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.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第4期B169-B172,共4页
Acta Metallurgica Sinica
关键词
氢蚀
奥氏体钢
CH4气泡
贫Cr区
hydrogen attack
austenitic stainless steel
methane bubbles
Cr-depleted region
