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Mechanical Properties and Wear Behavior of the White Layer

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Abstract

The white layer (WL) generally refers to an untempered martensite layer generated by severe sliding conditions, such as cutting, drilling, grinding, milling, and electron-discharge machining. Numerous tribologists have investigated the effect of the WL on wear behavior, but this phenomenon is not yet clearly understood because no attempt has been made to correlate the wear mechanism of the WL with its wear behavior. It is necessary to investigate the effects of the WL on wear comprehensively. Therefore, elasto-plastic properties, wear resistance, and wear mechanism of WL were studied with nanoindentation and wear tests. The results of this study show that the elastic moduli, yield strength, and hardness of the WL increased by approximately 170, 390, and 180%, respectively. Thus, it was found that the WL had distinct properties with respect to the substrate of AISI 52100 steel. It is possible that the increased surface hardness is an advantage in terms of wear resistance. However, the advantage diminishes, and the WL is subject to wear when delamination dominates the wear mechanism.

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Authors and Affiliations

  1. School of Mechanical Engineering, Sungkyunkwan University, Suwon, KyungGi-Do, 440-746, South Korea

    Dae-Hyun Cho & Young-Ze Lee

  2. Department of Mechanical Engineering, Texas Tech University, 7th and Boston, Lubbock, TX, 79409, USA

    Sung-Ae Lee

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  1. Dae-Hyun Cho
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  2. Sung-Ae Lee
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  3. Young-Ze Lee
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Correspondence to Young-Ze Lee.

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Cho, DH., Lee, SA. & Lee, YZ. Mechanical Properties and Wear Behavior of the White Layer. Tribol Lett 45, 123–129 (2012). https://doi.org/10.1007/s11249-011-9869-4

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  • DOI: https://doi.org/10.1007/s11249-011-9869-4

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