High-temperature creep of sapphire-fibre/titanium-aluminide-matrix composites

Sapphire fibers made by the internal crystallization method were introduced into Ti-Al-based matrices using presusre casting. Creep tests were started at temperatures beyond those normally considered for titanium aluminide alloys. The results of preliminary tests of AL2O3/TiAl composites show that u...

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Bibliographic Details
Published inScripta materialia Vol. 44; no. 10; pp. 2463 - 2469
Main Authors Mileiko, S.T., Povarova, K.B., Korzhov, V.P., Serebryakov, A.V., Kolchin, A.A., Kiiko, V.M., Starostin, M.Yu, Sarkissyan, N.S., Antonova, A.V.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 25.05.2001
Subjects
Casting
Creep
Intermetallic compounds
Oxides
Scanning electron microscopy (SEM), composites
Casting
Scanning electron microscopy (SEM), composites
Oxides
Intermetallic compounds
Creep
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Summary:Sapphire fibers made by the internal crystallization method were introduced into Ti-Al-based matrices using presusre casting. Creep tests were started at temperatures beyond those normally considered for titanium aluminide alloys. The results of preliminary tests of AL2O3/TiAl composites show that usage of such composite systems shifts the temperature limit for light structural material in terms of creep resistance to at least 1050 C. The creep strength on a 100 hr time base reaches 120 MPa at that temperature. (CSA)
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1359-6462
1872-8456
DOI:10.1016/S1359-6462(01)00924-1