ZL101铝合金应力腐蚀特性研究  

Research on Stress Corrosion Cracking of ZL101 Aluminum Alloy

作　　者：李晨[1] 孟祥琦[1] 刘畅[1] 许金泉[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院工程力学系,上海200240

出　　处：《力学季刊》2011年第3期338-342,共5页Chinese Quarterly of Mechanics

摘　　要：研究了初始应力对于ZL101铝合金应力腐蚀的影响。采用自制载荷传感器确定试样加载线上的载荷从而确定其应力强度因子。通过ZL101铝合金在腐蚀溶液中的应力腐蚀实验,测定了不同应力状态下的起裂时间,分析了初始应力与起裂时间的关系。结果表明:ZL101铝合金在拉伸状态下的腐蚀裂纹扩展比较剧烈,而压缩状态下的裂纹扩展比较缓慢平稳。压缩应力状态下的起裂时间比拉伸应力状态下的要长,拉伸状态下材料对于应力腐蚀更为敏感。The influence of initial stress on stress corrosion cracking of ZL101 aluminum alloy was researched.The force of specimen loading line was measured by self-made loading sensors which could represent the stress intensity factor.The stress corrosion cracking time at different stress state was tested and the relation between initial stress and cracking time was analyzed through stress corrosion cracking tests of ZL101.The results indicate that the crack growth is severe under tension stress and it is slow and gentle under pressure stress.The cracking time under pressure stress is later than which under tension stress and it is more sensitive to stress corrosion under tension stress.

关 键 词：铸造铝合金 ZL101 应力腐蚀 

分 类 号：O346.4[理学—固体力学]