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首页> 外文期刊>Applied Surface Science >Surface roughness and friction coefficient in peened friction stir welded 2195 aluminum alloy
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Surface roughness and friction coefficient in peened friction stir welded 2195 aluminum alloy

机译：强化搅拌摩擦焊接2195铝合金的表面粗糙度和摩擦系数。

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摘要

The tribological properties of friction stir welded 2195 aluminum alloy joints were investigated for several laser- and shot-peened specimens. The first portion of this study assessed the surface roughness changes at different regions of the weld resulting from the various peening processes and included an atomic force microscopy (AFM) study to reveal fine structures. The second portion investigated the friction characteristics for various conditions when slid against a 440C ball slider. Shot peening resulted in significant surface roughness when compared to the unpeened and laser-peened samples. The initial friction for all types of specimens was highly variable. However, long-term friction was shown to be lowest for samples with no peening treatment. Laser peening caused the friction to increase slightly. The shot peening process on the other hand resulted in an increase of the long-term friction effects on both sides of the weld.
机译：研究了几种激光和喷丸处理试样的搅拌摩擦焊接2195铝合金接头的摩擦学性能。本研究的第一部分评估了由于各种喷丸处理而导致的焊缝不同区域表面粗糙度的变化，并包括了原子力显微镜（AFM）研究以揭示精细结构。第二部分研究了在440C球形滑块上滑动时各种条件下的摩擦特性。与未喷丸和激光喷丸的样品相比，喷丸处理会导致明显的表面粗糙度。所有类型样品的初始摩擦力变化很大。然而，对于未经喷丸处理的样品，长期摩擦被证明是最低的。激光喷丸使摩擦力略有增加。另一方面，喷丸处理增加了焊缝两侧的长期摩擦效果。

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