Sintering Behavior and Mechanical Properties of Injection Molded Ti-6Al-4V Alloys

秀士, 三浦; 光家, 竹増; 友紀, くわ野; 芳典, 伊藤; 憲治, 佐藤

doi:10.2497/jjspm.53.815

Cited by 28 publications

(18 citation statements)

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“…Oxygen is detrimental to ductility of Ti-6Al-4V especially when it exceeds certain level [97][98][99]. Miura et al [26] suggests the critical oxygen level for PM Ti-6Al-4V is 0.33 wt.%, above which ductility drops rapidly and can be much lower than the corresponding ASTM specification (see Fig. 1b).…”

Section: Dependence Of α Colony Size On Heat Treatment and Microstrucmentioning

confidence: 98%

“…Oxygen impurity is an issue to most Ti materials and it is addressed in this chapter as well; counter measurements to mitigate oxygen have been suggested which involves the use of rare earth based materials. [25] and (b) ductility of PM Ti-6Al-4V as a function of oxygen [26]. Table 1 and Table 2 list the fundamental physical and mechanical properties of the Ti-6Al-4V, respectively [14,15,27,28].…”

Section: Introductionmentioning

confidence: 99%

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An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Yan¹,

Yu²

2015

Sintering Techniques of Materials

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Section: Dependence Of α Colony Size On Heat Treatment and Microstrucmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Yan¹,

Yu²

2015

Sintering Techniques of Materials

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“…It is necessary to understand how the oxygen affects titanium alloys to get an idea which levels of oxygen are tolerable in titanium alloys and which efforts to reduce and control oxygen levels are reasonable with respect to cost efficiency. Investigations [3,4] on MIM Ti-6Al-4V revealed the existence of a critical oxygen level at ~0.33wt.% as illustrated in Fig. 1 where the tensile elongation drops rapidly from 15% to 3%.…”

Section: Introductionmentioning

confidence: 99%

“…Fig. 1 Effect of oxygen on the tensile elongation of as sintered MIM Ti-6Al-4V: (a) by Miura [3] and (b) by Ebel et al [4].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Oxygen on the Fatigue Behaviour of Ti-6Al-7Nb Alloy

Hidalgo

Ebel

Limberg

et al. 2016

KEM

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Abstract.One of the challenges in PM Ti alloys is to control the impurities level. Oxygen affects the microstructure and the mechanical properties of titanium alloys. Ti-6Al-7Nb is a promising alloy to use in PM due to its outstanding biocompatibility and mechanical properties required for load bearing medical implants. In this work, the influence of the impurities content on the ductility, fatigue resistance and microstructure of Ti-6Al-7Nb alloy processed by metal injection moulding was examined. Tensile and fatigue specimens were manufactured using Ti-6Al-7Nb gas atomized powder. Depending on the thermal treatment time, various oxygen contents were introduced into the specimens. The resulting oxygen content was determined by melt extraction technique. Tensile tests and high cycle four-point bending fatigue tests at room temperature were performed. First studies about the effect of oxygen content on crack initiation and propagation were done by the observation of microstructures and fractured surfaces using light and electron microscopy (SEM).

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Metal Injection Molding (MIM) Processing

Miura

Osada

Itoh

2015

Springer Series in Biomaterials Science and Engineering

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Complex-shaped components can be obtained by net or near-net shaping through the powder metallurgy processing route such as metal injection molding (MIM) process. MIM is an advanced powder processing technique for the mass production of complex-shaped components. This technology also reduces the material used for production and processing cost. Sintered compacts obtained by MIM process show high density over 95 % and excellent mechanical properties. Titanium and its alloys are used in biomedical applications because of their excellent characteristics such as high specific strength, corrosion resistance, biocompatibility, and so on. MIM process is a suitable technique for titanium and its alloys to reduce the processing cost and material cost. In this chapter, tensile and fatigue properties of MIM compacts fabricated with Ti, Ti-6Al-4V, Ti-6Al-4V-4Cr, and Ti-6Al-7Nb are reviewed. IntroductionMetal injection molding (MIM) combines the most useful characteristics of powder metallurgy (PM) and plastic injection molding to facilitate the production of small, complex-shaped metal components with outstanding mechanical properties.Injection molding is a productive and widely used technique for shaping plastics. Alternatively, metals have advantages over polymers in mechanical properties and electrical and thermal conductivity. PM also has advantages such as easy alloying by powders and recycle ability. MIM uses the metal powder and binder plastics; thus, this is a combined process of injection molding and PM.

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Sintering Behavior and Mechanical Properties of Injection Molded Ti-6Al-4V Alloys

Cited by 28 publications

References 1 publication

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

An Overview of Densification, Microstructure and Mechanical Property of Additively Manufactured Ti-6Al-4V — Comparison among Selective Laser Melting, Electron Beam Melting, Laser Metal Deposition and Selective Laser Sintering, and with Conventional Powder

Influence of Oxygen on the Fatigue Behaviour of Ti-6Al-7Nb Alloy

Metal Injection Molding (MIM) Processing

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