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- W2363602119 abstract "High Nb-TiAl alloys were prepared by gelcasting method and sintering in argon atmosphere from Ti-45Al-8.5Nb-0. 2B-0. 2W-0. 1Y spherical prealloyed powder and mixed element powders Ti+45% Al+10% Nb( at%). The results show that the slurry of spherical prealloyed powder has better rheological properties,and the solid loading of former slurry was up to 70 vol%. The dried bodies using the non-aqueous system gelcasting were sintered at 1480℃ for 2 hours in argon atmosphere. The relative density of sample with solid loading at 70 vol% from prealloyed powder reaches to 99.1%,much higher than relative density 85. 5% of the mixed element powder( solid loading at 50 vol%). The microstructure of the sintered high Nb containing TiAl was analyzed by using electronic microscopy( SEM) and X-ray diffraction( XRD). The results show the sample from prealloyed power consists mainly of γ-TiAl and β-Ti2Al; the element power was mainly composed of γ-TiAl and a small amount of α and β with fine lamellar microstructure. After the prealloyed powders were gelcasting and sintered at 1480℃ for 2 hours,high Nb-TiAl alloys with high density and fine microstructure could be obtained and with the compressive strength of 1715MPa and the relative compressive ratio of 1. 85%." @default.
- W2363602119 created "2016-06-24" @default.
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- W2363602119 date "2013-01-01" @default.
- W2363602119 modified "2023-09-24" @default.
- W2363602119 title "Preparation of high Nb-TiAl alloy by gelcasting method" @default.
- W2363602119 hasPublicationYear "2013" @default.
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