| 显微组织对管线钢硫化物应力腐蚀开裂的影响 |
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| 引用本文： | 赵明纯,单以银,李玉海,杨柯. 显微组织对管线钢硫化物应力腐蚀开裂的影响[J]. 金属学报, 2001, 37(10): 1087-1092 |
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| 作者姓名： | 赵明纯 单以银 李玉海 杨柯 |
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| 作者单位： | 中国科学院金属研究所, |
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| 基金项目： | 国家973重大基础研究项目 G1998061511 |
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| 摘 要： | 研究了不同显微组织管线钢的抗硫化物应力腐蚀开裂（SSCC）行为，结果表明，细小针状铁素体为主的显微组织抗SSCC性能最佳，超细铁素体的显微组织次之，（铁素体 珠光体）的显微组织最差，分析表明，氢脆是高强度管线钢在SSCC中的主要破坏形式。针状铁素体为主的显微组织，其内部高密度缠结位错和弥散析出的碳氮化物起到了强烈的氢陷阱作用，表现出最佳的抗SSCC性能。
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| 关 键 词： | 管线钢 显微组织 氢陷阱 硫化物 应力腐蚀开裂 |
| 文章编号： | 0412-1961(2001)10-1087-06 |
| 修稿时间： | 2001-03-09 |
EFFECT OF MICROSTRUCTURE ON SULFIDE STRESS CORROSION CRACKING OF PIPELINE STEELS |
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| ZHAO Mingchun,SHAN Yiyin,LI Yuhai,YANG Ke. EFFECT OF MICROSTRUCTURE ON SULFIDE STRESS CORROSION CRACKING OF PIPELINE STEELS[J]. Acta Metallurgica Sinica, 2001, 37(10): 1087-1092 |
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| Authors: | ZHAO Mingchun SHAN Yiyin LI Yuhai YANG Ke |
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| Abstract: | Study on sulfide stress corrosion cracking (SSCC) of pipeline steels with different microstructures was carried out. The results show that the microstructure dominated by fine acicular ferrite has the best resistant ability to SSCC, the microstructure of ultrafine ferrite is in the second position, and the microstructure mixed by ferrite and pearlite is relatively worse. It is analyzed that hydrogen embrittlement is the main failure mechanism for high strength pipeline steels in SSCC, and both the high density tangled dislocation and the fine carbonitride in acicular ferrite play a strong role of hydrogen traps, which result in a better resistance to SSCC. |
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| Keywords: | pipeline steel microstructure hydrogen trap sulfide stress corrosion cracking |
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