[Chinese aluminum industry network] 6063 rare earth aluminum alloy is a more commonly used deformation alloy, used in industrial and civil buildings, its composition (%) is Mg0.67 ~ 0.70, Si0.45 ~ 0.48, Fe0.20 ~ 0.21, Yu is aluminum. In the alloy smelting process, 0.20-0.25% of rare earth metals are added, the tensile strength is increased by 24%, the extrusion speed is increased by 0.5 times, the yield rate is increased by 3%, and the surface quality is improved. Increased corrosion resistance and colorability. There are also Al-Si-M (M=Cu, Mg, Mn) alloys for adding rare earths for the manufacture of cylinder blocks and pistons.
Rare Earth Zinc-Aluminum Hot-Dip Alloy
In order to prevent corrosion of steel, Zn-Al hot-dipped alloy (Galfan) is usually used for better formability and corrosion resistance than galvanization, but zinc consumption is high and corrosion resistance needs to be improved. In recent years, Zn-Al-Mg-RE hot-plated alloys have been successfully developed and put into production. This rare earth hot plated alloy is superior to zinc and Zn-Al alloys in terms of fluidity, corrosion resistance, and coating formation performance.
Rare Earth Copper Wear Resistant Alloy
The general bearing material is tin bronze (namely babbitt), but it is more expensive. The lifetime of rare earth wear-resistant lead bronze alloy (RPH) is 1.5 times longer than that of Babba alloy, while the cost per ton is reduced by 5,000 to 6,000 yuan. Currently used in textile machinery.
Rare Earth Cemented Carbide
Cemented carbide is used for metal cutting, drills, and molds. Its hardness is high and its strength is high, but its bending resistance is poor and it is easy to damage. The rare-earth additive is ball-milled with the binder and the hard phase WC and TiC to prepare hard alloy raw powder, and the hard alloy produced by the pressure sintering process is improved by about 15% in the bending strength and 0.5RHA in hardness. The service life is more than doubled.
Rare earth magnesium alloy
Rare-earth magnesium alloys have higher specific strength, and have broad application prospects for reducing aircraft weight and improving tactical performance. The rare earth magnesium alloys developed by China National Aviation Industry Corporation include cast magnesium alloys and deformed magnesium alloys with about 10 grades. Many grades have been used for production and have stable quality. The solubility of rare earth elements in magnesium alloys is large, and therefore there is a significant heat treatment strengthening effect. The addition of metallic niobium and tantalum to cast and modified magnesium alloys significantly increases strength and process performance. At present, the cast magnesium alloys that have been industrially produced include ZM2, ZM4, and ZM6; the modified rare earth magnesium alloys include BM6 and BM25.
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