摘要
采用慢应变速率拉伸实验（ＳＳＲＴ）、扫描电镜及电化学渗氢技术研究了Ｈ２Ｓ浓度、电位对１６Ｍｎ钢在Ｈ２Ｓ溶液中脆断敏感性的影响，结果表明：１６Ｍｎ钢在Ｈ２Ｓ溶液中的断裂是一种氢脆控制的断裂，随Ｈ２Ｓ浓度（Ｎ）增大，应力腐蚀断裂的机理从韧性转变为脆性；１６Ｍｎ钢片在Ｈ２Ｓ溶液中的稳态渗氢电流值ＩＨ和Ｈ２Ｓ浓度（Ｎ）满足ＩＨ＝８．５２５×Ｎ０．７２４９；ＩＨ受温度的影响主要表现在氢在１６Ｍｎ钢中的扩散系数上。综合实验结果可知，电化学渗氢方法是一种评价１６Ｍｎ钢脆断敏感性快速而实用的方法。
Abstract The effects of H\-2S concentration and potential on
brittleness cracking sensitivity of 16 Mn steel in H\-2S solution were studied by SSRT,SEM and
HTT.It showed that the brittleness cracking of 16 Mn steel in H\-2S solution is a kind of hydrogen
brittleness controlling crackings.The relationship between steady state hydrogen penetrating
current \%I\%\-H and H\-2S concentration satisfies \%I\%\-H=8.525 \%N\%\+\{0.7249\}.The
experimental results showed that the electrochemically penetrating of hydrogen is a practical
method for evaluation of brittleness cracking sensitivity of 16 Mn steel in H\-2S solution. \=
出处
《材料保护》
CAS
CSCD
北大核心
1998年第1期3-6,共4页
Materials Protection
