| 焊接热影响区的腐蚀疲劳性能 |
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| 引用本文： | 李青 杨德钧. 焊接热影响区的腐蚀疲劳性能[J]. 北京科技大学学报, 1990, 12(2): 177-181 |
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| 作者姓名： | 李青 杨德钧 |
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| 作者单位： | 北京科技大学表面科学与腐蚀工程系 |
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| 摘 要： | 利用焊接热模拟技术,在疲劳试样上模拟出与实际焊接热影响区不同组织区相近的组织,并用这些试样进行了疲劳寿命和疲劳裂纹扩展实验。通过了解焊接热影响区不同组织区的腐蚀疲劳性能,研究了焊接过程对CF-60钢腐蚀疲劳性能的影响。结果发现:焊接过程降低了CF-60钢的耐腐蚀疲劳性。其原因在于,焊接热影响区中的不完全重结晶区的腐蚀疲劳性能低于母材和其它组织区的疲劳性能。不完全重结晶区的耐蚀性最差是其腐蚀疲劳性能下降的主要原因之一。
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| 关 键 词： | CF－60 钢 焊接 腐蚀 疲劳 |
Corrosion Fatigue of Welding Heating-Affected Zone |
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| Li Qing Yang Dejun Zhu Rizhang Zhang Wenqi. Corrosion Fatigue of Welding Heating-Affected Zone[J]. Journal of University of Science and Technology Beijing, 1990, 12(2): 177-181 |
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| Authors: | Li Qing Yang Dejun Zhu Rizhang Zhang Wenqi |
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| Affiliation: | Dep.of Surface Sci. and Corro. Eng. |
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| Abstract: | In this paper, the structures similar to those of different zonesin the Heat-Affected Zone (HAZ) of actural welding were obtained in the fatigue specimens with the thermal-simulated technique; the experiments on fatigue life and crack propagation were carried out with the specimens. Through the corrosion fatigue behavior of the different zones in HAZ investigated, the effect of welding process on the corrosion fatigue properties of CF-60 steel was studied. It was found that welding could reduce the corrosion fatigue properties of CF-60 steel because the fatigue properties of the Imcomplete Recrystal Zone (IRZ) in HAZ were worse than those of matrix and the other zones. One of the main reasons that resulted in the case was that the anti-corrosin of IRZ was worst in the welded joint region. |
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| Keywords: | corrosion fatigue welding CF-60 steel |
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