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    Effect of H-Doping on Damping Capacity of Various NiTi-Based Alloys at kHz Frequencies

    Source: Journal of Engineering Materials and Technology:;2006:;volume( 128 ):;issue: 003::page 254
    Author:
    B. Coluzzi
    ,
    A. Tuissi
    ,
    A. Biscarini
    ,
    G. Mazzolai
    ,
    F. M. Mazzolai
    DOI: 10.1115/1.2203202
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The internal friction Q−1 and the Young’s modulus E of NiTi based alloys have been measured as a function of temperature after various thermomechanical and hydrogen-doping treatments given to the materials. Hydrogen is found to play a major role introducing tall damping peaks associated with Snoek-type and H-twin boundary relaxations. Levels of Q−1 as high as 0.08 have been detected, which are among the highest to date measured in metal alloy systems. For appropriate alloy compositions, these peaks occur at around room temperature (for acoustical frequencies), thus providing a good opportunity to reduce machinery vibrations and noise pollution. In the paper, the conditions are highlighted under which maximum efficiency can be reached in the conversion of mechanical energy into heat.
    keyword(s): Temperature , Alloys , Damping , Frequency , Nickel titanium alloys , Elasticity , Hydrogen AND Internal friction ,
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      Effect of H-Doping on Damping Capacity of Various NiTi-Based Alloys at kHz Frequencies

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/133780
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    contributor authorB. Coluzzi
    contributor authorA. Tuissi
    contributor authorA. Biscarini
    contributor authorG. Mazzolai
    contributor authorF. M. Mazzolai
    date accessioned2017-05-09T00:20:02Z
    date available2017-05-09T00:20:02Z
    date copyrightJuly, 2006
    date issued2006
    identifier issn0094-4289
    identifier otherJEMTA8-27084#254_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/133780
    description abstractThe internal friction Q−1 and the Young’s modulus E of NiTi based alloys have been measured as a function of temperature after various thermomechanical and hydrogen-doping treatments given to the materials. Hydrogen is found to play a major role introducing tall damping peaks associated with Snoek-type and H-twin boundary relaxations. Levels of Q−1 as high as 0.08 have been detected, which are among the highest to date measured in metal alloy systems. For appropriate alloy compositions, these peaks occur at around room temperature (for acoustical frequencies), thus providing a good opportunity to reduce machinery vibrations and noise pollution. In the paper, the conditions are highlighted under which maximum efficiency can be reached in the conversion of mechanical energy into heat.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEffect of H-Doping on Damping Capacity of Various NiTi-Based Alloys at kHz Frequencies
    typeJournal Paper
    journal volume128
    journal issue3
    journal titleJournal of Engineering Materials and Technology
    identifier doi10.1115/1.2203202
    journal fristpage254
    journal lastpage259
    identifier eissn1528-8889
    keywordsTemperature
    keywordsAlloys
    keywordsDamping
    keywordsFrequency
    keywordsNickel titanium alloys
    keywordsElasticity
    keywordsHydrogen AND Internal friction
    treeJournal of Engineering Materials and Technology:;2006:;volume( 128 ):;issue: 003
    contenttypeFulltext
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