It is also found that the value of tensile strength and surface residual compressive stress is linear correlation.

抗拉强度与表面残余压应力线性相关。

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The analysis of mechanical model shows that the fracture toughness is improved by residual compressive stress of substrate surface, which resists the tensile deformation of substrate.

力学模型分析表明，基体残余压应力以抵抗基体拉伸变形的方式提高了铬层的断裂韧性；

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Compressive residual stress fields in the surface region of small specimens are determined.

测定了小试样表面层的残余压应力场。

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