Calculation of diagrams of components of residual stress tensor arising in the surface layer of a tribomaterial under sliding friction is used to formulate ideas about the role of the medium in creating a plasticizing and strengthening triboeffect. The characteristics of the structural state of the surface layers of brasses, aluminum and tin bronzes during their friction against steel in surface-active lubricants are presented. The conditions for achieving minimum power losses to friction and wear are determined. The role of local diffusion phenomena in quasi-spinodal phase transitions observed in surface micro-volumes of copper alloys during their contact deformation is revealed. It is shown that among industrial copper alloys, brass of the L90 type, aluminum bronzes BrA5, BrA7, and tin bronzes BrOF4-0.25, BrOF6,5-0,15 have the greatest wear resistance in surface-active lubricants. Examples of implementation of the phenomenon of selective transfer in friction pairs are given. Recommendations are developed for its use in friction units of machines and devices.

计算滑动摩擦下摩擦材料表面层中产生的残余应力张量分量图，用于阐述介质在产生塑化和强化摩擦效应中的作用。介绍了黄铜、铝和锡青铜在表面活性润滑剂中与钢摩擦时表面层的结构状态特征。确定了实现最小摩擦和磨损功率损失的条件。揭示了在铜合金接触变形过程中在表面微体积中观察到的准旋节线相变中局部扩散现象的作用。结果表明，在工业铜合金中，表面活性润滑剂中L90型黄铜、铝青铜BrA5、BrA7和锡青铜BrOF4-0.25、BrOF6,5-0,15的耐磨性最好。给出了摩擦副中选择性转移现象的实现示例。针对其在机器和设备的摩擦单元中的使用制定了建议。