Ag-Cr-RE high-strength heat-resistant aluminium alloy material with C as modifier and preparation method thereof
An aluminum alloy material and heat-resistant technology, which is applied in the field of Ag-Cr-RE high-strength heat-resistant aluminum alloy material and its preparation, can solve the problems of reducing the quasi-solid phase temperature range of the alloy, poor quality, and large hot cracking tendency
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Embodiment 1
[0114] Example 1: Cu-1.0%, characteristic microalloying elements-Ag, Cr, basic microalloying rare earth element lanthanum La, high-efficiency modification element-C
[0115] (1) Weigh the various alloying elements required according to the ingredient calculation table, as follows.
[0116]
[0117] (2) Add an appropriate amount of aluminum ingots to the melting furnace, heat it to melt it completely and keep it warm at 700-800°C; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible in a closed environment Finish.
[0118] (3) Add Al-Mn, Al-Ti, Al-Ag, Al-Cr, Al-Zr master alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd master alloy or mixed metal additives, then add C and rare earth element La, and stir evenly.
[0119] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy...
Embodiment 2
[0125] Example 2: Cu-4.2%, characteristic microalloying elements Ag, Cr, basic microalloying rare earth elements La, Ce mixed rare earths, high-efficiency modification element-C
[0126] (1) Weigh the various alloying elements required according to the ingredient calculation table, as follows.
[0127]
[0128] (2) Add an appropriate amount of aluminum ingots to the melting furnace, heat it to melt it completely and keep it warm at 700-800°C; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible in a closed environment Finish.
[0129] (3) Add Al-Mn, Al-Ti, Al-Ag, Al-Cr, Al-Zr master alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd master alloy or mixed metal additives, then add C and rare earth elements La, Ce mixed rare earth, and stir evenly.
[0130] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy prod...
Embodiment 3
[0136] Example 3: Cu-5.1%, characteristic microalloying elements-Ag, Cr, basic microalloying rare earth element europium Eu, high-efficiency modification element-C
[0137] (1) Weigh the various alloying elements required according to the following ingredient calculation table, as follows.
[0138]
[0139] (2) Add an appropriate amount of aluminum ingots to the melting furnace, heat it to melt it completely and keep it warm at 700-800°C; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible in a closed environment Finish.
[0140] (3) Add Al-Mn, Al-Ti, Al-Ag, Al-Cr, Al-Zr master alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd master alloy or mixed metal additives, then add C and rare earth element europium Eu, and stir evenly.
[0141] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding a...
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