阅读说明：本技术 一种镁合金锻件及其制备工艺 (Magnesium alloy forging and preparation process thereof ) 是由 冯波 于 2019-10-25 设计创作，主要内容包括：本发明公开的一种镁合金锻件,包括按照质量百分比由以下组分组成：钼21～25％,铁16～20％,钯3～7％,锰0.2～0.3％,镍0.2～0.4％,钨0.1～0.4％,余量为镁,上述组分的质量百分比之和为100％。本发明一种镁合金锻件,通过在镁合金中添加一定比例的钼金属元素,能够有效利用钼金属高强度特点,同时配合其它微量元素锻造得到的锻件能够满足航空、航天等领域结构使用的材料要求。(The invention discloses a magnesium alloy forging which comprises the following components in percentage by mass: 21-25% of molybdenum, 16-20% of iron, 3-7% of palladium, 0.2-0.3% of manganese, 0.2-0.4% of nickel, 0.1-0.4% of tungsten and the balance of magnesium, wherein the sum of the mass percentages of the components is 100%. According to the magnesium alloy forging, the molybdenum metal element is added into the magnesium alloy in a certain proportion, so that the high-strength characteristic of the molybdenum metal can be effectively utilized, and meanwhile, the forging obtained by being matched with other trace elements for forging can meet the material requirements for structural use in the fields of aviation, aerospace and the like.)

1. The magnesium alloy forging is characterized by comprising the following components in percentage by mass: 21-25% of molybdenum, 16-20% of iron, 3-7% of palladium, 0.2-0.3% of manganese, 0.2-0.4% of nickel, 0.1-0.4% of tungsten and the balance of magnesium, wherein the sum of the mass percentages of the components is 100%.

2. The magnesium alloy forging of claim 1, wherein the molybdenum, iron, palladium, manganese, nickel, tungsten and magnesium are molybdenum powder, iron powder, palladium powder, manganese powder, nickel powder, tungsten powder and magnesium powder in sequence.

3. The magnesium alloy forging of claim 1, wherein the particle size of the magnesium powder is 300-500 meshes.

4. The process for preparing a magnesium alloy forging according to claim 1, comprising the following steps:

step 1: weighing 21-25% of molybdenum, 16-20% of iron, 3-7% of palladium, 0.2-0.3% of manganese, 0.2-0.4% of nickel, 0.1-0.4% of tungsten and the balance of magnesium according to mass percentage, wherein the sum of the mass percentages of the components is 100%;

step 2: placing the molybdenum powder, the iron powder, the palladium powder, the manganese powder, the nickel powder, the tungsten powder and the magnesium powder weighed in the step 1 in a ball milling tank, and placing the ball milling tank into a magnetic boat after ball milling for 2-5 hours;

and step 3: moving the magnetic boat in the step 2 into a roasting furnace, smelting at 3100-3500 ℃ for 2-4 h under the protection of inert gas, and cooling to room temperature to obtain an alloy body blank;

and 4, step 4: and (3) performing forming forging on the alloy body blank obtained in the step (3) at the temperature of 2050-2250 ℃ to obtain a forging.

5. The process for preparing a magnesium alloy forging according to claim 4, wherein the inert gas in the step 3 is nitrogen.

Technical Field

The invention belongs to the technical field of magnesium alloy processing, particularly relates to a magnesium alloy forging and also relates to a preparation process of the magnesium alloy forging.

Background

The magnesium alloy is an alloy formed by adding other elements on the basis of magnesium. The method is characterized in that: the density is small (1.8 g/cm)³Magnesium alloy, high strength, large elastic modulus, good heat dissipation, good shock absorption, larger impact load bearing capacity than aluminum alloy, and good organic matter and alkali corrosion resistance. Magnesium alloys have the lightest specific gravity among all structural alloys, and therefore, the weight of aluminum or iron parts can be reduced without reducing the strength of the parts. The specific strength of the magnesium alloy is obviously higher than that of the aluminum alloy and the steel, and the specific rigidity is equivalent to that of the aluminum alloy and the steel. Because the forged piece made of the magnesium alloy has a close-packed hexagonal lattice, the forged piece is an alloy with very low plasticity, and the strength of the existing magnesium alloy can not completely meet the requirements of the fields of aviation, aerospace and the like.

