304奥氏体钢的高温高压氢腐蚀  

HYDROGEN ATTACK ON AUSTENITIC STEEL 304 UNDER HIGH TEMPERATURE AND HIGH PRESSURE

作　　者：李晓刚[1] 陈华[2] 姚治铭[2] 李劲[2] 柯伟[2] 

机构地区：[1]中国科学院金属腐蚀与防护研究所,讲师沈阳110015 [2]中国科学院金属腐蚀与防护研究所腐蚀科学开放实验室

出　　处：《金属学报》1993年第4期B169-B172,共4页Acta Metallurgica Sinica

摘　　要：定氢分析和扫描电镜观察证实在450℃和5MPa氢气中服役20000h的304奥氏体钢发生了氢蚀透射电镜分析表明,氢蚀原因是Cr_(23)C_6碳化物存在实验和热力学分析都表明。Hydrogen attack on 304 austenitic stainless steel in the service for 2×10~4 h at450℃ under 5 MPa was detected to result from the occurrence of Cr_(23)C_6. The methane bub-bles were formed preferentially along grain boundaries and twin boundaries, and some ofthem in grains. Experimental results and thermodynamical analysis indicated that the Cr-de-pleted region around bubbles is not necessary condition in growth stage of bubbles.

关 键 词：氢蚀 奥氏体钢 CH4气泡 贫Cr区 

分 类 号：TG142.25[一般工业技术—材料科学与工程]