| 高强度结构钢腐蚀疲劳裂纹扩展机制图 |
| |
| 引用本文： | 张平生,黄淑菊.高强度结构钢腐蚀疲劳裂纹扩展机制图[J].机械工程学报,1992,28(1):98-103，. |
| |
| 作者姓名： | 张平生 黄淑菊 |
| |
| 作者单位： | 西安交通大学 |
| |
| 摘 要： | 本文研究了20SiMn2MoV高强度结构钢在蒸馏水和盐水中的腐蚀疲劳和应力腐蚀开裂行为。试验结果表明，应力比R对da/Dn-ΔK曲线及断裂机制类型有显著影响。提出了能够描述R影响的以ΔK和Km（Km=1/2Kmax＋Kmax]）为坐标轴的腐蚀疲劳裂纹扩展机制图，并讨论了断裂机制转变的条件。
|
| 关 键 词： | 腐蚀疲劳 高强度钢 裂纹扩展 |
CORROSION FATIGUE CRACK PROPAGATION MECHANISM MAP FOR HIGH STRENGTH STEEL |
| |
| Zhang Pingsheng,Huang Shuju.CORROSION FATIGUE CRACK PROPAGATION MECHANISM MAP FOR HIGH STRENGTH STEEL[J].Chinese Journal of Mechanical Engineering,1992,28(1):98-103，. |
| |
| Authors: | Zhang Pingsheng Huang Shuju |
| |
| Affiliation: | Xi'an Jiaotong University |
| |
| Abstract: | Corrosion fatigue crack growth behaviors in a high strength steel (20SiMn2MoV) subjected to various stress ratios (R=0.2, 0.3, 0.5, 0.8) loading, while immersed in saline water (3.5% NaC1) or distilled water, were observed. The testing results indicat that stress ratio has an important effect on both da/Dn-△K curves and crack propagation mechanisms. Based upon it, the corrosion fatigue crack propagation mechanism map (CFCPM map) with Km(=0.5(Kmax+Kmin)) versus △K as coordinates has been built up. Criteria for the changes from one corrosion fatigue mechanism to another are presented in CFCPM map and discussed. |
| |
| Keywords: | |
|
| 点击此处可从《机械工程学报》浏览原始摘要信息 |
|
点击此处可从《机械工程学报》下载全文 |
|
