High-strength anti-fatigue aluminum alloy and preparation method thereof

Abstract

The invention discloses a high-strength anti-fatigue aluminum alloy and a preparation method thereof. The alloy is prepared from, by mass percent, 3.6%-4.1% of Cu, 0.6%-1.1% of Mg, 0.57%-0.69% of Mn,0.35%-0.72% of Ti+La, 0.15%-0.31% of Ni, 0.41%-0.53% of Fe, 0.11%-0.27% of Si, 0.04%-0.13% of Zr, 0.12%-0.26% of Ce, 0.1%-0.18% of W, 0.12%-0.19% of Y, 0.32%-0.46% of Ge, 0.03%-0.12% of Sn, 0.16%-0.29% of Pr+Nd+Er, 0.05%-0.09% of V and the balance Al. The preparation of the aluminum alloy is simple in process, and the obtained aluminum alloy is high in strength, good in toughness and excellent inheat stability and fatigue resistance.

Description

technical field [0001] The invention relates to the technical field of aluminum materials, in particular to a high-strength anti-fatigue aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy is a general term for alloys with aluminum as the matrix element. As the most widely used non-ferrous metal structural material in the industry, it has low density, high strength, good plasticity, easy processing, corrosion resistance, electrical conductivity, thermal conductivity and corrosion resistance. Excellent, easy surface coloring, recyclable regeneration and other advantages, has been widely used in aviation, aerospace, automobiles, construction packaging, ships and chemical industries and other fields. With the rapid development of science and technology and industrial economy in recent years, new requirements have been put forward for the performance of materials, and aluminum alloy profiles are facing unprecedented challenges. There ar...