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    慢應變拉伸法模擬含氫儲氣庫管材的應力腐蝕試驗研究

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

    • 摘要: 采用慢應變速率拉伸法，通過掃描電鏡、能譜分析等手段，分析不同溫度和干/濕氣環(huán)境（通入H2和CO2混合氣體）下HP13Cr、13Cr、3Cr的氫脆敏感性。結果顯示：干氣環(huán)境下，溫度對這3種材質氫脆敏感性的影響較??；120℃干氣環(huán)境中的氫脆系數排序為HP13Cr<13Cr<3Cr；濕氣環(huán)境中，由于Cl-和CO2水溶液的綜合作用，13Cr氫脆系數增大，但不同試驗條件下的氫脆系數均未大于25%，可以認為其并無氫脆敏感性傾向。針對模擬的含氫儲氣庫試驗條件，推薦使用13Cr系列材質。

       

      Abstract: Analyzed is the hydrogen-embrittlement sensitivity of the HP13Cr, 13Cr and 3Cr pipes presented under the conditions of different temperatures and dry/humid gas(H2 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℃ dry gas environment, the sequence of hydrogenembrittlement sensitivity coefficients of the said pipes is HP13Cr<13Cr<3Cr;And in the humid gas environment, due to the combined effects by the Cl-concentration and the CO2 water solution, the hydrogen embrittlement coefficient 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-containing gas storage, the 13Cr series tubular material is recommended for actual applications.

       

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