Effect of severe plastic deformation realized by hydrostatic extrusion and rotary swaging on the properties of CP Ti grade 2

Pachla, W.; Kulczyk, Mariusz; Przybysz, Sylwia; Skiba, J.; Wojciechowski, Krzysztof W.; Przybysz, Mariusz; Topolski, Krzysztof; Sobolewski, Andrzej; Charkiewicz, M.

doi:10.1016/j.jmatprotec.2015.02.027

Cited by 63 publications

(26 citation statements)

References 36 publications

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“…The microstructure is homogeneous over the cross section of the HE processed rods. 35) Similar microstructures were reported in previous works focusing on the microstructure evolution during hydrostatic extrusion of CP Ti. 36,37) Thorough microstructural characterization showed that its formation is related to twinning and dislocation glide operating in the material during HE processing.…”

Section: Effect Of He Processing On Microstructure Andsupporting

confidence: 84%

“…2) Numerous strategies have been developed to improve low tensile ductility in these materials, and their detailed description can be found in several review articles. 35) The effect of grain refinement on fatigue properties is unambiguous: UFG and NS metallic materials can demonstrate improved or degraded fatigue properties depending on the material, microstructure evolved in the material during SPD processing, and applied fatigue testing conditions, as described in the review article. 6) Fatigue crack growth anisotropy was reported for single-phase UFG pure Fe 7) and two-phase pearlitic steel 8) processed by HPT.…”

Section: Introductionmentioning

confidence: 99%

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Anisotropy of Tensile and Fracture Behavior of Pure Titanium after Hydrostatic Extrusion

et al. 2019

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Commercially pure titanium was subjected to hydrostatic extrusion resulting in formation of an ultra-fine grained microstructure with a strong ¡-fiber texture and significant improvement of mechanical strength. Anisotropy of the tensile and fracture behavior of the hydrostatically extruded material was studied. It will be demonstrated that the material has significantly higher yield strength along the extrusion direction, while in transversal direction it shows higher work hardening ability related to the ¡-fiber crystallographic texture. The anisotropy of the fracture behavior in these two directions is less pronounced. A slightly lower fracture initiation toughness and crack growth resistance along the extrusion axis can be related to a lower crack propagation resistance along the boundaries of the elongated grains. [

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Section: Effect Of He Processing On Microstructure Andsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Anisotropy of Tensile and Fracture Behavior of Pure Titanium after Hydrostatic Extrusion

et al. 2019

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“…However, the RSA450 sample exhibits a large fatigue ratio (0.56) at a high tensile strength of 870 MPa. One can see that the HCF behavior of the RSA450 sample differs significantly from that of conventional CG and UFG CP-Ti [22,23,24,25,26,27,28,29,30,31,32,33,34,35,39], and is close to that of the Ti-6Al-4V alloy.…”

Section: Resultsmentioning

confidence: 84%

“…A hot extruded bar in diameter of 32 mm was severely deformed by rotary swaging (RS) at room temperature (RT). The cross-section area reduction from 32 mm to 8 mm resulted in a strain of 2.77, according to ε = ln( A 0 / A ), where A 0 and A are the initial and final cross section area of samples, respectively [28]. Thereafter, the rods in the as-deformed state were annealed at 450 °C and 500 °C for 5 min, which were labeled as RSA450 and RSA500 samples, respectively.…”

Section: Methodsmentioning

confidence: 99%

Promising Tensile and Fatigue Properties of Commercially Pure Titanium Processed by Rotary Swaging and Annealing Treatment

Wang

Huang

et al. 2018

Materials

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The effect of the grain refinement and texture on tensile and fatigue properties in commercially pure titanium (grade 2) processed by rotary swaging (RS) and an annealing treatment is investigated. The as-processed sample consists of band-like grains on the longitudinal section and equiaxed grains on the transversal section and revealed an obvious <10-10> fiber texture with respect to the rod axis. Through this technique, a sample with a high tensile strength of 870 MPa, a high uniform elongation of 8.5%, and a high fatigue limit of 490 MPa can be achieved, and the tensile and fatigue properties are almost the same as those of a conventional Ti-6Al-4V alloy. The enhanced mechanical properties and plastic deformation mechanism are discussed in terms of the observed ultrafine-grained microstructure and strong fiber texture.

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“…The previous studies demonstrated that its efficiency in terms of refinement depends on the material features and processing conditions. [29][30][31] In this study, a near b-type ternary TNZ alloy was subjected to the HE process at room temperature (RT) in two stages, and its effect on mechanical properties, microstructure, and phase transformation behavior was investigated with an aim of producing a high-strength, low-modulus, biocompatible titaniumbased implant material.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Texture Evolutions of Biomedical Ti-13Nb-13Zr Alloy Processed by Hydrostatic Extrusion

Özaltın

Panigrahi

Chromiński

et al. 2017

Metall Mater Trans A

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A biomedical b-type Ti-13Nb-13Zr (TNZ) (wt pct) ternary alloy was subjected to severe plastic deformation by means of hydrostatic extrusion (HE) at room temperature without intermediate annealing. Its effect on microstructure, mechanical properties, phase transformations, and texture was investigated by light and electron microscopy, mechanical tests (Vickers microhardness and tensile tests), and XRD analysis. Microstructural investigations by light microscope and transmission electron microscope showed that, after HE, significant grain refinement took place, also reaching high dislocation densities. Increases in strength up to 50 pct occurred, although the elongation to fracture left after HE was almost 9 pct. Furthermore, Young's modulus of HE-processed samples showed slightly lower values than the initial state due to texture. Such mechanical properties combined with lower Young's modulus are favorable for medical applications. Phase transformation analyses demonstrated that both initial and extruded samples consist of a¢ and b phases but that the phase fraction of a¢ was slightly higher after two stages of HE.

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Effect of severe plastic deformation realized by hydrostatic extrusion and rotary swaging on the properties of CP Ti grade 2

Cited by 63 publications

References 36 publications

Anisotropy of Tensile and Fracture Behavior of Pure Titanium after Hydrostatic Extrusion

Anisotropy of Tensile and Fracture Behavior of Pure Titanium after Hydrostatic Extrusion

Promising Tensile and Fatigue Properties of Commercially Pure Titanium Processed by Rotary Swaging and Annealing Treatment

Microstructure and Texture Evolutions of Biomedical Ti-13Nb-13Zr Alloy Processed by Hydrostatic Extrusion

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