Surface treatment of new type aluminum lithium alloy and fatigue crack behaviors of this alloy plate bonded with Ti-6Al-4V alloy strap

详细信息	查看全文 | 推荐本文 |

• 作者：Zhen-Qi Sun^a ; ^{szqi982010@csu.edu.cn} ; Ming-Hui Huang^a ; Guo-Huai Hu^b
• 关键词：A. Non-ferrous metals and alloys ; C. Surface treatments ; E. Failure analysis
• 刊名：Materials and Design
• 出版年：2012
• 期刊代码：56_02613069
• 类别：ms
• 出版时间：March, 2012
• 卷：35
• 期：Complete
• 页码：725-730
• 文件大小：1098 K

摘要

Samples consisting of new aluminum lithium alloy (Al-Li alloy) plate developed by the Aluminum Company of America and Ti-6Al-4V alloy (Ti alloy) plate were investigated. Plate of 400 mm 脳 140 mm 脳 2 mm with single edge notch was anodized in phosphoric solution and Ti alloy plate of 200 mm 脳 20 (40) mm 脳 2 mm was anodized in alkali solution. Patterns of two alloys were studied at original/anodized condition. And then, aluminum alloy and Ti alloy plates were assembled into a sample with FM 94 film adhesive. Fatigue crack behaviors of the sample were investigated under condition of nominal stress 蟽 = 36 MPa and 54 MPa, stress ratio of 0.1. Testing results show that anodization treatment modifies alloys surface topography. Ti alloy bonding to Al-Li alloy plate effectively retards crack growth than that of Al-Li alloy plate. Fatigue life of sample bonded with Ti alloy strap improves about 62.5%than that of non-strap plate.