Fretting wear behaviors of Inconel 600 and 690 plates against 304 stainless steel ball were investigated in pure water. The results indicated that Inconel 600 exhibited more excellent wear resistance than Inconel 690 as a fewer fatigue cracks were formed for its lower chromium. It could be explained as follows. Firstly, the material loss was mainly caused by fatigue cracks (delamination wear). Secondly, the fatigue cracks could be nucleated and propagated at the interface of Ni-rich zone/Cr-rich oxides zone in the tribological transformed structure, which was a special structure formed during fretting wear. Finally, the increasing chromium content would increase the area of Cr-rich oxides zone and eventually promote the formation of fatigue cracks.

在纯水中研究了 Inconel 600 和 690 板对 304 不锈钢球的微动磨损行为。结果表明，Inconel 600 表现出比 Inconel 690 更优异的耐磨性，因为其较低的铬形成的疲劳裂纹更少。可以解释如下。首先，材料损失主要是由疲劳裂纹（分层磨损）引起的。其次，疲劳裂纹可以在摩擦转变结构中的富镍区/富铬氧化物区的界面处形核和扩展，这是微动磨损过程中形成的一种特殊结构。最后，增加铬含量会增加富铬氧化物区的面积，最终促进疲劳裂纹的形成。