Al-Fe-Sb-RE aluminum alloy, and preparation method and power cable thereof
An al-fe-sb-re, power cable technology, applied in the field of alloys, can solve problems such as poor fatigue resistance, potential safety hazards, and quality problems
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[0064] The present invention also provides a method for preparing an Al-Fe-Sb-RE aluminum alloy, comprising the following steps:
[0065] a) Cast the raw materials of the following composition to obtain an aluminum alloy ingot: 0.01~1.6wt% Fe, 0.001~0.3wt% Cu, 0.001~0.3wt% Mg, 0.001~0.3wt% Co, 0.001~0.2 wt% Be, 0.001~0.3wt% Ca, 0.001~0.2wt% Zn, 0.001~0.3wt% Sr, 0.001~0.3wt% Zr, 0.002~0.25wt% Li, 0.001~0.2wt% Na, 0.002~0.25wt% K, 0.001~0.2wt% Ti, 0.001~0.15wt% V, 0.001~0.12wt% Cr, 0.001~0.12wt% Mn, 0.001~0.15wt% Ni , 0.001~0.2wt% of Ga, 0.003~0.2wt% of Ge, 0.001~0.2wt% of Rb, 0.001~0.15wt% of Nb, 0.001~0.2wt% of Mo, 0.001~0.25wt% of Tc, 0.001 ~0.15wt% Ru, 0.002~0.1wt% Rh, 0.001~0.12wt% Pd, 0.001~0.1wt% Ag, 0.002~0.13wt% Cd, 0.003~0.18wt% In, 0.001~0.08 wt% of Sn, 0.001~0.3wt% of Sb, 0.01~3.0wt% of RE, greater than zero and less than or equal to 0.2wt% of Si, greater than zero and less than or equal to 0.8wt% of B and the balance of aluminum;
[0066] b) performing homogeniza...
Embodiment 1
[0078] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it warm at 720°C. The melting process is completed in a sealed environment; first add Fe, Cu, Mg, Co, Be, Ca, Zn, Sr, Zr, Si , B, Li, Na, K, Ti, V, Cr, Mn, Ni, Ga, Ge, Rb, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn and Sb, after stirring Then add rare earth RE and stir for 20 minutes until it is fully stirred evenly, and then keep it for 30 minutes; then refine the above-mentioned alloy melt in the furnace; Operate in a sealed environment; after refining, remove slag, let it stand, and adjust the temperature to 650°C, the alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting to obtain aluminum alloy ingots, and the composition of the ingots is listed in Table 1;
[0079] (2) Heat up the aluminum alloy ingot obtained in step (1) at a rate of 5°C / min to 450°C, hold it for 6 hours, and then roll it into a rod;
[0080] (3) Anneal the rod ...
Embodiment 2
[0084] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it warm at 740°C. The melting process is completed in a sealed environment; first add Fe, Cu, Mg, Co, Be, Ca, Zn, Sr, Zr, Si , B, Li, Na, K, Ti, V, Cr, Mn, Ni, Ga, Ge, Rb, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn and Sb, after stirring Then add rare earth RE and stir for 20 minutes until it is fully stirred evenly, and then keep it for 30 minutes; then refine the above-mentioned alloy melt in the furnace; Operate in a sealed environment; after refining, remove slag, let it stand, and adjust the temperature to 720°C, the alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting to obtain aluminum alloy ingots. The composition of the ingots is listed in Table 1;
[0085] (2) Heat up the aluminum alloy ingot obtained in step (1) at a rate of 3°C / min to 550°C, hold it for 16 hours and then roll it into a rod;
[0086] (3) Anneal the rod mate...
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