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利用湿砂橡胶轮磨损试验机对同成分不同组织的三种管线钢进行了浆料磨损实验,随后对磨损后的试样表面进行扫描电镜观察和三维白光干涉分析,研究组织类型影响耐磨性的原因及磨损的微观机理.结果表明:当磨损机理以微观犁沟和微观疲劳为主时,复相组织中共存的两相硬度差别越大,磨痕的微观变形越不易协调,磨损质量损失越明显;当整体力学性能接近时,粒状贝氏体+针状铁素体的复相组织最为耐磨,粒状贝氏体+多边形铁素体复相组织次之,板条贝氏体+多边形铁素体复相组织耐磨性最差.
Slurry wear tests were carried out on three kinds of pipeline steels with the same composition and different components by using a wet-sand rubber wheel abrasion testing machine. Then the surface of the worn samples was observed by scanning electron microscopy and three-dimensional white light interference analysis to study the effects of the types of the tissues on the wear resistance And the microscopic mechanism of the wear.The results show that when the wear mechanism is dominated by micro-furrows and microscopic fatigue, the greater the difference of the two-phase hardness coexisting in the complex phase, the less the microscopic deformation of the wear scar is easy to be coordinated and the loss of wear quality The more obvious; when the overall mechanical properties close, granular bainite + acicular ferrite complex is the most wear-resistant, granular bainite + polygonal ferrite complex followed by lath bainite + polygons Ferrite duplex wear the worst.