Mo-Nb-RE high-strength heat-resistant aluminium alloy material and preparation method thereof
An aluminum alloy material and mo-nb-re technology are applied in the field of aluminum alloy materials with micro-alloying elements and rare earth elements and their preparation fields, and can solve the problems of poor casting performance, low high-temperature strength of products, and reduction of alloy quasi-solid temperature range. And other issues
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Embodiment 1
[0102] Example 1: Cu-1.0%, characteristic microalloying elements-Mo, Nb, basic microalloying rare earth elements-lanthanum La
[0103] (1) Weigh the various alloying elements required according to the ingredient calculation table, as follows.
[0104]
[0105] (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.
[0106] (3) Add Al-Mn, Al-Ti, Al-Mo, Al-Nb, Al-Zr master alloys 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 B and rare earth element La, and stir evenly.
[0107] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy components, including manganese, copp...
Embodiment 2
[0113] Example 2: Cu-4.2%, characteristic microalloying elements-Mo, Nb, basic microalloying rare earth elements La, Ce mixed rare earth
[0114] (1) Weigh the various alloying elements required according to the ingredient calculation table, as follows.
[0115]
[0116] (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.
[0117] (3) Add Al-Mn, Al-Ti, Al-Mo, Al-Nb, Al-Zr master alloys 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 B and rare earth elements La, Ce mixed rare earth, and stir evenly.
[0118]Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy compo...
Embodiment 3
[0124] Example 3: Cu-5.1%, characteristic microalloying elements-Mo, Nb, basic microalloying rare earth element Eu
[0125] (1) Weigh the various alloying elements required according to the following ingredient calculation table, as follows.
[0126]
[0127] (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.
[0128] (3) Add Al-Mn, Al-Ti, Al-Mo, Al-Nb, Al-Zr master alloys 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 B and rare earth element Eu, and stir evenly.
[0129] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy components, including manganese, coppe...
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