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    Application of a Composite Model in the Analysis of Creep Deformation at Low and Intermediate Temperatures

    Source: Journal of Engineering Materials and Technology:;2017:;volume( 139 ):;issue: 004::page 41013
    Author:
    Yang, Xinjun
    ,
    Ling, Xiang
    DOI: 10.1115/1.4037312
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The creep behaviors of TA2 and R60702 at low and intermediate temperature were presented and discussed in this paper. Experimental results indicated that an apparent threshold stress was exhibited in the creep deformation of R60702. Meanwhile, the primary creep phase was found as the main pattern in the room temperature creep behavior of TA2. Compared with the exponential law, the power law has been proved to be a proper constitutive model in the description of primary creep phase. It also showed that θ projection method had its significant advantage in the evaluation of accelerated creep stage. Thus, a composite model which combined power law with θ projection method was applied in the creep curves evaluation at low and intermediate temperature. Based on the multiaxial creep deformation results, the model was modified and discussed. A linear relationship existed between composite model parameters and applied load. Finally, the creep life of TA2 and R60702 could be accurately predicted by the composite model, and it is suitable for the application in low and intermediate temperature creep life analysis.
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      Application of a Composite Model in the Analysis of Creep Deformation at Low and Intermediate Temperatures

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4233926
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    contributor authorYang, Xinjun
    contributor authorLing, Xiang
    date accessioned2017-11-25T07:16:17Z
    date available2017-11-25T07:16:17Z
    date copyright2017/3/8
    date issued2017
    identifier issn0094-4289
    identifier othermats_139_04_041013.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4233926
    description abstractThe creep behaviors of TA2 and R60702 at low and intermediate temperature were presented and discussed in this paper. Experimental results indicated that an apparent threshold stress was exhibited in the creep deformation of R60702. Meanwhile, the primary creep phase was found as the main pattern in the room temperature creep behavior of TA2. Compared with the exponential law, the power law has been proved to be a proper constitutive model in the description of primary creep phase. It also showed that θ projection method had its significant advantage in the evaluation of accelerated creep stage. Thus, a composite model which combined power law with θ projection method was applied in the creep curves evaluation at low and intermediate temperature. Based on the multiaxial creep deformation results, the model was modified and discussed. A linear relationship existed between composite model parameters and applied load. Finally, the creep life of TA2 and R60702 could be accurately predicted by the composite model, and it is suitable for the application in low and intermediate temperature creep life analysis.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleApplication of a Composite Model in the Analysis of Creep Deformation at Low and Intermediate Temperatures
    typeJournal Paper
    journal volume139
    journal issue4
    journal titleJournal of Engineering Materials and Technology
    identifier doi10.1115/1.4037312
    journal fristpage41013
    journal lastpage041013-6
    treeJournal of Engineering Materials and Technology:;2017:;volume( 139 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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