| 镁处理对海底管线钢氢致开裂敏感性和氢捕获效率影响 |
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| 引用本文： | 郎丰军,黄峰,徐进桥,岳江波,黄先球,刘静.镁处理对海底管线钢氢致开裂敏感性和氢捕获效率影响[J].钢铁研究学报,2021,33(3):253-260. |
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| 作者姓名： | 郎丰军 黄峰 徐进桥 岳江波 黄先球 刘静 |
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| 作者单位： | 1.武汉科技大学省部共建耐火材料与冶金国家重点实验室， 湖北 武汉 430081；2.武汉科技大学湖北省海洋工程材料及服役安全工程技术研究中心， 湖北 武汉 430081；3.武汉钢铁有限公司， 湖北 武汉 430080 |
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| 摘 要： | 摘要：通过NACE TM 0284 2016标准试验和Davanathan Stachurski双电解池氢渗透试验，评估和分析了不同镁添加量X70级别海底管线试验钢的氢致开裂（HIC）敏感性和氢捕获效率。结果表明，镁处理可以细化钢中夹杂物，形成以Ti2O3为主要成分的复合夹杂物。随着镁添加量的增加，试验钢的晶粒依次细化，虽然钢中夹杂物总数增多，但大尺寸夹杂物数量减少。镁处理是通过改变夹杂物数量、成分和尺寸分布从而改善其抗HIC敏感性的。在本试验范围内，镁添加量为0.003%（质量分数）的试验钢抗HIC性能最佳。
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| 关 键 词： | 关键词：镁处理 氢致开裂 氢捕获效率 海底管线钢 |
Effect of magnesium treatment on hydrogen trapping efficiency and hydrogen induced cracking susceptibility of submarine pipeline steel |
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| LANG Fengjun,HUANG Feng,XU Jinqiao,YUE Jiangbo,HUANG Xianqiu,LIU Jing.Effect of magnesium treatment on hydrogen trapping efficiency and hydrogen induced cracking susceptibility of submarine pipeline steel[J].Journal of Iron and Steel Research,2021,33(3):253-260. |
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| Authors: | LANG Fengjun HUANG Feng XU Jinqiao YUE Jiangbo HUANG Xianqiu LIU Jing |
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| Affiliation: | 1.The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology，Wuhan 430081, Hubei, China；2.Hubei Engineering Technology Research Center of Marine Materials and Service Safety, Wuhan University of Science and Technology， Wuhan 430081, Hubei, China；3.Wuhan Iron and Steel Co., Ltd.， Wuhan 430080, Hubei, China |
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| Abstract: | The hydrogen trapping efficiency and hydrogen induced cracking (HIC) susceptibility of X70 submarine pipeline steel with different magnesium contents were studied by NACE TM 0284 2016 standard test and Davanathan Stachurski double electrolytic cell for hydrogen permeation test. The results show that magnesium treatment refine the inclusions, forming Ti2O3 composite inclusions in test steels. The grain size of test steel is gradually refined with the magnesium content increasing. Although the total quantity of inclusions increase, the quantity of large size inclusions decrease. Magnesium treatment improve HIC susceptibility of test steels by changing the quantity, composition and size distribution of inclusions. The test steel with 0.003 mass% magnesium addition has the best HIC resistance in this test range. |
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| Keywords: | Key words：magnesium treatment hydrogen induced cracking （HIC） hydrogen trapping efficiency submarine pipeline steel |
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