Reinforced aluminum matrix composite and preparation method thereof
A composite material and reinforced aluminum-based technology, which is applied in the field of aluminum-based composite materials, can solve the problems of particle agglomeration, weakening the reinforcement relative to the strengthening effect of aluminum-based composite materials, etc., and achieve the effect of promoting uniform distribution and overcoming segregation at grain boundaries
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Embodiment 1
[0025] Present embodiment 1 uses ceramic TiB 2 As the reinforcement phase, the reinforcement phase reactant chooses K 2 TiF 6 and KBF 4 2024 aluminum alloy is selected as the aluminum base alloy, and the raw materials of 2024 aluminum alloy include matrix and composite elements. The matrix is pure aluminum ingot with a purity of 99.95%, and the composite elements are copper, manganese, magnesium, and chromium with a purity of 99.95%. and zinc metal ingots, wherein the respective mass ratios of copper, manganese, magnesium, chromium, zinc and pure aluminum ingots are: copper: 3.8-4.9%, manganese: 0.30-1.0%, magnesium: 1.2-1.8%, chromium: 0.10% , Zinc: 0.25%, the balance is aluminum. In situ self-generated TiB in the preparation of 2024 aluminum alloy 2 The specific steps of the enhanced phase are as follows:
[0026] S1: Smelting the reinforcement phase reactants together with the raw materials of the aluminum-based alloy, so that the reinforcement phase reactants react ...
Embodiment 2
[0039] Present embodiment 2 uses intermetallic compound Mg 2 Si is used as the reinforcing phase, and aluminum-silicon alloy—Al-5Si alloy is selected as the aluminum-based alloy. The raw materials of the Al-5Si alloy include a matrix and composite elements. The matrix is pure aluminum ingot with a purity of 99.95%, and the composite element is selected to have a silicon content of 30%. % Al-Si master alloy. In Situ Autogenerated Mg During Preparation of Al-5Si Alloy 2 The concrete steps of Si reinforcement phase are as follows:
[0040] S1: Smelting the reinforcement phase reactants together with the raw materials of the aluminum-based alloy, so that the reinforcement phase reactants react inside the aluminum-based composite to form a reinforced phase, forming a reinforced aluminum-based composite melt.
[0041] First, put pure aluminum, pure magnesium and aluminum-silicon intermediate alloys into a box-type resistance furnace and reserve for more than 2 hours at 200-300°C...
Embodiment 3
[0049] In Example 3, TiB 2 / Mg 2 Si as reinforcement phase, TiB 2 / Mg 2 Reactant selection for Si reinforcement phase K 2 TiF 6 and KBF 4 The mixed salt and pure magnesium with a purity of 99.95%, silicon-aluminum master alloy. Choose aluminum-silicon alloy—Al-7Si alloy as the aluminum-based alloy. The raw materials of Al-7Si alloy include matrix and compound elements. The matrix is pure aluminum ingot with a purity of 99.95%, and the compound element is aluminum-silicon intermediate with a silicon content of 30%. alloy. In Situ Autogenerated TiB During Preparation of Al-7Si Alloy 2 / Mg 2 The concrete steps of Si reinforcement phase are as follows:
[0050] S1: Smelting the reinforcement phase reactants together with the raw materials of the aluminum-based alloy, so that the reinforcement phase reactants react inside the aluminum-based composite to form a reinforced phase, forming a reinforced aluminum-based composite melt.
[0051] First, according to the molar ra...
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Abstract
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