KR20180106620A - High strength aluminium-zinc alloy and high strength aluminium-zinc alloy casting - Google Patents

Abstract

The present invention relates to high strength zinc-aluminum alloy, and comprises: 16.0-25.0 wt% aluminum (Al); 4.0-10.0 wt% of copper (Cu); more than 0.0 and equal to or less than 3.0 wt% magnesium (Mg); more than 0.0 and equal to or less than 1.0 wt% of titanium (Ti); more than 0.0 and equal to or less than 1.5 wt% of silicon (Si); more than 0.0 and equal to or less than 2.0 wt% of nickel (Ni); more than 0.0 and equal to or less than 3.0 wt% of iron (Fe); more than 0.0 and equal to or less than 1.0 wt% of Manganese (Mn); more than 0.0 and equal to or less than 0.05 wt% of a production inducing impurity; and remainder zinc (Zn).

Description

HIGH STRENGTH ZINC ALLOY AND HIGH STRENGTH ALUMINUM-ZINC ALLOY CASTING [0002]

(Al), 4.0 to 10.0 wt% of copper (Cu), more than 0.0 to 3.0 wt% of magnesium (Mg), more than 0.0 to less than 1.0 wt% of titanium (Ti), 0.0 (Si), more than 0.0 and less than 2.0 wt% nickel (Ni), more than 0.0 and less than 3.0 wt% iron (Fe), more than 0.0 and less than 1.0 wt% manganese (Mn) By weight, a production-inducing impurity in an amount of 1% by weight or less, and zinc (Zn) in the remainder.

In general, aluminum alloys are widely used as industrial materials in various fields such as automobile, civil engineering, construction, shipbuilding, chemical, aerospace and food. As a result, a zinc-aluminum alloy having increased strength has been developed.

Patent Document 10-1133103 relates to a high strength zinc-aluminum alloy for die casting, which comprises 5 to 9 wt% of zinc (Zn), 1 to 2 wt% of magnesium (Mg), 1 to 2 wt% of copper (Zr) of 0.05 to 0.2 wt%, titanium (Ti) of 0.05 to 0.2 wt%, and the balance of aluminum (Al) and impurities. However, since the aging treatment must be performed at 120 占 폚 for more than 24 hours, there is a problem that the production cost is increased and the productivity is lowered. And there is a problem that the mechanical strength is not sufficient even though the aging treatment is performed.

Patent Registration No. 10-1133103

(Al), 4.0 to 10.0 wt% of copper (Cu), 0.0 to 3.0 wt% of magnesium (Mg), and more than 0.0 and less than 1.0 (Ni), more than 0.0 and less than 3.0 wt% of iron (Fe), more than 0.0 and less than 1.0 wt% of titanium (Ti), more than 0.0 and less than 1.5 wt% By weight of manganese (Mn), more than 0.0 to 0.05% by weight of production-inducing impurities, and the balance of zinc (Zn), thereby improving the strength of the zinc- To minimize the effects of

In order to attain the above object, the present invention provides a method of manufacturing a semiconductor device, comprising the steps of: 16.0-25.0 wt% aluminum; 4.0-10.0 wt% copper; 0.0-3.0 wt% magnesium; (Si), more than 0.0 and less than 2.0 wt% nickel (Ni), more than 0.0 and less than 3.0 wt% iron (Fe), more than 0.0 and less than 1.0 wt% manganese ( Mn, a production inducing impurity of more than 0.0 and less than 0.05 wt%, and zinc (Zn) of the remainder.

Wherein the high strength zinc-aluminum alloy contains at least one selected from the group consisting of lead (Pb) in an amount of more than 0.0 to 0.05% by weight, phosphorus (P) in an amount of more than 0.0 and 0.05 or less by weight, and carbon (C) .

And a high-strength zinc-aluminum alloy casting is produced by casting with the high-strength zinc-aluminum alloy.

The high-strength zinc-aluminum alloy and the high-strength zinc-aluminum alloy casting according to the present invention exhibit excellent mechanical properties as can be seen from the results of the strength measurement described below. The high-strength zinc-aluminum alloy and high-strength zinc-aluminum alloy castings according to the present invention can be used for casting (squeeze casting, roast wax casting, thixocasting casting) products such as die casting, gravity casting and low pressure casting, It can be applied to the field of coatings and 3D printing by being manufactured in product or powder form.

The high strength zinc-aluminum alloy according to the present invention is a high strength zinc-aluminum alloy which comprises 16.0-25.0 wt% aluminum (Al), 4.0-10.0 wt% copper, 0.0-3.0 wt% magnesium, (Si), more than 0.0 and less than 2.0 wt% nickel (Ni), more than 0.0 and less than 3.0 wt% iron (Fe), more than 0.0 and less than 1.0 wt% manganese (Mn), a production inducing impurity of more than 0.0 to 0.05% by weight, and the balance of zinc (Zn). The high-strength zinc-aluminum alloy according to the present invention is composed of lead (Pb) in an amount of more than 0.0 to 0.05% by weight, phosphorus (P) in an amount of more than 0.0 and 0.05 or less by weight and carbon (C) , And < / RTI >

The features and functions of the constituent elements included in the high-strength zinc-aluminum alloy according to the present invention will be described.

