High damping composite Mg2Si/Mg 9A1-Y material
A composite material and high damping technology, applied in the field of metal materials, can solve problems such as difficult application and complicated operation, and achieve the effects of good thermal resistance, simple preparation method and easy operation, and high vibration damping ability.
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Embodiment 1
[0012] Alloy composition (percentage by weight): 6% Al, 1.0% Si, 0.4% Y, 0.3% RE, 0.5% Sb, impurity elements are less than 0.02%, and the rest is Mg.
[0013] Under the condition of gas protection, keep warm at 700°C, add Al-20Si, Mg-17Y and Al-10RE master alloy after pure magnesium and pure aluminum are completely melted, and finally add industrial pure antimony. Adding method: Wrap the metal antimony with aluminum foil first, then dry the water in an oven at 200°C, quickly press it under the liquid surface with a bell jar for about 10 minutes, then raise the temperature to 750°C to refine the alloy liquid, and then let it stand for 20 minutes After 10 minutes, remove the scum on the surface and cast it in a metal mold. Wire cut the resulting composite into 40 x 5 x 1mm 3 , measured by DMTA at a strain amplitude of 10 -6 to 10 -4 Damping value in range The results are shown in the table below.
Embodiment 2
[0015] Alloy composition (weight percent): 8% Al, 3.0% Si, 0.6% Y, 0.3% RE, 0.5% Sb, impurity elements are less than 0.02%, and the rest is Mg.
[0016] Under the condition of gas protection, keep warm at 700°C, add Al-20Si, Mg-17Y and Al-10RE master alloy after pure magnesium and pure aluminum are completely melted, and finally add industrial pure antimony. Adding method: Wrap the metal antimony with aluminum foil first, then dry the water in an oven at 200°C, quickly press it under the liquid surface with a bell jar for about 10 minutes, then raise the temperature to 750°C to refine the alloy liquid, and then let it stand for 20 minutes After 10 minutes, remove the scum on the surface and cast it in a metal mold. Wire cut the resulting composite into 40 x 5 x 1mm 3 , measured by DMTA at a strain amplitude of 10 -6 to 10 -4 The damping value within the range, the results are shown in the table below.
Embodiment 3
[0018] Alloy composition (percentage by weight): 9% Al, 4.0% Si, 0.8% Y, 0.6% RE, 0.5% Sb, impurity elements are less than 0.02%, and the rest is Mg.
[0019] Under the condition of gas protection, keep warm at 700°C, add Al-20Si, Mg-17Y and Al-10RE master alloys after the pure magnesium and pure aluminum are completely melted, and finally add industrial pure antimony. Adding method: Wrap the metal antimony with aluminum foil first, then dry the water in an oven at 200°C, quickly press it under the liquid surface with a bell jar for about 10 minutes, raise the temperature to 750°C to refine the alloy liquid, and then let it stand for 20 minutes After 10 minutes, remove the scum on the surface and cast it in a mold. Wire cut the resulting composite into 40 x 5 x 1mm 3 , measured by DMTA at a strain amplitude of 10 -6 to 10 -4 damping value in the range. The results are shown in the table below.
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