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首页> 外文期刊>Journal of Materials Research >Variations in strain affect friction and microstructure evolution in copper under a reciprocating tribological load
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Variations in strain affect friction and microstructure evolution in copper under a reciprocating tribological load

机译：在往复摩擦载体下应变的变化影响铜的摩擦和微观结构演化

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摘要

The microstructure of the materials constituting a metallic frictional contact strongly influences tribological performance. Being able to tailor friction and wear is challenging due to the complex microstructure evolution associated with tribological loading. Here, we investigate the effect of the strain distribution on these processes. High-purity copper plates were morphologically surface textured with two parallel rectangles-re-ferred to as membranes-over the entire sample length by micro-milling. By keeping the width of these membranes constant and only varying their height, reciprocating tribological loading against sapphire discs resulted in different elastic and plastic strains. Finite element simulations were carried out to evaluate the strain distribution in the membranes. It was found that the maximum elastic strain increases with decreasing membrane stiffness. The coefficient of friction decreases with increasing membrane aspect ratio. By analyzing the microstructure and local crystallographic orientation, we found that both show less change with decreasing membrane stiffness.
机译：构成金属摩擦接触的材料的微观结构强烈影响摩擦学性能。由于与摩擦学载荷相关的复杂的微观结构演进，能够定制摩擦和磨损是挑战。在这里，我们研究了应变分布对这些过程的影响。高纯度铜板在形态学上织地用两个平行的矩形 - 通过微铣削在整个样品长度上作为膜 - 在整个样品长度上。通过将这些膜的宽度保持恒定并且仅改变它们的高度，往复摩擦载体往复式载体导致不同的弹性和塑料菌株。进行有限元模拟以评估膜中的应变分布。发现最大弹性应变随着膜刚度的降低而增加。摩擦系数随着膜纵横比的增加而降低。通过分析微观结构和局部结晶取向，我们发现两者都显示出较少的变化随着膜刚度的降低。

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  • 来源
    《Journal of Materials Research》 |2021年第4期|970-981|共12页
  • 作者

    Sarah Becker; Katrin Schulz; Dennis Scherhaufer; Peter Gumbsch; Christian Greiner;

  • 作者单位

    Institute for Applied Materials (IAM) Karlsruhe Institute of Technology (KIT) Kaiserstrasse 12 76131 Karlsruhe Germany KIT IAM-CMS MikroTribologie Centrum (μTC) Strasse am Forum 5 76131 Karlsruhe Germany;

    Institute for Applied Materials (IAM) Karlsruhe Institute of Technology (KIT) Kaiserstrasse 12 76131 Karlsruhe Germany Institute of Applied Research (IAF) Karlsruhe University of Applied Sciences Moltkestrass 30 76133 Karlsruhe Germany;

    Institute for Micro Process Engineering (IMVT) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Ptatz 1 76344 Eggenstein-Leopoldshafen Germany;

    Institute for Applied Materials (IAM) Karlsruhe Institute of Technology (KIT) Kaiserstrasse 12 76131 Karlsruhe Germany Fraunhofer Institute for Mechanics of Materials (IWM) Woehlerstrasse 11 79108 Freiburg Germany;

    Institute for Applied Materials (IAM) Karlsruhe Institute of Technology (KIT) Kaiserstrasse 12 76131 Karlsruhe Germany KIT IAM-CMS MikroTribologie Centrum (μTC) Strasse am Forum 5 76131 Karlsruhe Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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