ABSTRACT The effect of Zn–40Al–2Cu–xSi (x = 4 and 8 wt-%) tungsten inert gas (TIG) surfaced coatings and multi-pass friction stir processing (FSP) on the tribological properties of Zn–40Al–2Cu alloy was studied. The coatings had a well-modified microstructure comprising of finely dispersed primary Si particles (SiP). These particles act as in-situ reinforcements, improving coating resistance against the friction-induced strains applied during sliding wear. The results of dry sliding wear showed that, at the applied pressures of 0.25, 0.5, and 0.75 MPa, the wear resistance of 4-pass FSPed coatings containing 4 wt-% Si is higher than that of the base alloy by 27, 47, and 57%, respectively. This can be attributed to the substrate strengthening and formation of compacted tribolayers on the surface of FSPed samples.

中文翻译：

---

Zn-40Al-2Cu合金上富硅TIG沉积涂层的摩擦学

摘要 Zn-40Al-2Cu-xSi (x = 4 and 8 wt-%) 钨惰性气体 (TIG) 表面涂层和多道搅拌摩擦加工 (FSP) 对 Zn-40Al-2Cu 合金摩擦学性能的影响被研究了。涂层具有良好改性的微观结构，包括精细分散的初级硅颗粒 (SiP)。这些颗粒充当原位增强剂，提高涂层对滑动磨损期间施加的摩擦引起的应变的抵抗力。干滑动磨损结果表明，在 0.25、0.5 和 0.75 MPa 的施加压力下，含 4 wt-% Si 的 4 道 FSPed 涂层的耐磨性比基体合金高 27、47、和 57%，分别。这可以归因于基底强化和在 FSP 样品表面上形成压实的摩擦层。