加载波形对D36钢腐蚀疲劳裂纹扩展速率的影响
Influence of Loading Waveforms on Corrosion Fatigue Crack Growth for D36 Steel
摘 要
对标准单边缺口三点弯曲试样分别施加三角波、正弦波、方波3种波形，得到了不同波形作用下的腐蚀疲劳裂纹扩展曲线,研究了在不同电位条件下加载波形对海水中D36钢腐蚀疲劳裂纹扩展速率(da/dN)的影响。结果表明：无阴极保护时，三角波和正弦波作用下试样的疲劳裂纹扩展速率相当，并小于方波作用下的疲劳裂纹扩展速率，且方波的加速作用体现在低应力强度因子幅度时；在阴极保护条件下，这种现象更为明显；而在阳极极化条件下，方波对试件的疲劳裂纹扩展的加速作用减弱。
腐蚀疲劳
D36钢
电位
裂纹扩展
loading waveform
corrosion fatigue
D36 steel
potential
crack growth
Abstract
The corrosion fatigue crack growth curves were measured under triangle, sinusoidal and square waveforms using gaps unilateral standard three-point bend specimens. The influence of loading waveforms on corrosion fatigue crack growth rate(CFCGR) for D36 steel was studied in natural seawater solution at different applied potentials. The results show that the CFCGR under sinusoidal waveform was the same as that under triangular waveform and was lower than the value under square waveform without cathodic protection. The acceleration of square waveform was more noticeable in the low stress intersity factor range. Under cathodic protection condition, the difference of the CFCGR between square waveform and sinusoidal waveform became wider. Whereas, the acceleration of square waveform on fatigue crack growth rate was reduced under anodic polarization condition.
中图分类号 TG172 DOI 10.11973/fsyfh-201604005
所属栏目 试验研究
基金项目 工信部高技术船舶项目
收稿日期 2015/3/24
修改稿日期
网络出版日期
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联系人作者梁永梅(lfly.m@163.com)
备注梁永梅(1991-)，硕士，从事海洋结构腐蚀疲劳性能的相关工作,
引用该论文: LIANG Yong-mei,HUANG Yi,WU Zhi-min. Influence of Loading Waveforms on Corrosion Fatigue Crack Growth for D36 Steel[J]. Corrosion & Protection, 2016, 37(4): 289
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参考文献
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【2】王荣,路旭民,郑修麟. 腐蚀疲劳裂纹扩展及寿命估算[J]. 航空学报,1993,14(3):188-192.
【3】李强. 0Cr18Ni9奥氏体不锈钢在低浓度NaCl溶液中的腐蚀疲劳裂纹扩展规律及机理研究[J]. 材料工程,2000,17(2):27-31.
【4】王俭秋,李劲,柯伟. 极化和频率对A537钢在3.5% NaCl溶液中的腐蚀疲劳裂纹扩展行为的影响[J]. 腐蚀科学与防护技术,1997,9(4):286-292.
【5】臧启山,刘慷,马敏雅. 频率、pH和温度对A537海洋用钢腐蚀疲劳性能的影响[J]. 腐蚀科学与防护技术,1989,1(2):10-14.
【6】BARSOM J M. Corrosion fatigue crack growth behavior below KISCC[J]. Engineering Fracture Mechanics,1971,3(1):15-25.
【7】BARSOM J M. Effect of cyclic stress on corrosion fatigue crack propagation below in a high strength steel[J]. Corrosion Fatigue,1972,3(1):424-435.
【8】LEE D N,LEE S K. Corrosion fatigue of SAE 51100 steel in 3.5% NaCl solution[J]. Materials Science and Technology,1989,5(1):477-486.
【9】LEE D N,LEE S K. Effect of stress waveforms on fatigue crack growth rates of 1C-1Cr steel in 3% NaCl solution and 0.17C-1.5Cr steel in synthetic seawater[J]. Scripta Metallurgica et Materialia,1993,28(1):411-416.
【10】WANG Z F,LI J,KE W. Influence of loading waveform on fatigue crack propagation at different potential for A537 steel in 3.5% NaCl neutral solution[J]. Scripta Metallurgica et Materialia,1992,27(5):1807-1812.
【11】WANG Z F,LI J,WANG J Q,et al. The influence of loading waveform on corrosion fatigue crack propagation[J]. Corrosion Science,1995,37(4):1551-1565.
【12】李劲,王政富,柯伟. 波形与电位对A537钢腐蚀疲劳裂纹扩展的影响[J]. 金属学报,1993,29(6):274-278.
【13】王政富,李劲,柯伟. 加载波形对工业纯铁在3.5% NaCl溶液中疲劳裂纹扩展的影响[J]. 中国腐蚀与防护学报,1993,13(4):335-340.
【14】ATKINSON J D,LINDLEY T C. Effect of stress waveform and hold-time on environmentally assisted fatigue crack propagation in a C-Mn structural steel[J]. Materials Science,1979,13(2):444-448.
【15】ACHILLES R D,BULLOCH J M. Influence of waveform on the fatigue crack growth behavior of SA508cl III RPV steel in various environment[J]. International Journal of Pressure Vessels and Piping,1987,30(2):375-389.
【16】SAXENA A,LIAW P K,LANDES J D. Influence of waveform and long hold time on the corrosion fatigue crack growth behavior of an austenitic steel[J]. Materials Science and Engineering,1987,95(3):137-143.
【17】郭淑铭,朱保华. 钛合金恒幅载荷下腐蚀疲劳裂纹扩展影响因素和机理综述[J]. 北京航空学院学报,1985,1(12):65-77.
【18】路民旭,刘晓坤,王建军,等. 波形和频率对GC-4钢腐蚀疲劳裂纹扩展特性的影响[J]. 航空学报,1993,14(1):49-55.
【19】NAKASA K,TAKEI H,KIDO M. The effect of repeating load on the crack growth initiation and crack propagation in delayed failure[J]. Engineering Fracture Mechanics,1977,9(4):867-877.
【20】NAKASA K,TAKEI H,KAJIWARA K. Effect of stress wave shape on the crack propagation velocity in cyclic delayed failure[J]. Engineering Fracture Mechanics,1981,14(3):507-517.
【21】王荣. 金属材料的腐蚀疲劳[M]. 西安：西北工业大学出版社,2001：21-23.
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