corrosion ofР the product performance comparative test analysis． The results show that 7108 alloy is superior to 6005A alloy in mechanicalР ， ，Р tensile properties bending properties and material corrosion resistance and there is no obvious difference between the twoР ，Р alloys in metallogrphic structure． Finally it is concluded that 6005A alloy can be replaced by 7108 alloy for the application andР promotion of automobile bumper．Р Р Keywords bumper 7108 alloy mechanical properties metallographic structure intergranular corrosion
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