【摘 要】
：
一、前言残余应力是指当机器零件没有受到外力和温度的作用时,存在于零件内部并且保持相互平衡的“内应力”。任何一个零件,由于加工制造的原因,其内部都存在着残余应力,只
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一、前言残余应力是指当机器零件没有受到外力和温度的作用时,存在于零件内部并且保持相互平衡的“内应力”。任何一个零件,由于加工制造的原因,其内部都存在着残余应力,只是数量的大小及其分布情况不同而已。表面残余应力的存在对疲劳强度、尺寸稳定性、抗腐蚀能力都有很大的影响。以疲劳强度而言,当表面层具有残余拉应力时,极限疲劳强度大大降
I. Preface Residual stress refers to the “internal stress” that exists inside the parts and keeps the balance when the parts of the machine are not exposed to external force and temperature. Any one part, due to manufacturing reasons, there are residual stresses within its own, but the number of the size and distribution of different. The existence of residual stress on the surface fatigue strength, dimensional stability, corrosion resistance has a great impact. In terms of fatigue strength, when the surface layer has residual tensile stress, the ultimate fatigue strength greatly reduced
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