Effect of Microstructure on Fatigue Crack Growth Behavior in Ti-6Al-4V Alloy.

淳, 菅田; 政弘, 城野; 美彦, 植松; 真広, 山本; 博昭, 植田

doi:10.2472/jsms.47.273

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another important aspect of the mechanical properties of biomaterials is fatigue resistance, which is dependent on the microstructure and stress ratio (the ratio of the minimum to the maximum stress) [4,[10][11][12][13][28][29][30][31][32][33][34][35][36][37][38][39]. Kitahara et al [11] determined that the characteristics of fatigue crack propagation in CP titanium are affected by the microstructure, and that the threshold stress intensity range, Kth, decreases as the grain size decreases with increasing number of accumulative roll bonding cycles.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of near-threshold fatigue crack propagation in harmonic-structured CP titanium with a bimodal grain size distribution

Kikuchi

Mori

Kubozono

et al. 2017

Engineering Fracture Mechanics

View full text Add to dashboard Cite

To examine near-threshold fatigue crack propagation in commercially pure (CP) titanium with a bimodal harmonic structure, which is defined as a coarse grained structure surrounded by a network of fine grains, K-decreasing tests were conducted. The crack growth rates for harmonic-structured CP titanium were higher than those for homogeneous material with coarse grains at comparable stress intensity range, while the threshold stress intensity range was lower. This phenomenon was attributed to a reduction in the extent of crack closure and the effective threshold stress intensity range, resulting from the presence of fine grains in the harmonic structure.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of near-threshold fatigue crack propagation in harmonic-structured CP titanium with a bimodal grain size distribution

Kikuchi

Mori

Kubozono

et al. 2017

Engineering Fracture Mechanics

View full text Add to dashboard Cite

show abstract

Effect of harmonic structure design with bimodal grain size distribution on near-threshold fatigue crack propagation in Ti–6Al–4V alloy

Kikuchi

Imai

Kubozono

et al. 2016

International Journal of Fatigue

View full text Add to dashboard Cite

Proposal of Fatigue Limit Design Curves for Additively Manufactured Ti-6Al-4V in a VHCF Regime Using Specimens with Artificial Defects

Uematsu

Kakiuchi

Han

et al. 2021

Metals

View full text Add to dashboard Cite

Cantilever-type rotating bending fatigue tests were conducted under a very high cycle fatigue regime using conventionally manufactured Ti-6Al-4V specimens having drilled artificial defects with different sizes. The relationship between fatigue limit and defect size was defined as a fatigue limit design curve considering the transition from the fracture-mechanics dominating area to the fatigue-limit dominating area. A conventional Murakami’s equation was applicable as a design curve of additively manufactured Ti-6Al-4V with defects at 107 cycles. However, conventional equation gave un-conservative predictions for the fatigue limit at 108 cycles. Therefore, two kinds of modified Murakami’s equation were proposed as fatigue limit design curves for the very high cycle fatigue regime. Simple parallel shift of Murakami’s equation gave a conservative fatigue limit, whilst better result was obtained by changing the slope of Murakami’s equation. The proposed design curve was valid for the defect sizes ranging from 10 to 500 μm.

show abstract

Effect of Microstructure on Fatigue Crack Growth Behavior in Ti-6Al-4V Alloy.

Cited by 3 publications

References 0 publications

Evaluation of near-threshold fatigue crack propagation in harmonic-structured CP titanium with a bimodal grain size distribution

Evaluation of near-threshold fatigue crack propagation in harmonic-structured CP titanium with a bimodal grain size distribution

Effect of harmonic structure design with bimodal grain size distribution on near-threshold fatigue crack propagation in Ti–6Al–4V alloy

Proposal of Fatigue Limit Design Curves for Additively Manufactured Ti-6Al-4V in a VHCF Regime Using Specimens with Artificial Defects

Contact Info

Product

Resources

About