WO2014106989A1

WO2014106989A1 - Method for manufacturing extruded magnesium alloy and extruded magnesium alloy manufactured thereby

Info

Publication number: WO2014106989A1
Application number: PCT/KR2013/009795
Authority: WO
Inventors: 박성혁; 유봉선; 김하식; 문병기; 배준호; 김영민; 임창동
Original assignee: 한국기계연구원
Priority date: 2013-01-04
Filing date: 2013-10-31
Publication date: 2014-07-10
Also published as: US20150315690A1

Abstract

The present invention relates to a method for manufacturing an extruded magnesium alloy and an extruded magnesium alloy manufactured thereby. The present invention specifically relates to a method for manufacturing an extruded magnesium alloy which comprises a step (first step) of melting a starting material of a magnesium alloy; a step (second step) of casting the magnesium alloy starting material melted in the first step in order to prepare a magnesium alloy billet; a step (third step) of subjecting the magnesium alloy billet prepared in the second step to a homogenization treatment; a step (fourth step) of allowing the magnesium alloy billet homogenized in the third step to undergo compressive strain in the range of 3 to 20%; and a step (fifth step) of extruding the magnesium alloy billet which underwent compressive strain in the fourth step; and an extruded magnesium alloy manufactured thereby.

Description

【Specification】

[Name of invention]

Manufacturing method of magnesium alloy extruded material and magnet alloy extruded material produced accordingly

Technical Field

The present invention relates to a method for producing a magnesium alloy extruded material and to a magnesium alloy extruded material prepared according to the present invention, specifically, a magnet with improved strength and elongation from a conventional extrusion method by performing compressive deformation in a predetermined amount on a homogenized billet. It relates to a method of manufacturing an alloy extrusion.

Background Art

<2> In order to increase the efficiency of transportation equipment, environmental pollution caused by exhaust gas and various environmental regulations, researches on weight reduction of all products and development of new materials are being actively conducted. The main target materials are light metals such as aluminum and magnesium and alloys thereof, and their use is increasing as a new material for transportation equipment that requires high specific strength.

<3>

<4> Magnesium alloy is the lightest metal material with the lowest density among the structural materials available, and it is a material that is in the spotlight due to its high specific strength and excellent properties such as mechanical workability, electromagnetic shielding, and vibration absorption ability. In addition, the alloy ratio can be adjusted for each application to be used for special purposes. Therefore, research is being actively conducted for various fields such as automobile parts, aviation parts, and portable electronic devices.

Magnesium alloy parts are produced by casting and by casting, casting, or forging a cast billet or slab into a secondary molded product. Among the casting methods, sand casting, thick casting, precision casting, die casting, and semi-molding molding techniques are used. Most magnesium alloy parts are manufactured by die casting. However, when forming magnesium alloy by casting, it has good ductility but many internal defects such as shrinkage pores, and because the surface is very rough, aftertreatment is required and high quality alloy is required. Not suitable for manufacturing the product. Therefore, in order to use the magnet alloy and expand the field of application, the manufacturing technology as a processing material such as a rolled material, an extruded material, and a forged material, which have excellent mechanical properties, is essential. All .

<6> Although magnesium alloy workpiece has better strength and ductility than cast material, it has lower mechanical properties compared to commercial aluminum alloy workpiece, adding alloying elements, applying powder metallurgy, and controlling processing conditions. Many efforts are underway to improve the strength and ductility of magnesium alloy workpieces through the method.

For example, as a method for improving the strength of a conventional magnesium alloy, Korean Patent Publication No. 10-2008-0085662 (published date: 2008.09.24) describes the mechanical strength of a magnet alloy. As a method for improving, a method of controlling a composition of a magnesium alloy and combining a die casting casting and a plastic processing is disclosed. In addition, the Republic of Korea Patent Publication No. 10-2012-0095184 (published: 2012.08.28) discloses a method for adjusting the composition of the magnesium alloy as a method for improving the mechanical strength and ductility of the magnesium alloy extrusion material, As described above, a method of simultaneously improving the strength and ductility by performing compressive deformation in a predetermined amount on the homogenized magnesium alloy billet before extrusion has not been disclosed.

<8>

Therefore, the present inventors performed compression deformation treatment to a specific range of the homogenized magnesium alloy billetol, which was studied to prepare a method for producing a magnetite alloy extruded material having excellent strength and ductility, followed by extrusion. The method of manufacturing the magnesium alloy extruded material has been completed by finding a simple method of manufacturing a magnesium alloy extruded material having improved ductility while improving mechanical strength by adding a simple compression deformation process to the general extrusion method.

[Detailed Description of the Invention]

[Technical problem]

An object of the present invention is to provide a method for producing a magnesium alloy extruded material.

Another object of the present invention is to provide a magnesium alloy extruded material produced according to the manufacturing method.

