| 引用本文: | 胥聪敏,罗金恒,姚春发,杨东平.X100管线钢在含SRB的盐碱土壤溶液中的SCC行为[J].材料科学与工艺,2016,24(2):68-74.DOI:10.11951/j.issn.1005-0299.20160209. |
| XU Congmin,LUO Jinheng,YAO Chunfa,YANG Dongping.Stress corrosion cracking behavior of X100 pipeline steel in saline-alkali soil with the action of SRB[J].Materials Science and Technology,2016,24(2):68-74.DOI:10.11951/j.issn.1005-0299.20160209. |
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| 摘要: |
| 为证实SRB对X100管线钢在土壤中应力腐蚀行为的影响，采用慢应变速率拉神(SSRT)实验和SEM研究了X100管线钢在含有SRB的海滨模拟盐碱土壤溶液的应力腐蚀开裂行为.结果表明：X100钢母材和焊缝在无菌的海滨模拟盐碱土壤溶液的断裂模式为穿晶+沿晶SCC混合断裂，而在有菌的海滨模拟盐碱土壤溶液的断裂模式为穿晶SCC断裂；且X100钢母材和焊缝在无菌的海滨模拟盐碱土壤溶液中的SCC敏感性高于有菌时的，说明SRB的存在抑制了X100钢的脆变，导致X100钢的SCC敏感性降低.
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| 关键词: X100管线钢 应力腐蚀开裂 硫酸盐还原菌 盐碱土壤 |
| DOI：10.11951/j.issn.1005-0299.20160209 |
| 分类号:TG172.4 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(51271146);陕西省重点学科专项资金资助项目(YS37020203);陕西省能源化工过程强化重点实验室资助(SXECPI201503). |
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| Stress corrosion cracking behavior of X100 pipeline steel in saline-alkali soil with the action of SRB |
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XU Congmin1, LUO Jinheng2, YAO Chunfa3, YANG Dongping1
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(1.School of Materials Science and Engineering,Xi′an Shiyou University, Xi′an 710065, China; 2.CNPC Tubular Goods Research Institute,Xi′an 710065, China;3.Central Iron and Steel Research Institute, Beijing 100081,China)
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| Abstract: |
| To the influence of stress corrosion behavior of X100 pipeline steel in the soil, stress corrosion crack (SCC) behavior of X100 pipeline steel was investigated in saline-alkali soil SRB using slow strain rate test (SSRT) and scanning electron microscopy (SEM). The results show that X100 pipeline steel failure transgranular + intergranular mixed cracking suggest that SRB inhibit the brittleness and reduce SCC susceptibility of X100 pipeline steel.
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| Key words: X100 pipeline steel stress corrosion cracking (SCC) sulfate reducing bacteria (SRB) saline-alkali soil |
