2205双相不锈钢在大牛地气田的耐蚀性能研究  

Research on Corrosion Resistance of 2205 Duplex Stainless Steel in Daniudi Gas Field

作　　者：王明军[1,2] 李春福[1] 王垚[1] 宋开红[1] 文平[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中石化华北公司,河南郑州450000

出　　处：《热加工工艺》2017年第16期64-67,共4页Hot Working Technology

基　　金：国家863高新技术研究发展计划项目(2006AA06A105);西南石油大学油气藏地质及开发工程国家重点实验室基金资助项目(PLN0609)

摘　　要：采用SSRT进行不同速率的试验,对2205双相不锈钢在模拟大牛地气田环境下的耐应力腐蚀性能进行研究。计算了腐蚀敏感性,利用扫描电镜对断口形貌进行观察。结果表明:2205双相不锈钢应力敏感系数分布在安全区内。断口形貌特征为韧窝,其变大变浅,但仍旧为穿晶韧性断裂,所以2205双相不锈钢在大牛地气田可安全应用。The stress corrosion resistance of 2205 duplex stainless steels in simulate corrosion environment of Daniudi gas fields was studied by slow strain rate testing（SSRT） at different strain rates. The stress corrosion cracking（SCC）susceptibility was calculated, the morphology of fracture was observed by scanning electron microscope（SEM）. The results show that the steel sensitive coefficient of 2205 duplex stainless steels is within the safe range. The feature of fracture morphology is dimple, and the dimple tends to be shallower and bigger, but the sample is remains transgranular toughness fractures. So 2205 duplex stainless steels could be safely used in Daniudi gas fields.

关 键 词：2205双相不锈钢 应力腐蚀 韧性断裂 

分 类 号：TG113[金属学及工艺—物理冶金]