High-strength aluminum alloy for motor train unit gearbox and preparation method of high-strength aluminum alloy

Abstract

The invention discloses high-strength aluminum alloy for a motor train unit gearbox and a preparation method of the high-strength aluminum alloy. The high-strength aluminum alloy comprises the following components in percentage by weight: Mg, Cu, Zn, Fe, Si, Ti, Cr, Te, Ge, Nb, Er, Mo, Ce, Sc, Zr, Sr and the balance of Al, wherein content of each of other impurity elements is equal to or less than 0.05%, and total content of other impurity elements is equal to or less than 0.2%. According to the invention, the alloy components are reasonable, the technology is optimized, and the obtained high-strength aluminum alloy has the advantages of light weight, high strength, corrosion resistance, low possibility of cracking and the like and can meet the performance requirements of the motor train unit gearbox.

Description

technical field

[0001] The invention relates to the technical field of aluminum alloys, in particular to a high-strength aluminum alloy used for a gear box of an EMU and a preparation method thereof. Background technique

[0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. Since aluminum alloy has high strength and good processing and forming performance, in order to greatly reduce the weight of the component and improve the stability of the structure, it can be Choose to use aluminum alloy material instead of steel material. At present, aluminum alloy has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of industrial economy, the demand for aluminum alloys is increasing, and the research on aluminum alloys is also in-depth. my country's EMU gearboxes have poor strength, and the box is prone to cracks and other risks. Contents of t...