| 不同组织X70钢在酸性土壤模拟溶液中的应力腐蚀敏感性 |
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| 引用本文： | 翟国丽,刘智勇,杜翠薇,李晓刚,王立贤.不同组织X70钢在酸性土壤模拟溶液中的应力腐蚀敏感性[J].腐蚀与防护,2009,30(3). |
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| 作者姓名： | 翟国丽 刘智勇 杜翠薇 李晓刚 王立贤 |
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| 作者单位： | 北京科技大学腐蚀与防护中心,北京市腐蚀、磨蚀与表面技术开放实验室,北京,100083
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| 基金项目： | 国家科技基础条件平台建设项目，规划重大项目 |
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| 摘 要： | 采用慢应变速率拉伸试验(SSRT)及断口观测研究了不同显微组织X70钢的应力腐蚀破裂(SCC)敏感性.结果表明:X70钢及其不同热处理后的劣化组织在鹰潭土壤模拟溶液中均具有明显的SCC敏感性;三种组织X70钢的SCC敏感性整体上表现为随外加电位的降低而增大,组织硬化和晶粒过大都能增加材料的SCC敏感性.
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| 关 键 词： | X70 管线钢 热处理 鹰潭土壤 慢应变速率拉伸 应力腐蚀破裂(SCC) |
Stress Corrosion Cracking of X70 Steel with Different Microstructures in Acid Soil Simulation Solution |
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| ZHAI Guo-li,LIU Zhi-yong,DU Cui-wei,LI Xiao-gang,WANG Li-xian.Stress Corrosion Cracking of X70 Steel with Different Microstructures in Acid Soil Simulation Solution[J].Corrosion & Protection,2009,30(3). |
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| Authors: | ZHAI Guo-li LIU Zhi-yong DU Cui-wei LI Xiao-gang WANG Li-xian |
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| Affiliation: | Corrosion and Protection Center;University of Science and Technology Beijing;Key Lab of Corrosion Erosion and Surface Technique Beijing;Beijing 100083;China |
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| Abstract: | The stress corrosion cracking(SCC) susceptibility of X70 steel with three types of microstructure was analyzed by means of slow strain rate testing(SSRT) and fracture surface(SEM) observation.The experimental results illustrated that the steel after different heat treatments had higher SCC susceptibility than the as received steel.With decreasing polarization potential,the SCC susceptibility of the X70 with different kinds of microstructure increased.Both hardening and grain coarsening can increase the SCC ... |
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| Keywords: | X70 pipeline steel heat treatment Yingtan soil SSRT SCC |
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