Ht-2402-100kn universal testing machine is used to measure the tensile properties of ADI in strict accordance with GB / T 228-2002. Each group of tensile tests shall not be less than 3 times, and the average value shall be taken as the final test result. The calculation formula of elongation A is as follows:
L0 – gauge length / mm;
L1 – length after fracture / mm.
The hardness of metal was tested in strict accordance with GB / T 231.1-2009. The specific methods are as follows: grinding the surface of the sample with sandpaper → washing the oxide and dirt on the surface with absolute ethanol → testing the hardness of the sample (the test force is maintained for about 15s). In order to reduce the test error, each sample should be tested at least three times, and the average value of the measured value is taken as the final test result of the sample hardness.