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    Microscale Mechanical Behavior of the Subsurface by Finishing Processes

    Source: Journal of Manufacturing Science and Engineering:;2005:;volume( 127 ):;issue: 002::page 333
    Author:
    Y. B. Guo
    ,
    A. W. Warren
    DOI: 10.1115/1.1807853
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Hard turning, grinding, and honing are common finishing processes in today’s production. The machined subsurface undergoes severe deformation and possible microstructure changes in a small scale subsurface layer (<20 μm). Mechanical behavior of this shallow layer is critical for component performance such as fatigue and wear. Due to the small size of this region, mechanical behavior of this shallow layer is hard to measure using traditional material testing. With the nanoindentation method, mechanical behavior (nanohardness and modulus) at the microscale in subsurface was measured for AISI 52100 and AISI 1070 steel components machined by hard turning, grinding, and honing. The test results show that white layer increases nanohardness but decreases modulus of a turned surface. Nanohardness and modulus of the ground surface are slightly smaller than the honed one in the subsurface. However, grinding produces higher nanohardness and modulus in near-surface (<10 μm) than honing, while honing produces more uniform hardness and modulus in the near-surface and subsurface, and would improve component performance. Nanohardness and modulus of the machined near-surface are strongly influenced by strain hardening, residual stress, size-effect, and microstructure changes.
    keyword(s): Finishing , Mechanical behavior , Microscale devices , Nanoindentation , Grinding , Stress , Work hardening , Turning , Steel , Wear , Size effect AND Fatigue ,
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      Microscale Mechanical Behavior of the Subsurface by Finishing Processes

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    contributor authorY. B. Guo
    contributor authorA. W. Warren
    date accessioned2017-05-09T00:16:58Z
    date available2017-05-09T00:16:58Z
    date copyrightMay, 2005
    date issued2005
    identifier issn1087-1357
    identifier otherJMSEFK-27864#333_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/132197
    description abstractHard turning, grinding, and honing are common finishing processes in today’s production. The machined subsurface undergoes severe deformation and possible microstructure changes in a small scale subsurface layer (<20 μm). Mechanical behavior of this shallow layer is critical for component performance such as fatigue and wear. Due to the small size of this region, mechanical behavior of this shallow layer is hard to measure using traditional material testing. With the nanoindentation method, mechanical behavior (nanohardness and modulus) at the microscale in subsurface was measured for AISI 52100 and AISI 1070 steel components machined by hard turning, grinding, and honing. The test results show that white layer increases nanohardness but decreases modulus of a turned surface. Nanohardness and modulus of the ground surface are slightly smaller than the honed one in the subsurface. However, grinding produces higher nanohardness and modulus in near-surface (<10 μm) than honing, while honing produces more uniform hardness and modulus in the near-surface and subsurface, and would improve component performance. Nanohardness and modulus of the machined near-surface are strongly influenced by strain hardening, residual stress, size-effect, and microstructure changes.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleMicroscale Mechanical Behavior of the Subsurface by Finishing Processes
    typeJournal Paper
    journal volume127
    journal issue2
    journal titleJournal of Manufacturing Science and Engineering
    identifier doi10.1115/1.1807853
    journal fristpage333
    journal lastpage338
    identifier eissn1528-8935
    keywordsFinishing
    keywordsMechanical behavior
    keywordsMicroscale devices
    keywordsNanoindentation
    keywordsGrinding
    keywordsStress
    keywordsWork hardening
    keywordsTurning
    keywordsSteel
    keywordsWear
    keywordsSize effect AND Fatigue
    treeJournal of Manufacturing Science and Engineering:;2005:;volume( 127 ):;issue: 002
    contenttypeFulltext
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