Technical Solution

To solve the above problems, the present invention

<13> melting a raw material of magnesium alloy (step 1);

Casting a raw material of the magnesium alloy melted in step 1 to produce a magnesium alloy billet (step 2);

<15> Homogenizing the magnet alloy billet prepared in step 2 (step 3);

<16> compression deformation of the homogenized magnesium alloy bilmette of step 3 in the range of 3-20% (step 4); and

It provides a method of manufacturing a magnet alloy extruded material comprising the step (step 5) of extruding the compression-deformed magnet alloy billet of step 4.

<18>

In addition, the present invention provides a magnet alloy extrusion material produced by the above production method.

In addition, the present invention provides an airborne part manufactured using the magnesium alloy extruded material.

Advantageous Effects

In the manufacturing method of the magnesium alloy extruded material according to the present invention, after compressive deformation treatment of the homogenized magnesium alloy billet is carried out in a specific range, the extruded material is extruded to produce a magnesium alloy extruded material, which is a simple compression deformation process in the general extrusion method By adding the mechanical strength and ductility at the same time there is an advantage that can be produced by a simple method of magnesium alloy extruded material.

[Brief Description of Drawings]

1 is a simplified view showing a method of manufacturing a magnesium alloy extruded material according to the present invention.

¾.

Figure 2 is a result of analyzing the magnesium alloy billet before and after room temperature compression deformation using an optical microscope.

3 is a result of analyzing the magnesium alloy billet before and after room temperature compression deformation using an optical microscope.

4 is an inverse pole viscosity map of the AZ31 alloy after room temperature compression deformation according to the present invention.

Electron back scattered diffraction (EBSD) analysis showing inverse pole figure maps and twin boundary maps.

FIG. 5 shows electron backscattering diffraction (EBSD) showing an inverse pole figure map and a grain size distribution of the magnesium extruded materials of Example 1 and Comparative Example 1 according to the present invention. electron back scattered diffract ion analysis.

FIG. 6 shows the results of analyzing the magnesium alloy extruded materials of Examples 1 to 3 and Comparative Examples 1 to 3 according to the present invention using an optical microscope. 7 is a result of analyzing the magnesium alloy extruded material of Examples 4 to 6 and Comparative Examples 4 to 6 according to the present invention using an optical microscope.

[Best form for implementation of the invention]

Hereinafter, the present invention will be described in detail.

<30>

As shown in FIG. 1, the present invention provides a

Melting the raw material of the magnesium alloy (step 1);

Homogenizing the magnesium alloy billet prepared in step 2 (step

3);

Compressing and straining the homogenized magnesium alloy billet of step 3 in the range of 3-20% (step 4); and

It provides a method for producing a magnesium alloy extruded material comprising the step (step 5) of extruding the compression-modified magnesium alloy billet of step 4.

<37>

Hereinafter, the manufacturing method of the magnesium alloy extruded material according to the present invention will be described in detail for each step. ^'

<39>

In the manufacturing method of the magnesium alloy extruded material according to the present invention, the step 1 is a step of melting the raw material of the magnesium alloy.

The raw material of the magnet alloy can be used without limitation as long as the commercial magnet alloy. The present invention is a technology using a point that twins are easily generated due to the lack of a slim system at room temperature deformation is applicable to all magnesium alloys regardless of the composition. That is, the magnesium alloy raw material may use a magnesium pure metal or a magnesium alloy, and may be used without limitation in composition.

<42>

In addition, the present invention is not only a magnet alloy, but also titanium (Ti), zinc (), cobalt (Co) having a dense hexagonal structure (Hexagonal close packed (HCP)) that is easily generated due to deformation. The same can be applied to alloys, etc.

<44>

Next, in the method for producing a magnesium alloy extruded material according to the present invention, Step 2 is to prepare a magnesium alloy billet by casting the raw material of the molten magnesium alloy melted in step 1.

In the step 2, it is preferable to cast the raw material of the molten magnesium alloy of the step 1 (hereinafter referred to as molten metal alloy ᅳ) at 650-750 ^° C. At this time, when casting the magnesium alloy molten metal less than 650 V, there is a problem that the casting of the magnesium alloy molten metal is difficult to cast low. In addition, when the magnesium alloy molten metal is cast in excess of 750 ° C, the magnesium alloy molten metal is rapidly oxidized and impurities may be mixed during casting, thereby lowering the purity of the magnesium alloy billet manufactured therefrom.

<47>

In this case, the method of casting the magnesium alloy molten metal is not particularly limited as long as it is a method commonly used in the art, for example, gravity casting, continuous casting, sand casting, pressurized casting can be used.

<49>

Next, in the method for producing a magnesium alloy extruded material according to the present invention, step 3 is a step of homogenizing the magnesium alloy billet prepared in step 2.

