慢应变拉伸法模拟含氢储气库管材的应力腐蚀试验研究  

Study on SSC Test to Pipe for Hydrogen-containing Gas Storage Service with SSRT Simulation Method

作　　者：丁磊[1] 姚勇[1] 张志远[1] 窦志超[1] 

机构地区：[1]天津钢管集团股份有限公司,天津300301

出　　处：《钢管》2017年第5期18-24,共7页Steel Pipe

摘　　要：采用慢应变速率拉伸法,通过扫描电镜、能谱分析等手段,分析不同温度和干/湿气环境(通入H_2和CO_2混合气体)下HP13Cr、13Cr、3Cr的氢脆敏感性。结果显示:干气环境下,温度对这3种材质氢脆敏感性的影响较小;120℃干气环境中的氢脆系数排序为HP13Cr∧13Cr∧3Cr;湿气环境中,由于Cl^-和CO_2水溶液的综合作用,13Cr氢脆系数增大,但不同试验条件下的氢脆系数均未大于25%,可以认为其并无氢脆敏感性倾向。针对模拟的含氢储气库试验条件,推荐使用13Cr系列材质。Analyzed is the hydrogen-embrittlement sensitivity of the HPI3Cr, 13Cr and 3Cr pipes presented under the conditions of different temperatures and dry/humid gas （HE and CO2 combination） environment by means of the SSRT method, and the scanning electron microscope （SEM） and the energy dispersive X-ray spectrometer（EDS）. The testing result reveals the facts as follows. In the dry gas environment, the temperature produces little effect on the sensitivities of the said three different pipes, while in the 120 ~C dry gas environment, the sequence of hydrogen- embrittlement sensitivity coefficients of the said pipes is HP13Cr〈13Cr〈3Cr; And in the humid gas enviromnent, due to the combined effects by the C1- concentration and the CO2 water solution, the hydrogen embrittlement coeffi- cient of the 13Cr pipe is increased, but in case of any testing conditions, none of the said coefficients has got higher than 25%, which can be interpreted as no trend of hydrogen-embrittlement exists. Based on the simulated testing conditions of the hydrogen-contalning gas storage, the 13Cr series tubular material is recommended for actual applications.

关 键 词：储气库 油套管 选材 氢腐蚀 SSRT法 

分 类 号：TE988[石油与天然气工程—石油机械设备]