Observation method for internal shear band of AZ31 magnesium alloy
A magnesium alloy and shear band technology, applied in the field of microstructure observation of metal materials, can solve the problems of small contrast difference, difficult to distinguish, small observation range of shear band, etc., achieves low equipment requirements, improves contrast difference, technology simple effect
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Embodiment 1
[0028] Step 1, use sliding friction to make the surface of AZ31 magnesium alloy plastically deform, and control the strain rate of sliding friction on the surface of AZ31 magnesium alloy to be 10 2 the s -1 ;
[0029] Step 2: Sampling the plastically deformed AZ31 magnesium alloy in step 1 to obtain an AZ31 magnesium alloy sample, and then annealing the AZ31 magnesium alloy sample; the temperature of the annealing treatment is 180° C., and the holding time is 20 minutes;
[0030] Step 3, use 600 sequentially # 、1000 # , 2000 # 、5000 # Grind the surface of the AZ31 magnesium alloy sample after the annealing treatment in step 2 step by step with silicon carbide sandpaper to obtain a flat, finely scratched AZ31 magnesium alloy sample observation plane; Observe that the plane is rotated 90° horizontally and then grind until the scratches from the last grinding are worn off;
[0031] Step 4, using a corrosive agent to corrode the observation plane of the AZ31 magnesium alloy ...
Embodiment 2
[0042] Step 1. Use sliding friction to make the surface of AZ31 magnesium alloy plastically deform, and control the strain rate of sliding friction on the surface of AZ31 magnesium alloy to be 5.5×10 2 the s -1 ;
[0043] Step 2. Sampling the plastically deformed AZ31 magnesium alloy in step 1 to obtain an AZ31 magnesium alloy sample, and then annealing the AZ31 magnesium alloy sample; the temperature of the annealing treatment is 160° C., and the holding time is 20 minutes;
[0044] Step 3, use 600 sequentially # 、1000 # , 2000 # 、5000 # Grind the surface of the AZ31 magnesium alloy sample after the annealing treatment in step 2 step by step with silicon carbide sandpaper to obtain a flat, finely scratched AZ31 magnesium alloy sample observation plane; Observe that the plane is rotated 90° horizontally and then grind until the scratches from the last grinding are worn off;
[0045] Step 4, using a corrosive agent to corrode the observation plane of the AZ31 magnesium al...
Embodiment 3
[0049] Step 1, use sliding friction to make the surface of AZ31 magnesium alloy plastically deform, and control the strain rate of sliding friction on the surface of AZ31 magnesium alloy to be 10 3 the s -1 ;
[0050] Step 2. Sampling the plastically deformed AZ31 magnesium alloy in step 1 to obtain an AZ31 magnesium alloy sample, and then annealing the AZ31 magnesium alloy sample; the temperature of the annealing treatment is 200° C., and the holding time is 20 minutes;
[0051] Step 3, use 600 sequentially # 、1000 # , 2000 # 、5000 # Grind the surface of the AZ31 magnesium alloy sample after the annealing treatment in step 2 step by step with silicon carbide sandpaper to obtain a flat, finely scratched AZ31 magnesium alloy sample observation plane; Observe that the plane is rotated 90° horizontally and then grind until the scratches from the last grinding are worn off;
[0052] Step 4, using a corrosive agent to corrode the observation plane of the AZ31 magnesium alloy ...
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