the optical images and is plotted against the total number of cycles (N t ) by the black open circles in Fig.…”

Section: Dwell Fatigue Testing Focused On Crack-openingcontrolled Cra...mentioning

confidence: 99%

Crack Tip Deformation during Dwell Fatigue and Its Correlation with Crack/Fracture Surface Morphologies in a Bi-Modal Ti–6Al–4V Alloy

et al. 2022

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We investigated how dwell fatigue loading accelerates the crack propagation in bi-modal Ti6Al4V alloy. A fatigue test was programmed to include displacement holding for only one cycle at several ¦K. We found (1) crack tip strain evolved during the displacement holding, (2) the displacement holding increased fatigue striation spacing, and (3) the strain increment during the displacement holding was linearly correlated with spacing of the displacement-holding-extended striations. These facts indicate that the dwell loading assisted crack opening, which accelerated the crack propagation. Other analyses results and discussion are also presented, in terms of crack propagation mode, crack closure, and dislocation structure.

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Section: Dwell Fatigue Testing Focused On Crack-openingcontrolled Cra...mentioning

confidence: 99%

Crack Tip Deformation during Dwell Fatigue and Its Correlation with Crack/Fracture Surface Morphologies in a Bi-Modal Ti–6Al–4V Alloy

et al. 2022

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Fatigue crack growth behavior for gas tungsten arc welded joint of TC2 titanium alloys sheets

Wang

Zhang

2023

Materials Science and Engineering: A

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Crack Tip Deformation during Dwell Fatigue and Its Correlation with Crack/Fracture Surface Morphologies in a Bi-Modal Ti-6Al-4V Alloy

Aoki,

Koyama,

Tanaka

et al. 2023

J. Japan Inst. Metals and Materials

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We investigated how dwell fatigue loading accelerates the crack propagation in bi-modal Ti-6Al-4V alloy. A fatigue test was programmed to include displacement holding for only one cycle at several ΔK. We found (1) crack tip strain evolved during the displacement holding, (2) the displacement holding increased fatigue striation spacing, and (3) the strain increment during the displacement holding was linearly correlated with spacing of the displacement-holding-extended striations. These facts indicate that the dwell loading assisted crack opening, which accelerated the crack propagation. Other analyses results and discussion are also presented, in terms of crack propagation mode, crack closure, and dislocation structure.

show abstract

Temperature Independences of Fatigue Crack Growth in Ti–0.49 mass%O

Cited by 3 publications

References 23 publications

Crack Tip Deformation during Dwell Fatigue and Its Correlation with Crack/Fracture Surface Morphologies in a Bi-Modal Ti–6Al–4V Alloy

Crack Tip Deformation during Dwell Fatigue and Its Correlation with Crack/Fracture Surface Morphologies in a Bi-Modal Ti–6Al–4V Alloy

Fatigue crack growth behavior for gas tungsten arc welded joint of TC2 titanium alloys sheets

Crack Tip Deformation during Dwell Fatigue and Its Correlation with Crack/Fracture Surface Morphologies in a Bi-Modal Ti-6Al-4V Alloy

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