This research examines the effect of wear testing parameters on the wear behavior of AZ91 alloy prepared through rotary-die equal channel angular pressing (RD-ECAP). An AZ91 alloy was processed by RD-ECAP method at 573 K for up to 16 passes to reduce the grain size to ~ 5 µm. The properties of the alloys produced by RD-ECAP were compared with the as-received alloy. In order to measure the wear behavior of RD-ECAP manufactured alloy with the as-received alloy, wear tests were performed using ball-on-disk apparatus with specific loading conditions and varying sliding speeds. Surface analysis was used to show the presence of delamination, wear debris and plowing using scanning electron microscopes (SEM). The findings showed that, due to the grain refinement and homogeneity of the second phase distribution, RD-ECAP processed magnesium alloys possess increased wear resistance compared to the initial condition (unprocessed alloy), which makes them suitable for applications in aerospace, automotive and structural industries. Besides, the weight loss reduced with the increase of RD-ECAP pass numbers. Furthermore, increasing in applied load had a more dramatic effect on wear resistance compared to increasing sliding speed and sliding time.

本研究研究了磨损测试参数对通过旋转模等通道角挤压（RD-ECAP）制备的AZ91合金的磨损行为的影响。通过RD-ECAP方法在573 K下对AZ91合金进行了多达16道次的处理，以将晶粒尺寸减小至〜5 µm。将RD-ECAP生产的合金的性能与原样进行了比较。为了测量RD-ECAP制得的合金与收到的合金的磨损性能，使用具有特定负载条件和变化的滑动速度的圆盘滚珠设备进行了磨损测试。使用扫描电子显微镜（SEM），通过表面分析来显示分层，磨损碎屑和耕作的存在。研究结果表明，由于晶粒细化和第二相分布的均匀性，与初始条件（未经处理的合金）相比，经RD-ECAP处理的镁合金具有更高的耐磨性，这使其适用于航空航天，汽车和结构工业。此外，随着RD-ECAP通过次数的增加，体重减轻有所减少。此外，与增加滑动速度和滑动时间相比，增加外加载荷对耐磨性的影响更大。