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针对AM60B合金在环境温度25～200℃、载荷12.5～300N的条件下进行干摩擦磨损实验。结果表明:随着载荷的增大,磨损率增加;从轻微磨损到严重磨损的转变的临界载荷分别为25℃时275N,100℃时150N,200℃时75N。在低载荷(<50N)下,200℃下的磨损率低于25℃和100℃的。在轻微磨损阶段,磨损机制为磨粒磨损、氧化磨损和剥层磨损。当轻微磨损到严重磨损的转变开始时,剥层磨损发挥主要作用,剥层磨损是从基体内部发生的剥落。随后,塑性挤出磨损作为严重磨损出现,同时伴随着从轻微磨损到严重磨损的转变。厚的、硬的摩擦层通过限制磨面的塑性变形来阻碍从轻微磨损到严重磨损的转变。
Aiming at AM60B alloy, dry friction and wear tests were carried out under the conditions of ambient temperature of 25 ~ 200 ℃ and load of 12.5 ~ 300N. The results show that the wear rate increases with the increase of load, and the critical loads from slight wear to serious wear are 275N at 25 ℃, 150N at 100 ℃ and 75N at 200 ℃ respectively. At low loads (<50 N), wear rates at 200 ° C are less than 25 ° C and 100 ° C. In the slight wear stage, the wear mechanism is abrasive wear, oxidative wear and peeling wear. Peeling wear plays a major role when the transition from slight wear to severe wear begins, and peel wear is flaking from inside the substrate. Subsequently, plastic extrusion wear occurred as severe wear accompanied by a shift from slight wear to severe wear. A thick, hard friction layer hinder the transition from slight wear to severe wear by limiting the plastic deformation of the wear face.