High-quality aluminum alloy for semiconductor and preparation method of high-quality aluminum alloy
A high-quality, semi-conductive technology, applied in the field of non-ferrous metal pressure processing, can solve the problems of insufficient crushing of the coarse second phase, coarse grains, uneven structure, etc., and achieve remarkable grain refinement effect, good strong plasticity level, strong The effect of a higher level of plasticity
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Embodiment 1
[0038] The composition of high-quality aluminum alloys for semiconductors is 0.6%Si, 0.3%Cu, 0.15%Mn, 1.3%Mg, 0.28%Zn, 0.15%Ti, 0.15%Cr, 0.05%Zr, 0.05%RE, Fe<0.5%, The balance is Al for selection.
[0039] Semi-continuous casting was used to obtain ingots φ305×720mm; the ingots were subjected to soaking treatment in a six-channel circulating air resistance heating furnace, and the soaking system was 540°C×18h + 570°C×24h, and air-cooled to room temperature; the soaked ingots were The ingot is turned and processed to φ280×720mm; before forging, the processed ingot is immersed in a liquid nitrogen cryogenic box for 70 minutes to ensure that the temperature of the ingot after cryogenic treatment is kept below -150°C; the ingot is forged twice and finished forging. It is carried out on a 2000t hydraulic press. The first forging deformation process is as follows:
[0040] φ280×720→φ361×432 → 269×610
[0041]The first forging is completed, the billet is annealed, kept at 410°C fo...
Embodiment 2
[0048] The composition of high-quality aluminum alloys for semiconductors is 0.6%Si, 0.3%Cu, 0.15%Mn, 1.3%Mg, 0.28%Zn, 0.15%Ti, 0.15%Cr, 0.05%Zr, 0.05%RE, Fe<0.5%, The balance is Al for selection.
[0049] Semi-continuous casting was used to obtain ingots of φ380×720mm; the ingots were soaked in a six-channel circulating air resistance heating furnace, and the soaking system was 540°C×24h + 570°C×24h, and air-cooled to room temperature; the soaked ingots were The ingot is turned and processed to φ360×720mm; before forging, the processed ingot is immersed in a liquid nitrogen cryogenic box for 90 minutes to ensure that the temperature of the ingot after cryogenic treatment is kept below -150°C; the ingot is forged twice and finished forging. It is carried out on a 2000t hydraulic press. The first forging deformation process is as follows:
[0050] Φ360×720→Φ455×450→□341×630
[0051] The first forging is completed, the billet is annealed, kept at 410°C for 95 minutes, and the...
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