论文标题
在滑动触点下可塑性引起的微观结构变化的起源
On the Origin of Plasticity-Induced Microstructure Change under Sliding Contacts
论文作者
论文摘要
进行离散的位错可塑性（DDP）计算以研究在滑动载荷条件下通过刚性正弦的垂体接触的单晶体的响应，以寻找位错结构中微观结构变化的原因。机械驱动器被确定为晶格旋转的发展和在地下中存储的能量，这可以与最近的摩擦学实验观测定量相关。从DDP计算中获得的表面滑动启动和底物永久变形的地图，用于不同的接触尺寸和正常载荷，这表明了为各种摩擦负载最佳调整界面和微结构材料特性的方法。
Discrete dislocation plasticity (DDP) calculations are carried out to investigate the response of a single crystal contacted by a rigid sinusoidal asperity under sliding loading conditions to look for causes of microstructure change in the dislocation structure. The mechanistic driver is identified as the development of lattice rotations and stored energy in the subsurface, which can be quantitatively correlated to recent tribological experimental observations. Maps of surface slip initiation and substrate permanent deformation obtained from DDP calculations for varying contact size and normal load suggest ways of optimally tailoring the interface and microstructural material properties for various frictional loads.
