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对同成分不同组织的试制耐磨管线钢进行磨粒磨损试验,并对磨损表面形貌进行扫描电镜观察并对该表层磨损失重进行分析。结果表明:加载载荷对于磨损结果的影响大于对磨损距离和磨粒尺寸的影响;当磨粒尺寸或载荷较小时,主要的磨损机制为微观切削:当磨粒尺寸或载荷较大时主要磨损机制为疲劳断裂,反复的塑性变形使材料疲劳脱落,造成磨损;材料亚表层组织的塑性变形随磨粒尺寸的增大而加重,材料损失也会加剧。
Abrasive wear test was carried out on the prototype wear-resistant pipeline steel with the same composition and the wear surface morphology was observed by scanning electron microscopy and the weight loss of the surface wear was analyzed. The results show that the influence of loading load on the wear results is greater than that on the wear distance and the grain size. When the grain size or load is small, the main wear mechanism is micro-cutting: the main wear mechanism when the grain size or load is larger For the fatigue fracture, repeated plastic deformation of the material fatigue off, resulting in wear and tear; Sub-surface material of the plastic deformation increases with the increase of abrasive size, material loss will increase.