The stress corrosion cracking (SCC) behavior of 316L stainless steel (SS) forged to 0%, 12.6%, 21.4%, and 39.8% reduction in thickness was investigated at constant K in light water reactor environments. The yield strength, specimen orientation, and water chemistry were correlated with crack growth rate, and their dependencies are discussed. The crack growth rate (CGR) of 316L SS increased monotonously with yield strength irrespective of the specimen orientation or water chemistry. Higher CGRs were observed when cracks propagate along the plane parallel to forging plane than normal to forging plane. The effect of local deformation on the anisotropic cracking behavior for different orientations, crack paths and CGRs are also discussed.

在常数K下在轻水反应堆环境中研究了316L不锈钢（SS）锻造成厚度分别减少0％，12.6％，21.4％和39.8％时的应力腐蚀开裂（SCC）行为。将屈服强度，试样取向和水化学性质与裂纹扩展速率相关联，并讨论它们之间的依赖性。316L SS的裂纹扩展速率（CGR）随着屈服强度单调增加，而与试样方向或水化学性质无关。当裂纹沿平行于锻造平面的平面传播时，裂纹比平行于锻造平面的法线传播时更高。还讨论了局部变形对不同取向，裂纹路径和CGR的各向异性裂纹行为的影响。