基于微塑性变形的振动时效激振力的选择

The choice of dynamical stress for VSR based on micro plastic deformation

振动时效使残余应力峰值降低并得到均化的主要原因是材料内部微塑性变形的局部性。本文分析了静载荷及循环载荷下的微塑性变形行为,认为振动时效动应力的选择应以材料的疲劳极限作为依据。

Vibratory stress relief (VSR) can reduce the residual stress in component. The mainly cause is micro plastic deformation of local region. Analyzing the micro plastic deformation of metal material under static load and cyclic stress, The scientific basis for choice dynamical stress of VSR is provide.