The influence of stress ratio, loading frequency and additional stress on TGSCC initiation of X70 pipeline steel was mainly studied and ESEM observations of corrosion sample surfaces were carried out.

• 研究了应力比、加载频率和外加横向载荷等力学因素对X70管线钢在新疆土壤溶液中穿晶应力腐蚀开裂裂纹萌生的影响，并结合环境扫描电镜对腐蚀样品表面进行观察。