安徽工程大学学报2025，Vol.40Issue(1)：58-63,6.
结构取向对超细晶层状结构304L不锈钢抗点蚀性能的影响
Effect of Structural Orientation on the Pitting Corrosion Resistance of Ultrafine-lamella-grained 304L Stainless Steel
摘要
Abstract
The ultrafine-lamella-grained 304L stainless steel sheet was prepared by a multi-directional hot forging technique.The pitting corrosion behavior of the normal plane and transverse plane of the ultrafine-lamella-grained 304L stainless steel was studied by using a traditional three-electrode cell.The morphologies of the corrosion pits were characterized by using a three-dimensional contour profiler and SEM,which revealed the influence of the structural orientation on the pitting behavior of the ultrafine-lamella-grained 304L stainless steel in a 3.5 wt%NaCl solution.The experimental results showed that the pitting potential,corrosion potential,and corrosion current of the transverse plane of ultrafine-lamella-grained 304L stainless steel sheet are 293 mV,-117 mV and 1.0×10-7 A/cm2,respectively.This indicated an enhanced pitting corrosion resistance for the transverse plane of the ultrafine-lamella-grained 304L stainless steel,which was ascribed to the increase of the diffusion rate of Cr by the high-density grain boundaries.关键词
多向热锻/304L不锈钢/超细晶层状结构/结构取向/点蚀机制Key words
multi-directional hot forging/304L stainless steel/ultrafine-lamella-grained structure/structural orientation/pitting mechanism分类
金属材料引用本文复制引用
徐祖缘,李建生,王晓震,秦文波,周新宇,利助民,姜伟,王刚..结构取向对超细晶层状结构304L不锈钢抗点蚀性能的影响[J].安徽工程大学学报,2025,40(1):58-63,6.基金项目
国家自然科学基金项目(42202343) （42202343）
高性能有色金属材料安徽省重点实验室开放基金(YSJS-2023-01) （YSJS-2023-01）
大学生创新创业训练计划(202310363185) （202310363185）
