L415/N08825复合管硫化物应力腐蚀开裂及失重腐蚀研究  

Study on Sulfide Stress Corrosion Cracking and Weight Loss Corrosion of L415/N08825 Clad Pipe

作　　者：李良均[1] 崔成武[2] 蒋勇[3] 徐明 

机构地区：[1]四川科宏石油天然气工程有限公司,成都610213 [2]西南石油大学材料科学与工程学院,成都610500 [3]四川大西洋焊接材料股份有限公司,四川自贡643010 [4]中国五冶集团公司钢结构工程分公司,成都610000

出　　处：《焊管》2017年第2期6-12,19,共8页Welded Pipe and Tube

摘　　要：为了研究复合管的耐蚀性能,对L415/N08825复合管母材及焊缝在H_2S/CO_2环境中,进行了抗硫化物应力腐蚀开裂(SSCC)试验和不同压力下的高温高压失重腐蚀试验研究。720 h硫化物应力腐蚀开裂(SSCC)试验结果显示,3个试样均未发生断裂,在10倍放大镜下观察所有试样表面均未发现裂纹;不同压力失重腐蚀试验结果显示,L415/N08825复合管复层母材和焊缝试样的平均腐蚀速率较小,试样表面均未观察到明显的腐蚀痕迹。研究结果表明,试验用L415/N08825复合管母材与焊缝耐蚀性良好。In order to study the corrosion resistance of the clad pipe, it carried out the sulfide stress corrosion cracking （SSCC）test for IA15/N08825 clad pipe base metal and weld under H2S/CO2 environment, and conducted high temperature and high pressure weightlessness corrosion test research under different pressure. 720 h SSCC test resuh indicated that no fracture appeared in three samples, all specimens were observed under the 10 times magnifying glass, no surface cracks be founded; test results of weightlessness corrosion under different pressure indicated that the average corrosion rate of IA15/ N08825 clad pipe base metal and weld was small, obvious corrosion traces were not be observed. The research results showed that the corrosion resistance performance of experimental IA15/N08825 clad pipe base metal and weld is good.

关 键 词：焊缝 L415／N08825 复合管 SSCC 失重腐蚀 

分 类 号：TG113.232[金属学及工艺—物理冶金]