A kind of preparation method of die forging of Al-mg-Si series aluminum alloy that suppresses coarse grain structure
A technology of coarse-grain structure and aluminum alloy, which is applied in the field of aluminum alloy processing and preparation, can solve the problems of coarse-grain structure, large deformation of aluminum alloy die forgings, and high cumulative deformation energy, and achieve excellent fatigue resistance and anodic oxidation performance. Reduce strain energy storage and avoid the effect of high strain energy storage
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Embodiment 1
[0018]An Al-Mg-Si aluminum alloy with suppressed coarse grain structure, the alloy includes the following components: Mg 0.9%, Si 1.0%, Cu 0.19%, Fe 0.21%, Mn 0.11%, Zr 0.001%, Cr 0.20 %, Sc 0.001%, V 0.011%, Ti0.16%, and other unrestricted transition group elements whose content is less than 0.1%, the balance is Al and unavoidable impurities, except Fe element, the total of all other transition group elements The sum of content is controlled between 0.48%~0.51%, and [Fe]%+1.1[Mn]%≤0.33%, [Mn]%+3[Cr]%≤0.71%, and the content of other unavoidable impurity elements less than 0.02%, and the total content of unavoidable impurity elements is less than 0.09%.
[0019] The preparation method of the alloy die forging comprises the following steps:
[0020] Put the weighed industrial pure aluminum ingots into the melting furnace for melting treatment, heat the molten aluminum to 730°C~740°C, and add aluminum-based intermediate alloys to the melt according to the calculated addition amo...
Embodiment 2
[0027] An Al-Mg-Si series aluminum alloy die forging, the alloy selection includes the following components: Mg 0.8%, Si 1.3%, Cu 0.09%, Fe 0.11%, Mn 0.45%, Zr 0.15%, Cr 0.12% , Sc 0.08%, V 0.02%, Ti0.07%, and other unrestricted transition group elements whose content is less than 0.1%, the balance is Al and unavoidable impurities, except Fe element, the total content of all other transition group elements The sum is controlled between 0.79%~0.82%, and [Fe]%+1.1[Mn]%≤0.61%, [Mn]%+3[Cr]%≤0.81%, and the content of other unavoidable impurity elements is less than 0.03%, while the total content of unavoidable impurity elements is less than 0.12%.
[0028] The preparation method of the alloy die forging comprises the following steps:
[0029] Put the weighed industrial pure aluminum ingot into the melting furnace for melting treatment, heat the molten aluminum to 740°C~750°C, add aluminum-based intermediate alloys to the melt according to the calculated addition amount, and cover ...
Embodiment 3
[0037] A method for eliminating the coarse-grain structure of Al-Mg-Si series aluminum alloy die forgings. The alloy selection includes the following components: Mg0.8%, Si 0.7%, Cu 0.09%, Fe 0.13%, Mn 0.4%, Zr 0.15%, Cr 0.16%, Sc 0.012%, V0.02%, Ti 0.06%, and other unrestricted transition group elements whose content is less than 0.1%, the balance is Al and unavoidable impurities, except Fe element, all other transition group elements The sum of the total content is controlled between 0.85% and 0.91%, and [Fe]%+1.1[Mn]%≤0.57%, [Mn]%+3[Cr]%≤0.88%, and the rest of the unavoidable impurity elements The contents are all less than 0.02%, and the total content of unavoidable impurity elements is less than 0.08%.
[0038] The preparation method of the alloy die forging comprises the following steps:
[0039] According to the composition requirements of this example, the electrolytic aluminum liquid and aluminum-based intermediate alloy are put into the melting furnace for melting, ...
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