Properties and Application of Iron-based Shape Memory Alloy

(整期优先)网络出版时间:2005-02-12
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ThepropertiesofFeMnSiCrNishapememoryalloywereinvestigated.TheresultsshowthatthebestshapememoryeffectofFel4Mn6Si9Cr5Nialloyis85%.Thetransformationamountoftheε→γtransformationisnotcompleteafterheatingthealloyto1000K,AsandAfpointsdropwithincreasedtransformationenthalpy(△Hγ→ε)bythermalcyclingandincreasedprestrain.Thealloyshowsalsogoodcreepandstressrelaxationresistance.Inaddition,thealloyhavingatensileforceof20kNandasealingpressureof6MPacansatisfyrequirementsforpossibleindustrialapplicationonpipejoints.