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采用快速磨损试验机进行耐磨性试验 ,并通过微区成分分析、图像分析、光学显微镜及扫描电镜分析探讨了Ni ,Mn对Al Si Cu Mg系合金组织及二体磨损条件下磨损失效机制的影响。在二体干摩擦条件下 ,Al Si Cu Mg系合金的磨损失效机制为犁削磨损和表层剥落磨损 ,添加合金元素Ni后 ,组织中出现Al34 Cu2 8Ni38化合物 ,磨损失效以表层剥落为主 ;添加合金元素Mn后 ,组织中又出现Al56Si4 Cu9Ni2 6Mn5化合物 ,磨损失效以犁削磨损为主。
Wear resistance test was carried out by using a rapid wear tester. The mechanism of wear failure of Ni and Mn on Al Si Cu Mg alloy system and wear condition was discussed by micro-composition analysis, image analysis, optical microscopy and scanning electron microscopy. influences. Under the condition of two-body dry friction, the wear failure mechanism of Al Si Cu Mg alloy is plow abrasion and surface flaking wear. After addition of alloying element Ni, the Al34 Cu2 8Ni38 compound appears in the microstructure, After the alloying element Mn, the Al56Si4Cu9Ni2 6Mn5 compound appeared again in the microstructure, and the wear failure was dominated by the plow abrasion.