acksarelikelytonucleateattheendsofshort-fibretibandpropagatetomatrixalloyathightemperaturesothatcompositesfailure.theyindicatethatundertakingloadofreinforcementsisvaluabletoimprovethemechanicalpropertiesatlowtemperature.athightemperature,thestrengtheningeffectresultsfromtheinteractionbetweenreinforcementsanddislocatio.dislocatioareliabletoaccumulateandentangleattheendsoftibwhiskers,whichbecomescrackresourceandmakestitaniummatrixcompositesfailure.comparedwithequiaxedornear-equiaxedticparticle,thestrengtheningeffectoftibwhiskerontitaniummatrixcompositesislowerthanthatoftic.thisisalsothemainreasonthattheadditionofgraphitetoformmoreticisvaluabletoimprovet
hemechanicalpropertiesathightemperature.
8.thecreepdeformationandcreepruptureliveshavebeeninvestigated.thecreepdeformationundertakesthefollowingthreestages:primarycreep,steadycreepandtertiarycreep.thecreeprupturelivesofinsitusynthesizedtitaniummatrixcompositesimprovesobviouslycomparedwithmatrixalloy.thecreeprupturelivesarecloselyrelatedtotemperatureandaliedstre.asthetemperatureandaliedloadincrease,thecreepandcreeprupturelifedecrease.theadditionofgraphitetoformmoreticparticleisvaluabletoimprovethecreeprupturelife.undertheconditionofhightemperatureandaliedstre,thefailureoftitaniummatrixcompositesresultsfromthecrackthatformsattheendsoftibwhisker.
inthispaper,thesynthesismechanismsofinsitusynthesizedtib,ticortibandticreinforcedtitaniummatrixcompositesarefirstlydiscuedintheory.basisontheresult,anewtechniquehasbeendeve
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