Enhancement mechanism of super fine machining pattern on mechanical property of adhesion interface of al alloy
The effect of super fine groove pattern with the width of 0.1mm and spacing of 0.2mm formed on Al alloy surface by fine machining on adhesion peel strength was investigated. The results indicate that such groove pattern can enhance adhesion strength in T-Peel test by 51.4％. A fracture model containing three stages such as fracture on Al alloy surface, inside the adhesive and along the vertical surface of the groove, is proposed and proved credible through studying the fracture morphology by scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). The fracture modes for the three stages in T-Peel test are peel (interfacial + cohesive), peel (cohesive) and shear (interfacial + cohesive) respectively, which reasonably explains the enhancement mechanism of groove pattern on adhesion strength in T-Peel test.
Adhesion strength Mechanical pattern T-Peel test Fracture Mechanism analysis
GAO Haitao HUANG Ping YANG Xin
State Key Laboratory for Mechanical Behavior of Materials, Shool of Materials Science and Engineerin General Motors China Science Lab, Shanghai 200120, China
国际会议
北京
英文
683-686
2012-10-23（万方平台首次上网日期，不代表论文的发表时间）