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首页> 外文会议>International conference on industrial engineering >Study on Surface Layers of Aluminum and Titanium Alloys and Analysis of their Scuff Resistance
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Study on Surface Layers of Aluminum and Titanium Alloys and Analysis of their Scuff Resistance

机译：铝和钛合金表面层的研究及其耐擦伤性分析

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To reduce the risk of scoring copper or zinc coatings were applied to the samples in molten salts at a temperature of 350-500°C. Using ion sputtering and Auger electron spectroscopy the depth of the surface layers and the grain size in the coating were determined. Samples were plates 0.5-0.7 mm thick made of titanium and aluminum alloys. For copper-coated alloys a coating zone up to 10 μm and a diffuse zone up to 6 μm which is intermediate between the coating and the substrate can be distinguished in the surface layers. For zinc-coated aluminum alloys there is one zone of 5-7 μm which is an aluminum-zinc alloy of variable composition across depth. Thus, a soft metal formed on the surface of the titanium and aluminum alloys when processed in the salt melt is connected to the base metal with metallic bonds. Moreover, the higher the temperature and the longer the holding time in the salt melt, the thicker the coating is. While investigating the score resistance a dependence of the friction moment change on the path travelled to a score appearance was obtained. It has been established that the score resistance of the titanium and aluminum alloys is directly dependent on the inhomogeneity factor which is sharply increased when there is a softer (compared with the base metal) coating on the surface of the metal processed. Experimental stamping-drawing of cups made of the titanium alloy workpieces preliminary copper-coated in the salt melt was carried out. The production cycle was significantly reduced, and the surface quality of the products after the coating removal was high, the scoring was not observed. Thus, the use of soft (compared with the base metal) metal coatings applied in salt melts is promising for titanium and aluminum alloys.
机译：为了降低划痕的风险，在350-500°C的温度下以熔融盐的形式在样品上涂了铜或锌涂层。使用离子溅射和俄歇电子能谱确定涂层的表面层深度和晶粒尺寸。样品是由钛和铝合金制成的0.5-0.7mm厚的板。对于镀铜合金，可以在表面层中区分出最大为10μm的涂层区域和最大为6μm的扩散区域，该区域位于涂层和基材之间。对于镀锌铝合金，存在一个5-7μm的区域，该区域是在整个深度范围内具有可变成分的铝锌合金。因此，当在盐熔体中加工时，在钛和铝合金的表面上形成的软金属通过金属键与贱金属连接。而且，温度越高，盐熔体中的保持时间越长，涂层越厚。在研究刻痕阻力时，获得了摩擦力矩变化对刻痕出现的路径的依赖性。已经确定，钛和铝合金的耐划痕性直接取决于不均匀性因素，当在所加工金属的表面上有较软的涂层（与贱金属相比）时，不均匀性因素会急剧增加。对由钛合金工件制成的杯子进行了实验冲压，该杯子预先在盐熔体中镀了铜。生产周期显着缩短，去除涂层后产品的表面质量高，未观察到划痕。因此，对于钛和铝合金，在盐熔体中使用柔软的（与贱金属相比）金属涂层是有希望的。

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