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Prediction of mechanical performance of Ti6Al4V cast alloy based on microCT-based load simulation

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dc.contributor.author du Plessis, Anton
dc.contributor.author Yadroitsava, Ina
dc.contributor.author le Roux, Stephan G.
dc.contributor.author Yadroitsev, Igor
dc.contributor.author Fieres, Johannes
dc.contributor.author Reinhart, Christof
dc.contributor.author Rossouw, Pierre
dc.date.accessioned 2018-08-31T06:26:10Z
dc.date.available 2018-08-31T06:26:10Z
dc.date.issued 2017
dc.identifier.issn 0925-8388
dc.identifier.issn 1873-4669
dc.identifier.uri http://hdl.handle.net/11462/1626
dc.description Published Article en_US
dc.description.abstract The effect of porosity on the mechanical properties of cast titanium alloy was investigated in this work, specifically for investment-cast Ti6Al4V. X-ray micro computed tomography (microCT) was used to nondestructively analyse pores in 10 samples prior to mechanical testing. A finite element analysis was done on the microCT data providing a 3D view and quantitative values for maximum stress areas. All 10 samples were again analysed by X-ray microCT after physical testing. This allowed the location of failure to be correlated to pores and regions of high stress from the calculations. All samples showed high tensile strength with little effect of the pore size or simulated stress, most likely due to the simplified casting geometry. Irrespective of the microstructure, it was found that an increasing pore size results in increasing simulated stresses around the pores, which correlate strongly with a decrease in the measured ductility of the samples. This result indicates that induced stresses when a sample is put under load affects the ductility, since ductility depends on stress state of the material. Moderate correlation of the simulated stresses with ultimate tensile strength was found for samples with homogeneous microstructure. en_US
dc.format.extent 882 325 bytes, 1 file
dc.format.mimetype Application/PDF
dc.language.iso en_US en_US
dc.publisher Journal of Alloys and Compounds en_US
dc.relation.ispartofseries Volume 724;
dc.subject Casting porosity en_US
dc.subject Tensile strength en_US
dc.subject Ductility en_US
dc.subject Ti6Al4V en_US
dc.subject microCT en_US
dc.subject Mechanical simulation en_US
dc.title Prediction of mechanical performance of Ti6Al4V cast alloy based on microCT-based load simulation en_US
dc.type Article en_US

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