Mg-Zn-Y-Nd-Ti-Zr cast magnesium alloy with low thermal cracking sensitivity and high strength and toughness
A casting magnesium alloy and sensitive technology, applied in the field of casting magnesium alloys, can solve the problems of low yield of castings and large tendency of hot cracking, and achieve the effects of reducing content, weakening stress, and promoting refinement
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Embodiment 1
[0025] A high-strength and tough Mg-Zn-Y-Nd-Ti-Zr alloy with low thermal cracking sensitivity contains the components and their nominal mass percentages: 4.5wt.% Zn, 1wt.% Y, 2wt.% Nd , 0.5wt.% Ti and 0.5wt.% Zr, and the rest are Mg and unavoidable impurity elements. The concrete manufacturing method of this alloy is carried out as follows:
[0026] (1) Considering burning loss, according to the following mass percentage content 5wt.%Zn, 1.2wt.%Y, 2.2wt.%Nd, 0.6wt.%Ti and 0.8wt.%Zr and the balance are Mg, weigh Pure Mg, pure Zn, pure Ti (powder or chips), and master alloys Mg-25Y (wt%), Mg-25Nd (wt%), Mg-30Zr (wt%).
[0027] (2) The temperature of the smelting furnace is raised to 750° C., and smelted in an electric furnace under the protection of 99.8% N2 and 0.2% SF6 mixed gas. Blow in argon to stir and remove slag, after standing still for 30-50 minutes, take a sample and use x-ray spectrum to detect its actual composition: 4.7wt.%Zn, 1.1wt.%Y, 1.9wt.%Nd, 0.5wt .%Ti and ...
Embodiment 2
[0032] A high-strength and tough Mg-Zn-Y-Nd-Ti-Zr alloy with low thermal cracking sensitivity contains the components and their nominal mass percentages: 4.5wt.% Zn, 1wt.% Y, 2wt.% Nd , 0.5wt.% Ti and 0.5wt.% Zr, and the rest are Mg and unavoidable impurity elements. The concrete manufacturing method of this alloy is carried out as follows:
[0033] (1) Considering burning loss, according to the following mass percentage content 5wt.%Zn, 1.2wt.%Y, 2.2wt.%Nd, 0.6wt.%Ti and 0.8wt.%Zr and the balance are Mg, weigh Pure Mg, pure Zn, pure Ti (powder or chips), and master alloys Mg-25Y (wt%), Mg-25Nd (wt%), Mg-30Zr (wt%);
[0034] (2) Raise the temperature of the smelting furnace to 750°C, under 99.8%N 2 and 0.2% SF 6 Melted in an electric furnace under the protection of mixed gas. Blow in argon to stir and remove slag, after standing still for 30-50 minutes, take a sample and use x-ray spectrum to detect its actual composition: 4.8wt.%Zn, 0.9wt.%Y, 2.0wt.%Nd, 0.5wt .%Ti and 0....
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