| LY12CZ航空铝合金腐蚀疲劳断口研究 |
| |
| 引用本文： | 李旭东,穆志韬,刘治国,李玲.LY12CZ航空铝合金腐蚀疲劳断口研究[J].装备环境工程,2013,10(4):9-12,29. |
| |
| 作者姓名： | 李旭东 穆志韬 刘治国 李玲 |
| |
| 作者单位： | 海军航空工程学院青岛校区,山东青岛266041 |
| |
| 摘 要： | 借助扫描电镜以及能谱分析技术对预腐蚀LY12CZ铝合金疲劳断口形貌进行了研究,分析了腐蚀疲劳断口形貌与合金中的Si,Mg等元素以及腐蚀损伤对断裂过程的影响。结果表明疲劳断口是以韧性为主的多源性断口。腐蚀坑使得材料局部力学性能退化,成为裂纹萌生源。合金化过程中控制合适的Mg,Si等强化相元素含量,能够使强度与塑性相匹配,从而提高材料的抗疲劳性能。
|
| 关 键 词： | 疲劳 铝合金 断口分析 扫描电子显微镜 |
| 收稿时间： | 2/7/2013 12:00:00 AM |
| 修稿时间： | 7/1/2013 12:00:00 AM |
Corrosion Fatigue Fracture Analysis of LY12CZ Aluminum Alloy |
| |
| LI Xu-dong,MU Zhi-tao,LIU Zhi-guo and LI Ling.Corrosion Fatigue Fracture Analysis of LY12CZ Aluminum Alloy[J].Equipment Environmental Engineering,2013,10(4):9-12,29. |
| |
| Authors: | LI Xu-dong MU Zhi-tao LIU Zhi-guo and LI Ling |
| |
| Institution: | (Qingdao Campus of Naval Aeronautical Academy,Qingdao 266041,China) |
| |
| Abstract: | Fatigue fracture surface of AA LY12CZ with corrosion damage was studied using scanning electron microscope and energy spectrum analysis.The effect of fatigue fracture feature,alloy element Si and Mg,and the corrosion damage on the fracture process was analyzed.The results indicated that the fatigue fracture surface is tough fracture with multiple fatigue sources;pits introduced by corrosion damage weaken the material property,which serve as crack nucleation sites;proper hardening constituent element introduced during alloying process such as Si and Mg,will make strength and plasticity match,thus improve fatigue performance of materials. |
| |
| Keywords: | fatigue aluminum alloy fracture analysis SEM |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《装备环境工程》浏览原始摘要信息 |
| 点击此处可从《装备环境工程》下载免费的PDF全文 |
|
