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On the commensuration of plastic plowing at the microscale
Tribology International ( IF 6.2 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.triboint.2020.106477
Hanna Tsybenko , Wenzhen Xia , Gerhard Dehm , Steffen Brinckmann

Abstract Improving the wear properties requires an understanding of the mechanisms during the initial stages of wear. This paper focuses on the transition from static indentation to dynamic wear, i.e. the evolution from stationary to sliding contact. By using single micrometer-sized roughness peaks on copper, cementite and austenitic steel, we observe that the conservation of contact area, elastic recovery, and the front pile-up development are the dominant mechanisms. The elastic recovery leads to an additional contact area at the backside of the asperity. The influence of the crystallographic orientation was found to be negligible during the initial increase in wear depth but significant during the later stages. Moreover, the partial wear depth recovery is observed only in ductile materials.

中文翻译:

微尺度塑料耕作的相称性

摘要 提高磨损性能需要了解磨损初始阶段的机制。本文重点讨论从静态压痕到动态磨损的转变,即从静止接触到滑动接触的演变。通过在铜、渗碳体和奥氏体钢上使用单个微米级粗糙度峰,我们观察到接触面积守恒、弹性恢复和前端堆积发展是主要机制。弹性恢复导致粗糙背面的额外接触面积。发现晶体取向的影响在磨损深度的初始增加期间可以忽略不计,但在后期阶段显着。此外,仅在韧性材料中观察到部分磨损深度恢复。
更新日期:2020-11-01
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