Al (aluminum) has the effect of refining the crystal grains, improving fluidity and casting, facilitating processing, and exhibiting excellent mechanical properties.

Cu (copper) has the effect of improving the strength and minimizing the influence of impurities.

Mg (Magnesium) has the effect of improving the strength and minimizing the influence of the impurities, but the content exceeding 3% is limited because of the phenomenon of decreasing the elongation.

Ti (titanium) has an effect of preventing deformation due to stress.

Si (silicon) has the effect of enhancing the strength by forming magnesium and Mg ₂ Si.

Ni (nickel) is effective for improving corrosion resistance.

Fe (iron) is effective in improving the adhesion, but is limited to a maximum of 3.0 wt%.

Mn (manganese) has an effect of improving the strength.

The high-strength zinc-aluminum alloy and high-strength zinc-aluminum alloy castings according to the present invention can be used as casting (squeeze casting, roast wax casting, thixocasting casting) products such as die casting, gravity casting and low pressure casting, mold casting products, And can be applied to the coating field and the 3D printing field.

To evaluate the mechanical properties of the high-strength zinc-aluminum alloy according to the present invention, a sample was prepared and the strength was measured as follows. Each element was weighed in an electronic balance, placed in a graphite crucible, and melted with a high frequency induction heating device to make an alloy, which was then cast using a mold mold. Compression specimens having a diameter of 3 mm and a length of 7.5 to 8 mm were processed on a lathe from a casting preparation and subjected to a compression test at a crossheading speed of 0.05 m / min in an universal testing machine to measure compression strength and elongation.

Table 1 shows the composition of the high-strength zinc-aluminum alloy according to the embodiment of the present invention in weight percent.

Sample number Al Cu Mg Ti Si Ni Fe Mn Zn 01 16.5 9.0 1.00 0.50 1.50 0 0 0 Remainder 02 20.0 8.0 3.00 0.50 1.50 0 0 0 Remainder 03 25.0 4.0 0.50 0.50 1.50 0.5 0 0 Remainder 04 25.0 9.0 1.00 0.50 1.50 0 0 0 Remainder 05 14.0 10.0 0.10 0.10 2.00 0 0 0 Remainder 06 20.0 9.0 1.00 0.50 1.50 0 0 0 Remainder 07 25.0 9.0 3.50 0.50 1.00 0 0 0 Remainder 08 24.5 4.0 0.90 0.48 1.00 2.0 1.0 1.0 Remainder 09 20.0 10.0 2.00 0.50 1.50 0 0 0 Remainder 10 16.5 10.0 2.00 0.50 1.50 0 0 0 Remainder 11 17.0 8.0 2.00 0.50 1.50 0 0 0 Remainder 12 25.0 4.0 3.00 0.50 1.50 0 0 0 Remainder 13 16.5 4.0 2.00 0.50 1.50 0 0 0 Remainder 14 24.8 3.9 0.85 0.48 1.51 1.1 0.9 1.0 Remainder 15 20.0 8.0 1.00 0.50 1.50 0.9 1.0 1.1 Remainder

Table 2 shows the results of measuring the compressive strength and elongation of the high-strength zinc-aluminum alloy according to the present invention.

Sample number Compressive strength (MPa) Elongation (%) 01 712.3 18.1 02 835.7 13.3 03 631.5 17.4 04 754.7 14.6 05 301.4 12.5 06 745.2 15.9 07 844.2 3.7 08 632.2 23.9 09 779.8 13.3 10 773.3 13.3 11 776.5 13.0 12 760.6 14.2 13 709.0 15.8 14 640.4 17.1 15 630.0 13.8

The compression strength is a value of 630 MPa or more, and the elongation is 10.0% or more.

The embodiments of the present invention described above should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

Claims (3)

(Al), 4.0 to 10.0 wt% of copper (Cu), 0.0 to 3.0 wt% of magnesium (Mg), 0.0 to 1.0 wt% of titanium (Ti), and more than 0.0 to 1.5 wt% (Ni), more than 0.0 and not more than 3.0 wt% of iron (Fe), more than 0.0 and less than 1.0 wt% of manganese (Mn), more than 0.0 and less than 0.05 wt% And zinc (Zn) in the remainder. The high-strength zinc-aluminum alloy according to claim 1, The high-strength zinc-aluminum alloy according to claim 1, wherein the high-strength zinc-aluminum alloy comprises lead (Pb) in an amount of more than 0.0 to 0.05 percent by weight, phosphorus (P) in an amount of more than 0.05 and less than 0.05 percent by weight, ≪ / RTI > further comprising at least one selected from the group consisting of zinc, aluminum, and combinations thereof. A high strength zinc-aluminum alloy casting produced by casting with the high strength zinc-aluminum alloy of claim 1 or 2.