High-strength die-cast aluminum-titanium alloy

Abstract

The invention discloses a high-strength die-cast aluminum-titanium alloy. The alloy consists of the following components in percentage by weight: 18-34% of zinc, 3-8% of silicon, 2-7% of copper, 0.1-0.6% of manganese, 0.02-1% of titanium, 0.01-0.08% of gallium, 0.01-0.08% of cerium, and the balance of aluminum and reasonable impurities. The high-strength die-cast aluminum-titanium alloy has advantages of excellent fatigue resistance, crack propagation resistance, corrosion resistance and heat resistance.

Description

technical field [0001] The invention relates to a die-casting aluminum-titanium alloy, in particular to a high-strength die-casting aluminum-titanium alloy. Background technique [0002] Today's die-casting aluminum alloy technology is quite mature, but due to the simple geometry and low mechanical properties of die-casting aluminum alloy, the application range is limited to a certain extent. In order to meet the needs of large-scale production of general decorative parts with certain mechanical properties and good corrosion resistance, my country urgently needs high-strength die-cast aluminum-titanium alloys. [0003] Chinese patent document CN1084225 discloses an aluminum-titanium alloy used for locks and decorative materials, containing 0.50-1.20% (weight) of magnesium, 1.80-2.30% (weight) of manganese, 0.05-0.15% (weight) of titanium, and iron, The total amount of copper and zinc is less than 1.00% (by weight), and the rest is aluminum. The alloy has the characteri...

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Problems solved by technology

In actual use, if this aluminum-lithium alloy is used as a plate, its fatigue-free crack life is improved and the short crack growth rate is reduced. However, when it is used as a die-casting material, it does not perform very well in these two aspects. good

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