Aluminum alloy is widely used in high-speed rail construction, right?

It is correct that a large number of aluminum alloys are used in high-speed rail construction. Don't worry, some occasions that don't require high mechanical strength can use aluminum alloy, which is corrosion-resistant and won't rust. In addition, there are many kinds of aluminum alloys with different properties, and some aluminum alloys can meet higher requirements.

Aluminum alloy is the most widely used non-ferrous metal structural material in industry. It 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 alloy welded structural parts is increasing, which makes the research on aluminum alloy weldability deepen. At present, the most widely used alloy is aluminum alloy.

material characteristics

Aluminum alloy has low density, but its strength is relatively high, close to or higher than that of high-quality steel. Good plasticity, can be processed into various profiles, and has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel. Some aluminum alloys can obtain good mechanical properties, physical properties and corrosion resistance through heat treatment. Hard aluminum alloy belongs to al-Cu-Mg system, generally containing a small amount of Mn, which can be strengthened by heat treatment. It is characterized by high hardness but poor plasticity. Ultra-hard aluminum belongs to Al-Cu-Mg-Zn system and can be strengthened by heat treatment. It is the aluminum alloy with the highest strength at room temperature, but it has poor corrosion resistance and softens quickly at high temperature. Deformed aluminum alloy is mainly aluminum-zinc-magnesium-silicon alloy. Although there are many kinds of elements added, the content is very small, so it has excellent thermoplasticity and is suitable for forging, so it is also called forged aluminum alloy.