摘要
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。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 microcosmic plastic deformation of local region. It analyzes this type of deformation in metal material under static and cyclic load, provides the scientific basis for choice dynamical stress of VSR.
基金
陕西省教育厅专项计划资助项目(0 1JK1 64)
