Comparison of cryogenic and cold deformation of commercially pure titanium

Mertová, Kateřina; Salvetr, Pavel; Duchek, Michal

doi:10.1016/j.matpr.2019.12.324

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…A decrease in ductility is seen with the progress of cold rotary swaging. This effect was also reported in [4,16,17,28]. On the other hand, a single Conform SPD pass and rotary swaging of both titanium Grades led to higher strengthening behaviour and a smaller decrease in ductility in comparison to only rotary swaged samples.…”

Section: Discussionsupporting

confidence: 77%

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Optimization of the Mechanical Performance of Titanium for Biomedical Applications by Advanced, High-Gain SPD Technology

et al. 2020

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This recent study deals with the optimization of the mechanical performance of Grade 2 and Grade 4 titanium with Conform severe plastic deformation (SPD) processing and subsequent rotary swaging. A comprehensive study of the materials behaviour and characterisation during and after processing is given by (finite element method - FEM) numerical simulation, microscopy methods and mechanical testing. The mechanical and fatigue properties are discussed in terms of texture and microstructure evolution. It is shown that the combination of Conform SPD and rotary swaging is a promising technique for economically reliable, high-gain production of titanium alloys fulfilling requirements for biomedical applications. Such a processing can improve the mechanical properties of the unalloyed titanium to the level of the commonly used Ti-6Al-4V.

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Section: Discussionsupporting

confidence: 77%

“…The mechanical properties are a critical issue in the case of dental implants and orthopaedic screws. Therefore, in order to meet high requirements for specific surgical applications, improved processing paths are necessary to allow the use of high strength CP grades not containing potentially harmful elements V and Al [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Mechanical Performance of Titanium for Biomedical Applications by Advanced, High-Gain SPD Technology

et al. 2020

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“…For heat treatment, α phases are not sensitive, so commercially pure titanium cannot be enhanced in strength by heat-treatment methods and generally has only moderate strength levels [6]. Among them, grade 4 (Gr.4) has the highest strength and hardness with a minimum yield strength of 480 MPa, and it also has the highest oxygen and iron content [7]. Therefore, to meet the increasing requirements of comfort and being lightweight, for the function of electronic products, grade 4 strips are designed to be the basis materials for making some high-end electronic-product precision components, which not only require the strips to have high-precision surface quality but also have excellent mechanical properties [8].…”

Section: Introductionmentioning

confidence: 99%

“…Claudio et al [5] conducted a study on the thermomechanical process of Gr.4 sheets and found that the microstructure evolution of the alloys could be modified by adding a small amount of iron. Mertov á K et al [7], comparatively, studied rotary-swaged (cold swaging) of industrially pure titanium Gr.2 and Gr.4 at room and low temperature, and a high strength was obtained for both materials though minor surface defects appeared. Islamgaliev et al [9] investigated the microstructure and mechanical properties of Gr.4 prepared by high pressure torsion (HPT) and found that the tensile strength of Gr.4 after HPT processing achieves 1600 MPa, and the grain size was also significantly refined.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cold Deformation on Microstructure and Mechanical Behavior of Commercially Pure Grade 4 Titanium Strip

Zhu

Wan

et al. 2022

Metals

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The microstructure and mechanical behavior of commercially pure grade 4 (Gr.4) titanium strips with different deformations were studied by optical microscope (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), uniaxial tensile test, and hardness test. The work-hardening characteristics of a Gr.4 strip were analyzed with a true-stress–strain curve. The results show that cold deformation can significantly improve the strength and hardness of a commercially pure titanium Gr.4 strip, which has significant work hardening characteristics. With the increase in deformation amount, the grain is stretched into a fibrous shape along the longitudinal direction, while the strength and hardness increase and the plasticity decreases. Moreover, there is a significant linear relationship between the tensile strength and hardness. The true-stress–true-strain curves of a Gr.4 strip in different states were analyzed by combining three hardening models. It was found that the true-stress–true-strain curve of an annealed Gr.4 strip can be regressed by the Ludwigson, Voce, and Swift models, the Ludwigson model has a higher fitting accuracy, and the fitting results of the tensile true-stress–true-strain curves of Gr.4 strips after cold deformation hardening are not ideal. The cold deformation mechanism of a Gr.4 strip is mainly based on slippage, with an increase in dislocation density and dislocation tanglement leading to work-hardening behavior during cold deformation.

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Effect of Tool Rotational Speed on the Microstructure and Associated Mechanical Properties of Incrementally Formed Commercially Pure Titanium

Yoganjaneyulu

Vigneshwaran²,

Palanivel

et al. 2021

J. of Materi Eng and Perform

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Comparison of cryogenic and cold deformation of commercially pure titanium

Cited by 4 publications

References 10 publications

Optimization of the Mechanical Performance of Titanium for Biomedical Applications by Advanced, High-Gain SPD Technology

Optimization of the Mechanical Performance of Titanium for Biomedical Applications by Advanced, High-Gain SPD Technology

Effect of Cold Deformation on Microstructure and Mechanical Behavior of Commercially Pure Grade 4 Titanium Strip

Effect of Tool Rotational Speed on the Microstructure and Associated Mechanical Properties of Incrementally Formed Commercially Pure Titanium

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