推导了激光相变硬化层的残余应力公式，并对实验结果进行了分析讨论。
The formula of residual stress in laser transformation hardened case is inferred, and the experimental results are discussed.
实测了激光相变硬化区的宽度和深度及残余应力分布。
The width and depth of laser transformation hardening zone and residual stress distribution were measured experimentally.
结果表明，激光相变硬化层中的残余压应力是普遍存在的现象。
The experimental results show that the residual compressive stresses existed in the laser hardened case are universal phenomena.
研究表明在完全循环加载过程中，由于残余应变的存在，马氏体相变应力随循环增加而减小。
The research results show martensite transformation stress decreases with an increase in cycle due to the residual strain during full cyclic loading.
渗层中的相变次序和残余奥氏体的存在对残余应力分布影响较大。
Phase transformation sequence in diffusion layer and the existence of residual austenite have great effect on the distribution of residual stress.
通过分析，薄膜内残余应力可认为是相变系数与弹性模量共同作用的结果。
Analysing the result, we know that the residual stress of the films is affected by both the coefficient of phase transformation and elasticity modulus of films.
通过焊缝金属相变温度和残余应力测试以及焊接接头疲劳强度试验，分析了焊缝金属相变温度对焊接残余应力和焊接接头疲劳强度的影响规律。
The effect of transformation temperature of weld metal on the residual stresses and the fatigue strength of welded joints is analyzed based on their test.
消除部分热应力和相变应力，残余应力也有所降低。
The part of thermal stress is relieved and the residual stress of phase changing is descend.
消除部分热应力和相变应力，残余应力也有所降低。
The part of thermal stress is relieved and the residual stress of phase changing is descend.
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