恒温剥蚀对LC4CS铝合金结构和力学性能的影响  

Effect of Exfoliation on Structure and Tensile Strength of LC4CS Aluminum Alloy at Constant Temperature

作　　者：何建平[1] 陈文理[2] 许玮 樊蔚勋[1] 

机构地区：[1]南京航空航天大学材料科学与工程系,南京210016 [2]海南航空股份有限公司,海南570203 [3]航空工业总公司320厂,南昌330024

出　　处：《南京航空航天大学学报》1999年第5期575-579,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：研究了恒温剥蚀对ＬＣ４ＣＳ铝合金试样表面宏观形貌及截面微观结构的影响；测定了试样欧姆电阻、力学性能随剥蚀时间的变化。由欧姆电阻值计算所得试样的腐蚀速率，在剥蚀前期快速增大，４ ｈ 后逐渐下降至一定值。金相显微观察结果表明。The effect of exfoliation on cross section and top surface is studied. It is also tested that the Ohmic resistance and the tensile strength of the sample vary with time. Corrosion rate of the sample, which is calculated from the Ohmic resistance, speedily increases at prophase of exfoliation, after 4 h and then it gradually drops to a fixed value. Metallographic observation test shows that the depression of tensile strength is mostly due to the variation of microstructure of aluminum alloy.

关 键 词：腐蚀速度 剥离腐蚀 铝合金 微观结构 力学性能 

分 类 号：V252.2[一般工业技术—材料科学与工程] TG178[航空宇航科学与技术—航空宇航制造工程]