Modification of sintered titanium alloys by hot isostatic pressing

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dc.contributor.authorBolzoni, Leandro
dc.contributor.authorRuiz-Navas, Elisa María
dc.contributor.authorZhang, Deliang
dc.contributor.authorGordo, Elena
dc.coverage.spatialHeld in Brisbane, Australiaen_NZ
dc.date.accessioned2012-11-19T22:28:31Z
dc.date.available2012-11-19T22:28:31Z
dc.date.copyright2012-08
dc.date.issued2012
dc.description.abstractPowder metallurgy (PM) permits to obtain titanium alloys with properties and microstructures close to ingot metallurgy products. However, residual porosity is normally present in the products produced by the PM route of powder pressing and sintering (P&S)\, and this needs to be reduced by using post-sintering process step such as hot isostatic pressing (HIP) and forging. In this study, the microstructural and mechanical property changes caused by HIP of samples of two alloys, near-α Ti-3Al-2.5V alloy and α+β Ti-6Al-4V, produced by P&S route were investigated. Two types of powders were utilised: prealloyed powders and blend of elemental titanium powder and master alloy powder. Four conditions defined by HIP temperature, pressure and time were used to HIP the sintered samples with two geometries. The results show that, independent of the HIP conditions used, HIP increased the relative density of the samples to approximately 97.5% and their hardness by 30-50 HV depending on the HIP condition. However, HIP at 1000°C changes the fracture mode of the sintered samples from ductile to brittle.en_NZ
dc.identifier.citationBolzoni, L., Ruiz-Navas, E.M., Zhang, D. & Gordo, E. (2012). Modification of sintered titanium alloys by hot isostatic pressing. In 1st International Conference on Powder Processing, Consolidation and Metallurgy of Titanium, Brisbane, December 4-7 2011, (pp. 63-69). Brisbane, QLD.en_NZ
dc.identifier.doi10.4028/www.scientific.net/KEM.520.63en_NZ
dc.identifier.issn1013-9826
dc.identifier.urihttps://hdl.handle.net/10289/6861
dc.language.isoen
dc.publisherTrans Tech Publicationsen_NZ
dc.relation.isPartOfKey Engineering Materialsen_NZ
dc.relation.ispartofKey Engineering Materials
dc.sourcePowder Processing, Consolidation and Metallurgy of Titaniumen_NZ
dc.subjectHIPen_NZ
dc.subjectMaster alloysen_NZ
dc.subjectPowder metallurgyen_NZ
dc.subjectPrealloyeden_NZ
dc.subjectTi alloysen_NZ
dc.titleModification of sintered titanium alloys by hot isostatic pressingen_NZ
dc.typeConference Contributionen_NZ
pubs.begin-page63en_NZ
pubs.elements-id128468
pubs.end-page69en_NZ
pubs.finish-date2011-12-07en_NZ
pubs.start-date2011-12-05en_NZ
pubs.volume520en_NZ
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