Cost-Effective Blended Elemental Powder Metallurgy of Titanium Alloys for Transportation Application

Ивасишин, О. М.; Anokhin, V. M.; Demidik, A. N.; Savvakin, Dmytro G.

doi:10.4028/www.scientific.net/kem.188.55

Cited by 107 publications

(90 citation statements)

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“…Estas técnicas son las que potencialmente pueden obtener piezas 'near-net-shape' con un menor coste de fabricación [38] , especialmente si pueden evitarse post-procesados mediante prensado isostático en caliente. Además, esta técnica permite obtener aleaciones y materiales compuestos reforzados con partículas [39][40][41][42] .…”

Section: Procesado Del Titanio Por Pulvimetalurgiaunclassified

Introducción al procesado pulvimetalúrgico del titanio

Esteban¹,

Bolzoni²,

Ruiz-Navas³

et al. 2011

REVMETAL

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ResumenEl desarrollo de las nuevas tecnologías de extracción de titanio, que producen titanio elemental directamente en forma de polvo, sitúan a la pulvimetalurgia en un puesto estratégico para la fabricación de componentes de titanio. La disminución de coste del material base, junto a la economía de los procesos pulvimetalúrgicos, hacen más viable la diversificación de la industria del titanio, lo que permitiría alcanzar volúmenes de producción capaces de popularizar el metal y estabilizar su precio. En este trabajo se muestran algunas de las técnicas pulvimetalúrgicas empleadas para la fabricación de componentes de titanio a partir de los dos enfoques clásicos de mezcla de polvos elementales y el uso de polvos prealeados. Se describen entre otras las técnicas de prensado y sinterización convencional o compactación isostática en frío y caliente, que tratan de competir con las técnicas de procesado convencional, y se muestran algunas aplicaciones actuales y potenciales. Palabras claveTitanio; Pulvimetalurgia; Procesado del titanio.

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Section: Procesado Del Titanio Por Pulvimetalurgiaunclassified

Introducción al procesado pulvimetalúrgico del titanio

Esteban¹,

Bolzoni²,

Ruiz-Navas³

et al. 2011

REVMETAL

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“…The mechanical properties of PM Ti-6Al-4V, as reported in the literature, are summarised in the property maps given in Figure 30 and compared with literature-reported values for wrought Ti-6Al-4V [3,129,137,138,154,157,160,161,174,175,192,193,204,207,212,. The type of powder used, the sintering process, and any post-processing will affect the resulting mechanical properties.…”

Section: Static Propertiesmentioning

confidence: 99%

“…Since 2000, a significant amount of work regarding vacuum sintering of hydrogenated Ti powder has been reported by Ivasishin et al [147,170,175,[192][193][194][195][196] and Savvakin et al [197] It has been reported that a blend of Ti hydride with 10 wt-% 60Al/40V master-alloy powder produced Ti-6Al-4V with 98.5-99.5% TD in the as-sintered state, versus 90-95% when metallic Ti powder was used [193]. Additionally, it has been reported that using Ti hydride produced samples with an as-sintered oxygen content of 0.21 versus 0.39 wt-% when metallic Ti powder was used [198].…”

Section: Vacuum Sintering Tihmentioning

confidence: 99%

“…The elevated oxygen levels were produced by mixing Ti-6Al-4V and TiO 2 Figure 30. Mechanical property maps showing fields for the various PM processing routes versus WP: (a) using BE Ti powder with conventional sintering in the as-sintered state versus with subsequent post-processing (PP), (b) using PA Ti powder with pressureassisted sintering in the as-sintered state versus with subsequent post-processing, (c) using BE TiH 2 powder with vacuum sintering versus H 2 sintering (section 'Sintering of TiH 2 ') as well as H 2 sintering with subsequent post-processing [3,129,137,138,154,157,160,161,174,175,192,193,204,207,212,.…”

Section: Static Propertiesmentioning

confidence: 99%

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Powder metallurgy of titanium – past, present, and future

Fang

Paramore

Sun

et al. 2017

International Materials Reviews

411

158

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Powder metallurgy (PM) of titanium is a potentially cost-effective alternative to conventional wrought titanium. This article examines both traditional and emerging technologies, including the production of powder, and the sintering, microstructure, and mechanical properties of PM Ti. The production methods of powder are classified into two categories: (1) powder that is produced as the product of extractive metallurgy processes, and (2) powder that is made from Ti sponge, ingot, mill products, or scrap. A new hydrogen-assisted magnesium reduction (HAMR) process is also discussed. The mechanical properties of Ti-6Al-4V produced using various PM processes are analyzed based on their dependence on unique microstructural features, oxygen content, porosity, and grain size. In particular, the fatigue properties of PM Ti-6Al-4V are examined as functions of microstructure. A hydrogen-enabled approach for microstructural engineering that can be used to produce PM Ti with wroughtlike microstructure and properties is also presented.

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“…Owing to high cost, this titanium alloy is usually developed by near-net-shape PM (powder metallurgy) methods such as laser deposition. Ti-6Al-4V is still classified as one of the extremely difficult-to-machine materials using conventional machining which makes DLD an ideal manufacturing process for the same [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Powder Particle Size on the Fabrication of Ti-6Al-4V Using Direct Laser Metal Deposition from Elemental Powder Mixture

Chen¹,

Yan²,

Li³

et al. 2016

JMEA

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Direct LMD (laser metal deposition) was used to fabricate thin-wall Ti-6Al-4V using the powder mixture of Ti-6 wt.%Al-4 wt.%V. SEM (scanning electron microscopy), OM (optical microscopy) and EDS (energy dispersive spectroscopy) were employed to examine the chemical composition and microstructure of the as-deposited sections. Vickers hardness tests were then applied to characterize the mechanical properties of the deposit samples which were fabricated using pre-mixed elemental powders. The EDS line scans indicated that the chemical composition of the samples was homogenous across the deposit. After significant analysis, some differences were observed among two sets of deposit samples which varied in the particle size of the mixing Ti-6wt.%Al-4wt.%V powder. It could be found that the set with similar particle number for Ti, Al and V powder made composition much more stable and could easily get industry qualified Ti-6Al-4V components.

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Cost-Effective Blended Elemental Powder Metallurgy of Titanium Alloys for Transportation Application

Cited by 107 publications

References 0 publications

Introducción al procesado pulvimetalúrgico del titanio

Introducción al procesado pulvimetalúrgico del titanio

Powder metallurgy of titanium – past, present, and future

Effect of Powder Particle Size on the Fabrication of Ti-6Al-4V Using Direct Laser Metal Deposition from Elemental Powder Mixture

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