High-strength high-plastic rare earth magnesium alloy and preparation method thereof
A rare earth magnesium and alloy technology, applied in the field of high strength and high plastic rare earth magnesium alloy and its preparation, can solve the problems of high strength and high plasticity, and achieve the effects of balanced intragranular properties, increased energy, and increased alloy strength
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Embodiment 1
[0026] (1) Alloy composition
[0027] The alloy composition (mass fraction) is: Gd 7.22%, Y 2.14%, Nd 0.52%, Er 2.43%, Sm 0.42%, La0.34%, Ce 0.28%, Zr 0.46%; impurity elements Al≤0.02%, Cu≤ 0.02%, Fe≤0.02%, Ni≤0.02%, Si≤0.02%, and the rest is Mg.
[0029] After the batching is completed, place the weighed raw materials in an oven to dry for use, and the oven temperature is 120°C; when the alloy is smelted, pure magnesium and intermediate alloys Mg-Gd, Mg-Y, Mg-Nd, Mg-Er , Mg-Sm, Mg-La, and Mg-Ce are added to the crucible and heated up to melt. After the pure magnesium and the master alloy are completely melted, the temperature is raised to 800°C, and the Mg-Zr master alloy is added. After the Mg-Zr master alloy is completely melted, Refined for 10 minutes, then slag removed and left to stand, then cooled to 750°C, the alloy solution was poured into a steel mold, the steel mold was preheated to 200°C, and an inert gas was used for protection during ...
Embodiment 2
[0036] (1) Alloy composition
[0037] The alloy composition (mass fraction) is: Gd 8.42%, Y 2.84%, Nd 0.32%, Er 1.14%, Sm 0.21%, La0.12%, Ce 0.04%, Zr 0.45%; impurity elements Al≤0.02%, Cu≤ 0.02%, Fe≤0.02%, Ni≤0.02%, Si≤0.02%, and the rest is Mg.
[0038] (2) Alloy casting
[0039] After the batching is completed, place the weighed raw materials in an oven to dry for use, and the oven temperature is 120°C; when the alloy is smelted, pure magnesium and intermediate alloys Mg-Gd, Mg-Y, Mg-Nd, Mg-Er , Mg-Sm, Mg-La, and Mg-Ce are added to the crucible and heated up to melt. After the pure magnesium and the master alloy are completely melted, the temperature is raised to 800°C, and the Mg-Zr master alloy is added. After the Mg-Zr master alloy is completely melted, Refined for 10 minutes, then slag removed and left to stand, then cooled to 750°C, the alloy solution was poured into a steel mold, the steel mold was preheated to 200°C, and an inert gas was used for protection during ...
Embodiment 3
[0046] (1) Alloy composition
[0047] The alloy composition (mass fraction) is: Gd 8.35%, Y 1.24%, Nd 0.27%, Er 3.21%, Sm 0.19%, La0.11%, Ce 0.06%, Zr 0.42%; impurity elements Al≤0.02%, Cu≤ 0.02%, Fe≤0.02%, Ni≤0.02%, Si≤0.02%, and the rest is Mg.
[0048] (2) alloy casting
[0049] After the batching is completed, place the weighed raw materials in an oven to dry for use, and the oven temperature is 120°C; when the alloy is smelted, pure magnesium and intermediate alloys Mg-Gd, Mg-Y, Mg-Nd, Mg-Er , Mg-Sm, Mg-La, and Mg-Ce are added to the crucible and heated up to melt. After the pure magnesium and the master alloy are completely melted, the temperature is raised to 800°C, and the Mg-Zr master alloy is added. After the Mg-Zr master alloy is completely melted, Refined for 10 minutes, then slag removed and left to stand, then cooled to 750°C, the alloy solution was poured into a steel mold, the steel mold was preheated to 200°C, and an inert gas was used for protection during ...
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