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忠彦, 古田; 繁, 倉本; 晟換, 黄; 一彦, 伊東; 卓, 斎藤

doi:10.2320/materia.43.154

Cited by 6 publications

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“…In order to investigate the phase constitutions in the Ti-Nb-Ta-Zr-O system, XRD analysis was carried out at room temperature after a solution treatment at 1323 K for 3.6 ks. Figure 2 shows the XRD profiles of the Ti-(32,36)Nb-2Ta-3Zr-0.3O alloy, scanned from 30 to 80 degrees in diffraction angle (2), and the series of Ti-XNb-2Ta-3Zr-0.5O alloys (X ¼ 30 to 36%). In the case of alloys with 0.3% oxygen, the XRD profile of the Ti-36Nb-2Ta-3Zr-0.3O alloy exhibits only bcc peaks.…”

Section: Phase Stability Depending On Niobium and Oxygen Contentsmentioning

confidence: 99%

“…Some metastable Ti-Nb-Ta-Zr-O alloys have outstanding mechanical and physical properties, such as a low Young's modulus with high strength, a low thermal expansion and good hot and cold workability. [1][2][3][4][5] Ti-Nb-Ta-Zr-O alloys also have good bio-compatibility and corrosionresistance. [6][7][8][9][10] Due to these experimental results, these alloys have gotten a lot of attention recently as metallic biomaterials for use in artificial bones or implants, 11,12) which require low Young's modulus and high strength when subjected to cycle loading under complicated conditions.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and Phase Stability of Ti-Nb-Ta-Zr-O Alloys

et al. 2007

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The effects of niobium and oxygen content on the mechanical properties, phase stability and elastic deformation behavior of Ti-Nb-Ta-Zr-O alloys were investigated by employing tensile tests, microstructure observations and XRD analysis. The basic composition of the tested alloys used was Ti-36%Nb-2%Ta-3%Zr-0.3%O (mass%), with the other alloys having lower niobium content (from 32% to 36%) and higher oxygen content (0.5%). Orthorhombic 00 was observed in the specimens with lower niobium content. Work hardening and elastic deformation behavior in the specimens with lower niobium (33% to 34%) and higher oxygen (0.5%) contents are similar to those of the alloy with basic composition; these specimens showed little work hardening and non-linearity in the elastic range of tensile deformation. The phase configuration analysis of these specimen alloys does not show the presence of any peaks other than the phase before and after cold working. The cold worked Ti-32%Nb-2%Ta-3%Zr-0.5%O has a Young's modulus of 55 GPa, a tensile strength of 1370 MPa and a tensile elongation of 12%. After heat treatment at 623 K for 600 s, the tensile strength of the alloy reaches 1500 MPa, with a Young's modulus of 58 GPa and a tensile elongation of 10%. [

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Section: Phase Stability Depending On Niobium and Oxygen Contentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Phase Stability of Ti-Nb-Ta-Zr-O Alloys

et al. 2007

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A novel β‐titanium alloy orthodontic wire

Chang

Tseng

2018

The Kaohsiung J of Med Scie

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This literature review investigated a recently developed orthodontic wire composed of a β-titanium alloy known as "Gum Metal" and compared its properties with those of conventional wires. The attractive properties of Gum Metal include an ultra-low Young's modulus, non-linear elastic behavior, ultra-high strength, high yield strain, high ductility, and superplastic deformability without work hardening at room temperature. The unique multifunctional characteristics of this new orthodontic wire make it almost ideal for orthodontic applications. The results of this literature review indicate the strong potential use of Gum Metal wire for improving and enhancing the effectiveness of orthodontic treatment.

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EBSP Analysis on Microstructure of Gum Metal after Plastic Deformation

Kuramoto¹,

Furuta²,

Hwang³

et al. 2005

J. Japan Inst. Metals

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EBSP (electron backscattering pattern) analysis was performed on microstructure of three b titanium alloy specimens after cold working to study peculiar plastic behavior of the multifunctional alloy, Gum Metal. The specimens employed were Ti 36 Nb 2Ta 3Zr 0.3O (mass) alloy (Gum Metal) and two reference alloys having lower and higher bcc phase stability than that of Gum Metal. Deformation twinning of {332}〈113〉was observed in the specimen with lower bcc stability, and dislocation glide in the specimen with higher bcc stability. Orientation boundaries with rotation angle of 10 30 degrees were observed in Gum Metal specimen, and they are considered to be identical to the giant planar faults which were observed in TEM in the previous study. It seems that the giant faults act as grain boundaries and numerous subgrains are generated in the later stage of plastic deformation. Amount of crystallographic rotation in deformed Gum Metal specimens was very large, which implies that huge elastic energy was stored during plastic deformation.

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Cited by 6 publications

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Mechanical Properties and Phase Stability of Ti-Nb-Ta-Zr-O Alloys

Mechanical Properties and Phase Stability of Ti-Nb-Ta-Zr-O Alloys

A novel β‐titanium alloy orthodontic wire

EBSP Analysis on Microstructure of Gum Metal after Plastic Deformation

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