| 高强钢WOL试样应力腐蚀开裂的金相跟踪观察 |
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| 引用本文： | 李会录,余竹焕,强军锋,乔利杰,褚武扬. 高强钢WOL试样应力腐蚀开裂的金相跟踪观察[J]. 腐蚀与防护, 2008, 29(10): 587-588,628 |
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| 作者姓名： | 李会录 余竹焕 强军锋 乔利杰 褚武扬 |
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| 作者单位： | 西安科技大学材料系，北京科技大学材料物理系 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 高强钢WOL恒位移试样应力腐蚀的金相跟踪观察表明:高强钢的应力腐蚀在微裂纹出现之前,先在缺口前端出现滑移线,滑移线的出现是由于氢引起的,位错运动形成滑移台阶.氢促进局部塑性变形,当局部塑性变形发展到临界状态时,缺口前端就出现微裂纹.
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| 关 键 词： | 滑移线 塑性变形 微裂纹 位错 |
Metallography Investigation of Hydrogen-induced Stress Corrosion Cracking for High-strength Steels |
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| LI Hui-lu,YU Zhu-huan,QIANG Jun-feng,QIAO Li-jie,CHU Wu-yang. Metallography Investigation of Hydrogen-induced Stress Corrosion Cracking for High-strength Steels[J]. Corrosion & Protection, 2008, 29(10): 587-588,628 |
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| Authors: | LI Hui-lu YU Zhu-huan QIANG Jun-feng QIAO Li-jie CHU Wu-yang |
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| Abstract: | Metallographical track investigation of stress corrosion cracking of high-strength steels WOL constant displacement specimen indicated that the slip line of stress corrosion cracking of high-strength steels preexistence in notch front-end before the appearance of micro-cracks,hydrogen induced slip line and displacement step was caused by dislocation motion.Hydrogen could accelerate the local plastic deformation and the micro-crack appearance in gap front-end when the local plastic deformation run to critical condition. |
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| Keywords: | slip line plastic deformation micro-cracks dislocation |
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