Zirconium microalloyed weldable aluminum-zinc-magnesium alloy with high purity, high-strength and corrosion resistance
A micro-alloying, aluminum-zinc-magnesium technology, which is applied in the field of high-purity, high-strength, corrosion-resistant, weldable aluminum-zinc-magnesium alloys and its preparation, can solve the problems of high strength, high corrosion resistance, and high weldability, etc. Corrosion resistance and welding performance, high corrosion resistance, high strength effect
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Embodiment 1
[0026] Embodiment one: the A-1 alloy in table 1 is prepared by ingot metallurgy.
[0027] Add high-purity aluminum to graphite clay crucible and melt it in a resistance crucible furnace at a melting temperature of 750°C. After the high-purity aluminum is melted, add Al-Cr, Al-Mn, Al-Cu, Al-Zr, Al-Be in the middle Alloy, the temperature is lowered to 700°C, press industrial pure Mg with a bell jar, add industrial pure Zn after melting, and after all the intermediate alloys and metals are melted, the temperature rises to 740°C and uses 0.2%~0.4% hexachloroethane C 2 Cl 6 (briquetting) Refining and degassing, removing slag, standing still for 10-15 minutes, pouring into water-cooled iron mold, demoulding after cooling. The aluminum alloy melted and cast into an ingot is annealed at 410~425℃×24h, hot rolled at 460℃~315℃, and then solution treated. The solution treatment system is as follows: after heating to 510~520℃ and holding for 25~60min, Slowly cool down to 450~460°C at a c...
Embodiment 2
[0029] Example 2: The alloy A-2 in Table 1 was prepared by ingot metallurgy.
[0030] Add high-purity aluminum to the graphite clay crucible and melt it in a resistance crucible furnace at a melting temperature of 760°C. After the high-purity aluminum is melted, add Al-Cr, Al-Mn, Al-Cu, Al-Zr, Al-Be in the middle Alloy, the temperature is lowered to 685°C, press the industrial pure Mg with a bell jar, add industrial pure Zn after melting, and after all the intermediate alloys and metals are melted, the temperature rises to 745°C and uses 0.2%~0.4% hexachloroethane C 2 Cl 6 Refining and degassing, removing slag, standing still for 10-15 minutes, pouring into water-cooled iron mold, demoulding after cooling. The aluminum alloy melted and cast into an ingot is annealed at 415~425℃×20h, hot rolled at 460℃~315℃, and then solution treated. The solution treatment system is as follows: after heating to 510~520℃ and holding for 25~60min, Slowly cool down to 450~460°C at a cooling rat...
Embodiment 3
[0032] Example 3: Alloy A-3 in Table 1 was prepared by ingot metallurgy.
[0033] Add high-purity aluminum to the graphite clay crucible and melt it in a resistance crucible furnace at a melting temperature of 775°C. After the high-purity aluminum is melted, add Al-Cr, Al-Mn, Al-Cu, Al-Zr, Al-Be in the middle Alloy, the temperature is lowered to 686°C, press the industrial pure Mg with a bell jar, add industrial pure Zn after melting, and after all the intermediate alloys and metals are melted, the temperature rises to 737°C and uses 0.2%~0.4% C 2 Cl 6 (briquetting) Refining and degassing, removing slag, standing still for 10-20 minutes, pouring into water-cooled iron mold, demoulding after cooling. The aluminum alloy melted and cast into an ingot is annealed at 415~425℃×26h, hot rolled at 460℃~315℃, and then solution treated. The solution treatment system is as follows: after heating to 510~520℃ and holding for 25~60min, Slowly cool down to 450~460°C at a cooling rate of 0....
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Abstract
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