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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。
X100 pipeline steel of a certain brand in foreign countries was subjected to different heating regimes and then subjected to corrosion in different pH values of hydrogen sulfide solution at different time periods to examine the changes of its physical properties and its corresponding organization and corrosion resistance The relationship between. The results show that after the hot simmer, the microstructure of the sample after the hydrogen sulfide corrosion has the advantages of small size change, lowest mass loss and small hardness loss. After the hot simmering, the coarse tissue sample does not matter whether the microstructure is martensite or bainite Multi-lateral ferrite, its corrosion layer peeling serious corrosion resistance is weak. This may be due to the fact that the reticular grain boundaries of the fine-grained structure support the corrosion layer. It is also possible that the microstructure of the low-temperature-quenched structure has good toughness and the corrosion layer is viscous and can cover the surface of the sample to hinder the further corrosion.