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1.IntroductionCobalt-basesuperalloyshavewidelybeenusedashightemperaturestructuralcomponentsinaircraftandindustrialturbinesbecauseoftheirhighrupturestrength,goodhotcorrosionresistanceaswellashighincipientmeltfngpoint.Theyarestrengthenedprincipallybyca...