Effect of the notch depth on fracture behavior of TC4 titanium alloy sheets

Wang, Yue; Ma, He; Zhang, Yanhua

doi:10.1016/j.engfracmech.2022.108947

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…Ju, Lee, and Jang [60] demonstrated the effect of crystallographic texture on the fracture toughness of the API 5L X65 pipeline steel using texture analysis through pole figure measurement of the volume fraction of crystallographic planes as a function of the angle to the rolling direction of the plates. Their results showed that all the planes had uniform distribution, but the {110} plane showed more density in the transverse to the rolling direction [61,62]. The {110} plane is one of the most densely packed planes of body-centered cubic (BCC) ferrite crystals, being, therefore, responsible for the plastic deformation that precedes ductile tearing at the upper shelf regime, and this was the reason the authors provided to explain the higher fracture toughness observed at the transverse direction in comparison to the rolling direction.…”

Section: Tensile and Fracture Toughness Anisotropymentioning

confidence: 99%

Ductile Fracture Behavior of ASTM A516 Gr.70 Pressure Vessel Steel by ASTM and ISO Fracture Toughness Standards

Coelho

Silva

Santos

et al. 2023

Metals

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Fracture toughness determination is crucial for the design phase of pressure vessels, and, although ASTM E1820 and ISO 12135 fracture toughness standards have existed for some time, some differences have been reported in the determination of this property. This study investigates the ductile fracture behavior of ASTM A516 Gr.70 pressure vessel steel and assesses the differences in estimating both standards. The steel’s tensile properties and initiation fracture toughness (JIC) were evaluated, taking into account the parallel and perpendicular orientations to the rolling direction. The results reveal the properties’ dependence on the rolling direction, mainly attributed to perlite banding. Additionally, as for the JIC determination, the differences were associated with the different blunting line slope estimations on each standard, reinforcing the necessity of a work-hardening-based blunting line for each material assessed.

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Section: Tensile and Fracture Toughness Anisotropymentioning

confidence: 99%

Ductile Fracture Behavior of ASTM A516 Gr.70 Pressure Vessel Steel by ASTM and ISO Fracture Toughness Standards

Coelho

Silva

Santos

et al. 2023

Metals

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“…Its use in petroleum exploration and development will become more widespread as the price of titanium alloy continues to drop and processing and manufacturing technology advances [11][12][13][14]. Wang et al [15] analyzed the mechanical qualities of TC4 titanium alloy. To explore the strength limit of drill pipe more accurately under tensile and torsion combined load, the author conducted laboratory tests, drew a yield limit curve of pipe body and joint under tensile and torsion combined load, and examined how temperature and thickness affected the drill pipe's mechanical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Strength limit of titanium alloy drill pipe under combined tension and torsion load

Tian,

Wang,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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With a focus on the issue of drill pipe failure brought on by the interaction of tension and torsion in deep and ultra-deep wells, the yield limit curve of the pipe body and joints under the combination of tension and torsion was drawn. According to the practice of DNV-RP-F201, it was investigated how temperature affected drill pipe strength. The findings demonstrate that as temperature increases, both yield and tensile strength decrease linearly, and the decreasing range gradually decreases when temperature exceeds 140°C, and yield strength decreases by 31.91% in 140°C. Under the conditions of the same yield strength and outer diameter, the larger the thickness of the drill pipe body is, the higher its tensile strength and torsional strength are. The resulting yield limit curve covers a wider range. As the temperature increases, the yield limit elliptic curves of titanium alloy drill pipes with various wall thicknesses gradually shrink. This work presents the foundation for the strength research of titanium alloy drill pipe under tension and torsion load.

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“…In notched specimens, cracks originate from both sides and propagate towards the center until fracture occurs. Wang [ 9 ] assessed the influence of notch depth on a low-stress brittle fracture of a TC4 substrate, revealing an escalating trend of crack formation with increasing notch depth. This occurrence is influenced by stress concentration and the combined impact of stress field intensity.…”

Section: Introductionmentioning

confidence: 99%

Influence of Femtosecond Laser Surface Modification on Tensile Properties of Titanium Alloy

Zhou,

Nie,

Che

et al. 2024

Micromachines

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Titanium alloy components often experience damage from impact loads during usage, which makes improving the mechanical properties of TC4 titanium alloys crucial. This paper investigates the influence of laser scanning irradiation on the tensile properties of thin titanium alloy sheets. Results indicate that the tensile strength of thin titanium alloy sheets exhibits a trend of initial increase followed by a decrease. Different levels of enhancement are observed in the elongation at break of a cross-section. Optimal improvement in the elongation at break is achieved when the laser fluence is around 8 J/cm2, while the maximum increase in tensile strength occurs at approximately 10 J/cm2. Using femtosecond laser surface irradiation, this study compares the maximum enhancement in the tensile strength of titanium alloy base materials, which is approximately 8.54%, and the maximum increase in elongation at break, which reaches 25.61%. In addition, the results verify that cracks in tensile fractures of TC4 start from the middle, while laser-induced fracture cracks occur from both ends.

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Effect of the notch depth on fracture behavior of TC4 titanium alloy sheets

Cited by 6 publications

References 22 publications

Ductile Fracture Behavior of ASTM A516 Gr.70 Pressure Vessel Steel by ASTM and ISO Fracture Toughness Standards

Ductile Fracture Behavior of ASTM A516 Gr.70 Pressure Vessel Steel by ASTM and ISO Fracture Toughness Standards

Strength limit of titanium alloy drill pipe under combined tension and torsion load

Influence of Femtosecond Laser Surface Modification on Tensile Properties of Titanium Alloy

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