热煨X100管线钢的抗硫化氢腐蚀性能Corrosion resistance of sulfureted hydrogen of reheated X100 pipeline steel
张小立,蒋志强,李世显,赵红玲
摘要(Abstract):
对国外某品牌的X100管线钢经过不同的加热制度后,使其在不同p H值的硫化氢溶液中经不同时间段的腐蚀后,考察了其物理性能变化及其对应的组织和抗腐蚀能力之间的关系。结果表明,热煨后组织细小的试样硫化氢腐蚀后其尺寸变化小、质量损失最低、硬度损失小;而热煨后组织粗大的试样,无论其组织为马氏体、贝氏体还是多边铁素体,其腐蚀层剥落严重,抗腐蚀性能较弱。这可能是因为细晶组织的网状晶界对腐蚀层有支撑作用,也可能是因为低温淬火组织韧性好,腐蚀层具有粘性,可以覆盖试样表面,从而阻碍进一步腐蚀的发生。
关键词(KeyWords): X100热煨弯管;热煨组织;硫化氢腐蚀
基金项目(Foundation): 国家自然科学基金(70971120)
作者(Author): 张小立,蒋志强,李世显,赵红玲
DOI: 10.13289/j.issn.1009-6264.2015.s1.019
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