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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50212


    Title: Dynamic strain aging in low cycle fatigue of duplex titanium alloys
    Authors: Lin,YH;Hu,KH;Kao,FH;Wang,SH;Yang,JR;Lin,CK
    Contributors: 機械工程學系
    Keywords: COMMERCIALLY PURE TITANIUM;STAINLESS-STEEL;TENSILE PROPERTIES;DEFORMATION MECHANISMS;TEMPERATURE;BEHAVIOR;RATES;COMPRESSION;TI-6AL-4V;303-K
    Date: 2011
    Issue Date: 2012-03-27 17:06:36 (UTC+8)
    Publisher: 國立中央大學
    Abstract: The influence of dynamic strain aging (DSA) on low cycle fatigue (LCF) in duplex Ti-6-4 and SP700 titanium alloys was studied. LCF was performed within the temperature range from 350 degrees C to 450 degrees C, at strain rates of 10(-3) s(-1) and 10(-4) s(-1), and strain amplitudes of 1.25% and 2%. DSA appeared as serrations at the plastic portion of the cyclic stress-strain hysteresis loop, as well as stress humps appearing in the cyclic stress response (CSR) curve of peak tensile stress response versus cycle number. Strain-induced micro twin formation was only observed in the sample after fatigue with 2% strain amplitude under a 10(-4) s(-1) strain rate, indicating that it is a DSA induced phenomenon. (C) 2011 Elsevier B.V. All rights reserved.
    Relation: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
    Appears in Collections:[機械工程學系] 期刊論文

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