This work studies the relationship between the early stage of stress corrosion cracking (SCC) mechanism and the crystallographic texture of API 5L X52 steel for sour service in a near-neutral pH solution. Experimental evidence of the SCC initiation of X52 steel for sour service was obtained using SEM and EBSD techniques. The results show that the crack initiation mechanism behaves like a synergistic combination of chemical attack and stress concentration at pits, being the last one the driving force to crack transition. In addition, it was found from both X-ray macrotexture and EBSD microtexture measurements that the cracks initiation process depends strongly on the material’s texture characteristics and the presence of the texture fiber {0 0 1}//ND in X52 steel for sour service can increase its susceptibility to SCC. In a quantitative manner, the influence of the crystallographic texture in the SCC mechanism was explained through the relationship between the initiation of SCC cracks and the predictions of the anisotropy of Young’s modulus using EBSD measurements.

这项工作研究了应力腐蚀开裂（SCC）的早期机理与API 5L X52钢在近中性pH溶液中的酸性应用之间的晶体织构之间的关系。使用SEM和EBSD技术获得了X52钢在酸性条件下SCC引发的实验证据。结果表明，裂纹萌生机制的行为类似于化学侵蚀和坑内应力集中的协同组合，是裂纹扩展的最后一个驱动力。此外，从X射线宏观织构和EBSD微观织构测量中发现，裂纹的萌生过程在很大程度上取决于材料的织构特性，并且X52钢中用于酸化的织构纤维{0 0 1} // ND的存在可以增加其对SCC的敏感性。在数量上，