摘要
在1 000、1 050、1 100℃下对试样进行固溶处理,再在650℃下进行敏化处理,利用EPR法确定热处理工艺对晶间腐蚀的影响。结果表明:当保温时间较短时,随着固溶温度的升高,再活化率R值和电量比Qr/Qa减小;当保温时间过长时,R值和电量比Qr/Qa增大。草酸浸蚀实验的结论与EPR实验相一致。在1 050℃下保温20min能够得到较好的耐晶间腐蚀性能。
The solution treatment of high nitrogen stainless steels were implemented at 1 000℃,1 050℃ and1 100℃,respectively,including their post-sensitization treatment at 650℃ and making use of EPR method to analyze the effect of heating process technology on intergranular corrosion resistance. The results show that,when the holding time becomes shorter,with gradual increasing of the solution treatment temperature,both R value（ reactivation rate） and electricity ratio（ Qr/Qa） decreases; when the holding time becomes too long,R value and electricity ratio（ Qr/Qa） increases sharply. In oxalic acid solution etching experiment,the conclusion is consistent with EPR experiment. Samples＇ 20 min holding time at 1 050℃ has better intergranular corrosion resistance.
作者
吴戆
张旭昀
郑冰洁
王文泉
王勇
WU Zhuang;ZHANG Xu-yun;ZHENG Bing-jie;WANG Wen-quan;WANG Yong(School of Mechanical Science and Engineering,Northeast Petroleum University;School of Materials Science and Engineering,Harbin Institute of Technology)
出处
《化工机械》
CAS
2018年第4期434-437,共4页
Chemical Engineering & Machinery
基金
国家自然科学基金项目(51401051)
关键词
316LN
晶间腐蚀
固溶处理
EPR法
草酸浸蚀实验
固溶温度
保温时间
316LN
intergranular corrosion
solution treatment
EPtl method
oxalic acid solution etching experiment
solution temperature
holding time
