Influence of processing parameters on mechanical properties of Ti–6Al–4V alloy fabricated by MIM

Obasi, Gideon; Ferri, Orley Milagres; Ebel, Thomas; Bormann, R.

doi:10.1016/j.msea.2010.02.070

Cited by 79 publications

(42 citation statements)

References 6 publications

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“…As reported in ref., [31] a certain variation in the interstitial element contents is expected for the samples processed by MIM even if high process quality is assured. In addition, according to that study the measured variation cannot explain the differences in tensile properties.…”

Section: Tensile Propertiesmentioning

confidence: 99%

The Influence of a Small Boron Addition on the Microstructure and Mechanical Properties of Ti‐6Al‐4V Fabricated by Metal Injection Moulding

2011

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The effect of boron additions on the sintering behavior, microstructural development, and mechanical properties of a Ti‐6Al‐4V alloy fabricated by metal injection moulding (MIM) was studied. The addition of boron promotes a significant refinement of the microstructure by changing the microstructure from the typical lamellar to a more equiaxed morphology. The presence of both features: α colonies and α grains were confirmed by electron backscatter diffraction (EBSD) experiments. Furthermore, the pinning effect of TiB particles on grain boundary motion enhances the densification process due to the fact that the separation of pores and grain boundaries is suppressed. As a result of the refinement of the microstructure achieved by adding 0.5 wt% boron to the Ti‐6Al‐4V alloy, excellent tensile (σ0.2 = 787 MPa, UTS = 902 MPa and ε = 12%) and fatigue (endurance limit = 640 MPa) properties were obtained.

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Section: Tensile Propertiesmentioning

confidence: 99%

The Influence of a Small Boron Addition on the Microstructure and Mechanical Properties of Ti‐6Al‐4V Fabricated by Metal Injection Moulding

2011

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“…The availability of suitable powders and feedstock is not satisfactory to date. However, MIM of titanium and its alloys has been developed very successfully during the last decade [3][4][5][6][7][8] and excellent properties can be achieved, if processing is performed adequately. In addition, since spring 2011 ASTM standard F2885-11 for MIM processed Ti-6Al-4V intended for surgical implants is established, revealing the industrial interest in this technique.…”

Section: Introductionmentioning

confidence: 99%

From titanium to magnesium: processing by advanced metal injection moulding

et al. 2012

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Metal Injection Moulding (MIM) is a good candidate for economic manufacturing of complex shaped components in high quantities. This is especially true for materials which are rather expensive and hard to form like titanium alloys. However, the high affinity to interstitial elements as oxygen and carbon presents a specific challenge with regard to powder purity, handling and sintering as well as to binder system and its removal. In this paper three examples for manufacturing high quality samples of advanced materials are shown in detail. These comprise an optimisation of the well known Ti-6Al-4V alloy with regard to MIM processing and fatigue resistance by adding 0.5 wt% boron powder in order to effect. a reduction in grain size. Secondly, MIM processing of intermetallic Ti-45Al-5Nb-0.2B-0.2C (at %) intended for application in turbine engines and turbochargers. And thirdly, the status of MIM of magnesium alloys is presented. In this case fabrication of biodegradable implants with adjustable porosity is the main motivation for the application of MIM.

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“…7 depicts the presence of lamellae of α on the surface of the as-polished sample. The presence of lamellae of α demonstrates that the transformation α (β α) phase has separated the globular α and appears in terms of typical (α+β) phase of Ti-6Al-4V (Obasi et al, 2010). Thus, the presence of typical (α+β) phase as displayed in the Fig.…”

Section: Characterization Of the As-sintered Samplesmentioning

confidence: 72%

Development of Porous Ti-6Al-4V Mix with Palm Stearin Binder by Metal Injection Molding Technique

Jamaludin¹,

Kasim²,

Nor³

et al. 2015

American Journal of Applied Sciences

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Good potential of biocompatibility and excellent mechanical properties, porous Ti-6Al-4V has become a great interest for biomedical applications. In this study, porous Ti-6Al-4V was fabricated by Metal Injection Molding (MIM) using Palm Stearin (PS) and Polyethylene (PE) binder together with sodium chloride (NaCl) as a space holder. Rheological characterization was performed to evaluate the flowability of the feedstocks for injection molding and the feedstocks exhibited a pseudoplastic behavior which is suitable for injection. The as-sintered parts were fabricated as the mixing, injection molding, debinding and sintering were conducted successfully. The mechanical properties of the as-sintered parts were investigated via tensile test and the results obtained were closed with the established range. Shrinkage, density and X-Ray Diffractometry (XRD) of the as-sintered parts were compared with the theoretical values which were found closed to the acceptable ranges. The microstructure of the surface and cross-section were observed under Scanning Electron Micrograph (SEM) and optical microscope to analyze the specimens before and after sintering. Generally, palm stearin binder system added with space holder to fabricate porous Ti-6Al-4V by MIM is feasible and has shown a good potential for biomedical applications.

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Influence of processing parameters on mechanical properties of Ti–6Al–4V alloy fabricated by MIM

Cited by 79 publications

References 6 publications

The Influence of a Small Boron Addition on the Microstructure and Mechanical Properties of Ti‐6Al‐4V Fabricated by Metal Injection Moulding

The Influence of a Small Boron Addition on the Microstructure and Mechanical Properties of Ti‐6Al‐4V Fabricated by Metal Injection Moulding

From titanium to magnesium: processing by advanced metal injection moulding

Development of Porous Ti-6Al-4V Mix with Palm Stearin Binder by Metal Injection Molding Technique

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