High-strength corrosion-resistant Al-Zn-Mg-Cu alloy added with Er and Pr and preparation method of high-strength corrosion-resistant Al-Zn-Mg-Cu alloy
A corrosion-resistant, high-strength technology, applied in the field of aluminum alloys, can solve problems such as insufficient process technology, and achieve the effect of reducing the number of grain boundaries, changing the shape and distribution, and refining grains
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Embodiment 1
[0027] Raw material preparation: the alloy composition includes: Zn7.49wt%, Mg2.18wt%, Cu2.45wt%, Zr0.18wt%, Er0.13wt%, Pr0.19wt%, Si≤0.1wt%, Fe≤0.1 wt%, other single impurity ≤ 0.05wt%, total impurity ≤ 0.15wt%, the rest is Al. Zn / Mg was 3.43, and the total amount of Zr+Er+Pr was 0.50. High-purity aluminum, high-purity zinc, high-purity magnesium, Al-5Zr, Al-50Cu, Al-10Er, Al-9.4Pr master alloys are used as raw materials for ingredients, and the purity of high-purity aluminum, high-purity zinc, and high-purity magnesium are all 99.9wt %.
[0028] Alloy smelting and casting: smelting in a well-type furnace, adding high-purity aluminum, Al-Zr, Al-Cu, Al-Er, Al-Pr master alloys into the furnace and raising the temperature to 740°C for melting, then adding the high-purity For zinc and high-purity magnesium, heat up to 750°C after the metal is melted, and then pass in argon for refining treatment; after refining, stir the alloy melt and let it stand at 730°C for 20 minutes, and ...
Embodiment 2
[0034] Raw material preparation: the alloy composition includes: Zn7.80wt%, Mg2.28wt%, Cu2.15wt%, Zr0.16wt%, Er0.11wt%, Pr0.16wt%, Si≤0.1wt%, Fe≤0.1 wt%, other single impurity ≤ 0.05wt%, total impurity ≤ 0.15wt%, the rest is Al. Zn / Mg was 3.42, and the total amount of Zr+Er+Pr was 0.43. High-purity aluminum, high-purity zinc, high-purity magnesium, Al-5Zr, Al-50Cu, Al-10Er, Al-9.4Pr master alloys are used as raw materials for ingredients, and the purity of high-purity aluminum, high-purity zinc, and high-purity magnesium are all 99.9wt %.
[0035] Alloy smelting and casting: smelting in a pit furnace, adding high-purity aluminum, Al-Zr, Al-Cu, Al-Er, Al-Pr master alloys into the furnace and raising the temperature to 730°C for melting, then adding the high-purity For zinc and high-purity magnesium, heat up to 745°C after the metal is melted, and then pass in argon for refining treatment; after refining, stir the alloy melt and let it stand at 730°C for 10 minutes, and remove...
Embodiment 3
[0041] Raw material preparation: the alloy composition includes: Zn7.50wt%, Mg2.30wt%, Cu2.30wt%, Zr0.22wt%, Er0.12wt%, Pr0.20wt%, Si≤0.1wt%, Fe≤0.1 wt%, other single impurity ≤ 0.05wt%, total impurity ≤ 0.15wt%, the rest is Al. Zn / Mg was 3.26, and the total amount of Zr+Er+Pr was 0.54. High-purity aluminum, high-purity zinc, high-purity magnesium, Al-5Zr, Al-50Cu, Al-10Er, Al-9.4Pr master alloys are used as raw materials for ingredients, and the purity of high-purity aluminum, high-purity zinc, and high-purity magnesium are all 99.9wt %.
[0042] Alloy smelting and casting: smelting in a well-type furnace, adding high-purity aluminum, Al-Zr, Al-Cu, Al-Er, Al-Pr master alloys into the furnace and raising the temperature to 740°C for melting, then adding the high-purity For zinc and high-purity magnesium, heat up to 750°C after the metal is melted, and then pass in argon for refining treatment; after refining, stir the alloy melt and let it stand at 730°C for 20 minutes, and ...
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