STUDY ON THE HIGH CYCLE FATIGUE PROPERTY OF <font>Ti</font>-600 ALLOY AT AMBIENT TEMPERATURE

Zeng, Li; Yang, Guanjun; Quan, Hong Zhu; Zhang, Yongqing

doi:10.1142/9789814322799_0041

Cited by 4 publications

(7 citation statements)

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“…A recent experimental study has been made of the high cycle fatigue properties of Ti-600 alloy at ambient temperature, made by the conventional IM route. 69 The alloy contained 0·1 wt-% yttrium (Y), which existed in the form of yttrium oxides ranging from submicrometres to a few micrometres, much coarser than the yttrium oxide dispersoids shown in Fig. 6.…”

Section: Control Of Oxygen In Titanium By Small Addition Of Rare Eart...mentioning

confidence: 99%

“…In the study in total 41 samples were fatigue tested at the conditions of R = 0·1 and cyclic life of N f = 1×10 7 , and it is found that the RE contained Ti-600 alloy shows a comparable fatigue strength ( σ = 475 MPa) to the commercial RE-free alloy IMI834 (σ = 500 MPa). 69 Transmission electron microscopy was used to examine large yttrium oxide particles in the fatigued microstructure (Fig. 7).…”

Section: Control Of Oxygen In Titanium By Small Addition Of Rare Eart...mentioning

confidence: 99%

“…Transmission electron microscopy observations of yttrium oxide particles in Ti–6Al–2·75Sn–4Zr–0·4Mo–0·45Si–0·1Y (wt-%) samples fatigued at cyclic stress of 500 MPa ( R = 0·1) for 9·527×105 cycles. 69 No fatigue cracks were found to initiate from the yttrium oxide particles…”

Section: Control Of Oxygen In Titanium By Small Addition Of Rare Eart...mentioning

confidence: 99%

See 2 more Smart Citations

Review of effect of oxygen on room temperature ductility of titanium and titanium alloys

Yan¹,

Xu²,

Dargusch³

et al. 2014

Powder Metallurgy

218

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Room temperature tensile ductility is an important property of titanium (Ti) and titanium alloys for structural applications. This article reviews the dependency of tensile ductility on oxygen for α-Ti, (α+β)-Ti and β-Ti alloys fabricated via traditional ingot metallurgy (IM), powder metallurgy (PM) and additive manufacturing (AM) or three-dimensional printing methods and recent advances in understanding the effect of oxygen on ductility. Seven mechanisms have been discussed based on case studies of individual titanium materials reported in literature. The dependency of ductility on oxygen is determined by both the composition and microstructure of the titanium alloy. For Ti–6Al–4V (wt-%), as sintered Ti–6Al–4V shows a critical oxygen level of about 0·33 wt-% while additively manufactured Ti–6Al–4V exhibits different critical levels ranging from about 0·22% to well above 0·4% depending on microstructure. Rare earth (RE) elements are effective scavengers of oxygen in titanium materials even just with a small addition (e.g. 0·1 wt-%), irrespective of the manufacturing method (IM, PM and AM). High cycle fatigue experiments revealed no initiation of fatigue cracks from the resulting RE oxide particles over the size range from submicrometres to a few micrometres. A small addition of RE elements offers a practical and affordable approach to mitigating the detrimental effect of oxygen on ductility.

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Section: Control Of Oxygen In Titanium By Small Addition Of Rare Eart...mentioning

confidence: 99%

Section: Control Of Oxygen In Titanium By Small Addition Of Rare Eart...mentioning

confidence: 99%

Section: Control Of Oxygen In Titanium By Small Addition Of Rare Eart...mentioning

confidence: 99%

See 1 more Smart Citation

Review of effect of oxygen on room temperature ductility of titanium and titanium alloys

Yan¹,

Xu²,

Dargusch³

et al. 2014

Powder Metallurgy

218

View full text Add to dashboard Cite

show abstract

“…Furthermore, serious stress concentration due to the decreasing drastically of effective load area near the crack tip will produce local plastic deformation and lead to crack propagation more easily. When the crack length reaches to the critical size and the local stress exceeds the fracture strength of material, crack growth rate increases rapidly and ultimate fracture failure occurs [28][29][30].…”

Section: Discussionmentioning

confidence: 99%

Effect of fretting wear on very high cycle bending fatigue behaviors of FV520B steel

Song¹,

Wang²,

Xu³

et al. 2016

Tribology International

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“…Nevertheless, due to the combined effect of microstructure and environment, the fatigue properties of titanium alloy will be different in high cycle fatigue (HCF) and VHCF. For the effect of microstructure, different microstructure (such as bimodal, layered, equiaxed, and basket microstructure) will lead to different fatigue strength 10–16 . In addition, the fatigue strength of titanium alloy improves with the decrease of grain size, that is, the miniaturization of microstructure improved the fatigue strength 17 .…”

Section: Introductionmentioning

confidence: 99%

High cycle and very high cycle fatigue properties and microscopic crack growth modeling of Ti‐6.5Al‐3.5Mo‐1.5Zr‐0.3Si titanium alloy at elevated temperatures

Yuan

et al. 2022

Fatigue Fract Eng Mat Struct

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Pulsating tension fatigue tests were conducted at 25 C, 150 C, and 250 C to investigate the effect of temperature on high cycle and very high cycle fatigue behavior of titanium alloy. The fatigue strength decreases with the increase of temperature, and the surface failure is more sensitive to temperature than interior failure. Afterwards, the fatigue fracture morphology, microstructure, and texture of titanium alloy were characterized. The results show that the fracture of larger α p phase with the maximum shear stress and higher strain concentration is responsible for the facet formation. The formation of facets leads to the interior failure at different temperatures. Finally, combining with the definition of interior crack growth rate, an assessment approach was proposed to predict the crack growth rate within the inhomogeneous microstructure area (IMA), which takes crack growth acceleration caused by the increase of temperature into consideration. K E Y W O R D Selevated temperature effect, interior failure mechanism, micro-crack growth rate, titanium alloy, very high cycle fatigue

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STUDY ON THE HIGH CYCLE FATIGUE PROPERTY OF Ti-600 ALLOY AT AMBIENT TEMPERATURE

Cited by 4 publications

References 0 publications

Review of effect of oxygen on room temperature ductility of titanium and titanium alloys

Review of effect of oxygen on room temperature ductility of titanium and titanium alloys

Effect of fretting wear on very high cycle bending fatigue behaviors of FV520B steel

High cycle and very high cycle fatigue properties and microscopic crack growth modeling of Ti‐6.5Al‐3.5Mo‐1.5Zr‐0.3Si titanium alloy at elevated temperatures

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