Disclosure of Invention

The invention aims to provide a magnesium alloy forging, which solves the problem of low strength of the existing magnesium alloy forging.

The invention also aims to provide a preparation process of the magnesium alloy forging.

The first technical scheme adopted by the invention is as follows: the magnesium alloy forging comprises the following components in percentage by mass: 21-25% of molybdenum, 16-20% of iron, 3-7% of palladium, 0.2-0.3% of manganese, 0.2-0.4% of nickel, 0.1-0.4% of tungsten and the balance of magnesium, wherein the sum of the mass percentages of the components is 100%.

The first technical solution of the present invention is also characterized in that,

the molybdenum, the iron, the palladium, the manganese, the nickel, the tungsten and the magnesium are sequentially molybdenum powder, iron powder, palladium powder, manganese powder, nickel powder, tungsten powder and magnesium powder.

The granularity of the magnesium powder is 300-500 meshes.

The second technical scheme adopted by the invention is as follows: a preparation process of a magnesium alloy forging comprises the following steps:

step 1: weighing 21-25% of molybdenum, 16-20% of iron, 3-7% of palladium, 0.2-0.3% of manganese, 0.2-0.4% of nickel, 0.1-0.4% of tungsten and the balance of magnesium according to mass percentage, wherein the sum of the mass percentages of the components is 100%;

step 2: placing the molybdenum powder, the iron powder, the palladium powder, the manganese powder, the nickel powder, the tungsten powder and the magnesium powder weighed in the step 1 in a ball milling tank, and placing the ball milling tank into a magnetic boat after ball milling for 2-5 hours;

and step 3: moving the magnetic boat in the step 2 into a roasting furnace, smelting at 3100-3500 ℃ for 2-4 h under the protection of inert gas, and cooling to room temperature to obtain an alloy body blank;

and 4, step 4: and (3) performing forming forging on the alloy body blank obtained in the step (3) at the temperature of 2050-2250 ℃ to obtain a forging.

The second technical solution of the present invention is also characterized in that,

the inert gas in step 3 is nitrogen.

The invention has the beneficial effects that: according to the magnesium alloy forging, the molybdenum metal element is added into the magnesium alloy in a certain proportion, so that the high-strength characteristic of the molybdenum metal can be effectively utilized, and meanwhile, the forging obtained by being matched with other trace elements for forging can meet the material requirements for structural use in the fields of aviation, aerospace and the like.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

The invention provides a magnesium alloy forging which is characterized by comprising the following components in percentage by mass: 21-25% of molybdenum, 16-20% of iron, 3-7% of palladium, 0.2-0.3% of manganese, 0.2-0.4% of nickel, 0.1-0.4% of tungsten and the balance of magnesium, wherein the sum of the mass percentages of the components is 100%. The molybdenum, the iron, the palladium, the manganese, the nickel, the tungsten and the magnesium are sequentially molybdenum powder, iron powder, palladium powder, manganese powder, nickel powder, tungsten powder and magnesium powder, and the particle size of the magnesium powder is 300-500 meshes.

The preparation process of the magnesium alloy forging comprises the following steps:

step 1: weighing 21-25% of molybdenum, 16-20% of iron, 3-7% of palladium, 0.2-0.3% of manganese, 0.2-0.4% of nickel, 0.1-0.4% of tungsten and the balance of magnesium according to mass percentage, wherein the sum of the mass percentages of the components is 100%;

step 2: placing the molybdenum powder, the iron powder, the palladium powder, the manganese powder, the nickel powder, the tungsten powder and the magnesium powder weighed in the step 1 in a ball milling tank, and placing the ball milling tank into a magnetic boat after ball milling for 2-5 hours;

and step 3: moving the magnetic boat in the step 2 into a roasting furnace, smelting at 3100-3500 ℃ for 2-4 h under the protection of nitrogen, and cooling to room temperature to obtain an alloy body blank;

and 4, step 4: and (3) performing forming forging on the alloy body blank obtained in the step (3) at the temperature of 2050-2250 ℃ to obtain a forging.

Through the mode, according to the magnesium alloy forging piece, the molybdenum metal element is added into the magnesium alloy in a certain proportion, the high-strength characteristic of the molybdenum metal can be effectively utilized, and meanwhile, the forging piece forged by matching with other trace elements can meet the material requirements for structural use in the fields of aviation, aerospace and the like.