Casting magnesium alloy with high strength and toughness and preparation method thereof
A casting magnesium alloy, high-strength and high-toughness technology, applied in the field of metal material magnesium alloy, can solve the problems of high cost, unsuitable preparation of high-performance structural parts, difficulty in adding Zr elements, etc., to achieve increased strength, excellent aging strengthening ability, enhanced Effect of Age Hardening Ability
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[0025] Example 1
[0026] In this embodiment, the components of the high-strength and high-toughness cast magnesium alloy and their weight percentages are: 8.0% Zn, 0.5% Al, 0.5% Cu, 0.5% Mn, and the rest are Mg and inevitable impurity elements. The impurity element content <0.01%.
[0027] The preparation method is as follows:
[0028] (1) Ingredients: the raw materials are metal Mg, metal Zn, metal Al, metal Cu and Mg-10wt.%Mn master alloy. The alloy components and their weight percentages are: 8.0% Zn, 0.5% Al, 0.5% Cu, 0.5% Mn, the rest is Mg;
[0029] (2) Melting: using iron crucible, smelting in a resistance furnace, controlling the smelting temperature to 740℃, using CO 2 And SF 6 Mixed as a protective gas (based on volume percentage, 99% CO 2 +1%SF 6 ), the raw materials are preheated at 200℃, first add the metal Mg, after the metal Mg is completely melted, add the metal Cu, smelt for 15 minutes, then add the Mg-Mn master alloy, smelt for 15 minutes, and finally add the metal ...
Example Embodiment
[0033] Example 2
[0034] In this embodiment, the components of the high-strength and high-toughness cast magnesium alloy and their weight percentages are: 8.0% Zn, 1.0% Al, 0.5% Cu, 0.5% Mn, and the rest are Mg and inevitable impurity elements. The impurity element content <0.01%.
[0035] The preparation method is as follows:
[0036] (1) Ingredients: The raw materials are metal Mg, metal Zn, metal Al, metal Cu and Mg-10wt.%Mn master alloy. The alloy components and their weight percentages are: 8.0% Zn, 1.0% Al, 0.5% Cu, 0.5% Mn, the rest is Mg;
[0037] (2) Melting: using iron crucible, smelting in a resistance furnace, controlling the smelting temperature to 740℃, using CO 2 And SF 6 Mixed as a protective gas (based on volume percentage, 99% CO 2 +1%SF 6 ), the raw materials are preheated at 200℃, first add the metal Mg, after the metal Mg is completely melted, add the metal Cu, smelt for 15 minutes, then add the Mg-Mn master alloy, smelt for 15 minutes, and finally add the metal ...
Example Embodiment
[0043] Example 3
[0044] In this embodiment, the components and weight percentages of the high-strength and high-toughness cast magnesium alloy are: 8.0% Zn, 0.5% Al, 1.0% Cu, 0.5% Mn, and the rest are Mg and unavoidable impurity elements. The impurity element content <0.01%.
[0045] The preparation method is as follows:
[0046] (1) Ingredients: the raw materials are metal Mg, metal Zn, metal Al, metal Cu and Mg-10wt.%Mn master alloy. The alloy components and their weight percentages are: 8.0% Zn, 0.5% Al, 1.0% Cu, 0.5% Mn, the rest is Mg;
[0047] (2) Melting: using iron crucible, smelting in a resistance furnace, controlling the smelting temperature to 750℃, using CO 2 And SF 6 Mixed as a protective gas (based on volume percentage, 99% CO 2 +1%SF 6 ), the raw materials are preheated at 200℃, first add the metal Mg, after the metal Mg is completely melted, add the metal Cu, smelt for 15 minutes, then add the Mg-Mn master alloy, smelt for 15 minutes, and finally add the metal Zn an...
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