Hot radial shear rolling and rotary forging of metastable beta Ti-18Zr-14Nb (at. %) alloy for bone implants: Microstructure, texture and functional properties

Sheremetyev, V.; Kudryashova, A. A.; Чеверикин, В. В.; Korotitskiy, Andrey; Галкин, С. П.; Прокошкин, С. Д.; Braïlovski, Vladimir

doi:10.1016/j.jallcom.2019.06.041

Cited by 59 publications

(25 citation statements)

References 21 publications

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“…Page 2 of 10 titanium alloy with controlled microstructure were carried out in [12,13]. Oppositely, the microstructure and properties investigations for titanium rods of small diameter (7-12 mm) are described in [14]. Also, the scientific research focused on obtaining the rods from new magnesium, copper, and aluminum alloys by RSR method are currently underway.…”

Section: Introductionmentioning

confidence: 99%

Microstructure evolution and property analysis of commercial pure Al alloy processed by radial-shear rolling

Gamin

Akopyan

Koshmin

et al. 2020

Archiv.Civ.Mech.Eng

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Section: Introductionmentioning

confidence: 99%

Microstructure evolution and property analysis of commercial pure Al alloy processed by radial-shear rolling

Gamin

Akopyan

Koshmin

et al. 2020

Archiv.Civ.Mech.Eng

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“…The structure, phase composition, texture, and consequently, the mechanical and functional properties of SMAs are commonly controlled by thermomechanical treatments (TMT) [6]. Combining the radial shear rolling (RSR) and rotary forging (RF) processes allows the formation of a favorable phase composition, structure and texture in semi-finished SMA products [7,8]. Applying radial shear rolling allows the efficient transformation of an ingot into a 10 -12 mm diameter bar with a refined and compacted structure along the bar cross-section [9].…”

Section: Introductionmentioning

confidence: 99%

“…Applying radial shear rolling allows the efficient transformation of an ingot into a 10 -12 mm diameter bar with a refined and compacted structure along the bar cross-section [9]. A subsequent rotary forging allows the manufacture of a long-length 3 -8 mm diameter bar stock with a homogenized structure [7]. Since rotary forging conditions determine the final structure of the bar stock, a rational selection of the RF temperature and deformation conditions is critical for the obtainment of an adequate set of properties of the final product.…”

Section: Introductionmentioning

confidence: 99%

Effect of forging temperature on the structure, mechanical and functional properties of superelastic Ti-Zr-Nb bar stock for biomedical applications

et al. 2022

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Ti-Zr-Nb shape memory alloys exhibit a unique combination of properties that make them suitable for bone implants: low Young's modulus, superelastic behavior, superior corrosion resistance, and non-toxicity of all the constitutive elements. In this study, superelastic Ti-19Zr-14Nb (at.%) alloy was subjected to a combination of radial shear rolling at 900°C and rotary forging in a temperature range from 500 to 700°C to form long-length bar stocks for bone implants fabrication. Features of the grain structure, phase composition, mechanical and functional properties of the long-length bar stocks were analyzed using light microscopy, X-ray analysis, as well as during mechanical and functional tests. It was shown that after radial shear rolling at 900°C, a heterogeneous grain structure was formed over the cross-section of the bar stock, and this structure was inherited after the subsequent rotary forging at 500°C. With an increase in the forging temperature, the structural heterogeneity is eliminated and the grain size increases, while the hardness and strength characteristics of the material decrease. After rotary forging at 700°C, the alloy manifests the best combination of structural, mechanical, and functional characteristics. In this state, the long-length bar stock demonstrates a homogeneous grain structure with a certain fraction of a dynamically polygonized substructure of β-phase, a satisfactory strength (UTS ≈ 580 MPa), a low Young's modulus (E ≈ 35 GPa), the high difference between dislocation and phase yield strength (Δσ ≈ 280 MPa), and a relatively large amount of superelastic recovery strain (ε r SE max ≈ 3.1%).

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“…However, the evolution of the structure of titanium-based alloys during radial forging (RF) has not been studied sufficiently. As is known [20][21][22], a stressed state is implemented in the dynamic deformation site in the process of compression of a cylindrical rod during radial forging, which is close to the triaxial compression and makes it possible to obtain large degrees of deformation of rods under dynamic influence without the formation of cracks.…”

Section: Introductionmentioning

confidence: 99%

Effect of Radial Forging on the Microstructure and Mechanical Properties of Ti-Based Alloys

Зуев

Shlyakhova

Баранникова

2020

Metals

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Radial forging is a reliable way to produce Ti alloy rods without preliminary mechanical processing of their surface, which is in turn a mandatory procedure during almost each stage of the existing technology. In the present research, hot pressing and radial forging (RF) of the titanium-based Ti-3.3Al-5Mo-5V alloy were carried out to study the specifics of plasticized metal flow and microstructural evolution in different sections of the rods. The structural analysis of these rods was performed using metallography and X-ray diffraction techniques. The X-ray diffraction reveals the two-phase state of the alloy. The phase content in the alloy was shown to vary upon radial forging. Finally, radial forging was found to be a reliable method to achieve the uniform fine-grained structure and high quality of the rod surface.

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Hot radial shear rolling and rotary forging of metastable beta Ti-18Zr-14Nb (at. %) alloy for bone implants: Microstructure, texture and functional properties

Cited by 59 publications

References 21 publications

Microstructure evolution and property analysis of commercial pure Al alloy processed by radial-shear rolling

Microstructure evolution and property analysis of commercial pure Al alloy processed by radial-shear rolling

Effect of forging temperature on the structure, mechanical and functional properties of superelastic Ti-Zr-Nb bar stock for biomedical applications

Effect of Radial Forging on the Microstructure and Mechanical Properties of Ti-Based Alloys

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