The homogenization can improve the heterogeneous structure due to segregation of alloy elements generated in the casting of magnesium alloy moltenol, and improve the high temperature workability and mechanical properties of the magnesium alloy. The homogenization of the magnesium alloy billet is preferably carried out by a cooling process after performing a heat treatment process at 300-550 ^° C for 0.5-96 hours, the homogenization treatment temperature range is a magnesium alloy billet. Can be appropriately selected by those skilled in the art according to the type of member.

For example, in the case of Mg-Sn-based alloy, it is preferable to treat it as homogenization at 400-550. When the magnesium alloy billet is carried out at less than 400 ^° C, the content of tin dissolved in the magnesium matrix is small, so that the strengthening effect of the alloy due to dynamic precipitation during high temperature plastic processing such as extrusion, rolling, forging, etc. is not significant. Since the coarse Mg ₂ Sn phase generated during the casting process is not removed sufficiently, the ductility of the magnesium alloy may be lowered.

<53>

In addition, in the case of homogenizing the magnesium alloy billet above 550 ^° C., the magnesium alloy has a higher homogenization treatment temperature compared to the solidus temperature of the magnesium alloy. There is a problem that the local dissolution of the billet may occur and the physical properties may be lowered.

<55>

Furthermore, when the homogenization treatment of the magnesium alloy billet is performed in the temperature range for less than 0.5 hour, diffusion of the alloying elements does not sufficiently occur, so that the effect of the homogenization treatment does not appear. In addition, when the homogenization treatment of the magnesium alloy billet is performed for more than 96 hours, the increase in the effect against the execution time is not so large that it is not economical.

<57>

Next, in the method for producing a magnesium alloy extruded material according to the present invention, the step 4 is a step of compressively deforming the homogenized magnesium alloy billet of the step 3 in the range of 3-20%.

The compressive strain forms twins in the homogenized magnet alloy material. In the magnesium alloy having a close hexagonal structure, twins play an important deformation mechanism at room temperature of the magnesium alloy. At this time, the twin formed through the compression deformation acts as a region in which recrystallization occurs in the subsequent extrusion step to increase the recrystallization fraction to create a homogeneous and fine structure to improve the strength of the magnesium alloy. In addition, the fraction of the large, non-recrystallized crystal grains, which easily generate cracks during tensile deformation, decreases soft ducts, and is greatly reduced by extrusion after performing compression deformation, thereby improving strength as well as elongation.

<60>

The compressive deformation of the magnesium alloy billet homogenized in step 3

Preference is given to performing in the 20% range. In this case, when compressive deformation of the homogenized magnesium alloy billet is performed at less than 3%, only a very small amount of twins are formed in the magnesium alloy billet, thereby increasing the strength and elongation of the magnesium alloy extruder manufactured therefrom. There is a problem that is difficult to expect improvement. In addition, when the compressive deformation is performed in excess of 20%, defects such as cracking and cracking may occur in the magnesium alloy billet. The compression deformation may be carried out by appropriately selecting the compression deformation range of the skilled person according to the composition of the magnesium alloy. The compression deformation may be performed in any direction with respect to the magnesium alloy billet, and those skilled in the art may appropriately select the compression deformation direction according to the shape and extrusion conditions of the billet.

<62>

On the other hand, the compression deformation of the step 4 is carried out in a temperature range of room temperature to 250 ^° C. Can be. If the compression deformation is performed at a temperature lower than room temperature, a defect such as cracking or cracking may occur in the magnet alloy billet while the material is hardened to perform compression deformation. In addition, when the compression deformation is performed ^at a temperature exceeding 250 ^° C. non-base slip is activated to form twins, and thus it is difficult to expect an improvement in strength and elongation of the magnesium alloy extruded material. have.

In this case, the "room temperature" described as the temperature at which the compressive deformation may be performed means a normal temperature at which the heating is not particularly performed and is defined as a temperature range of about 0 to 50 ^° C. For example, it may be a temperature of about 20 ^° C 5 ^° C.

<65>

The manufacturing method of the magnesium alloy extruded material according to the present invention does not require a new device and equipment except for a device for performing compression deformation. Therefore, there is an advantage that can be immediately applied to the process of manufacturing a magnesium alloy extruded material using a conventional extrusion method.

<67>

Next, in the method of manufacturing a magnesium alloy extruded material according to the present invention, the step 5 is a step of extruding the compression-modified magnesium alloy billet of the step 4.

In the present invention, the extrusion is preferably carried out after preheating at 150-450 ^° C to smoothly perform the extrusion of the compression-modified magnesium alloy billet of the step 4. At this time, when the preheating temperature of the compression-modified magnesium alloy billet is less than 150 ° C, there is a problem that excessive extrusion force is required during extrusion of the compression-deformed magnet alloy billet. In addition, when the pre-heating temperature exceeds 450 ^° C, there is a problem that the strength of the magnesium alloy extruded material produced by the coarse growth of crystals in the magnet alloy decreases, and in some alloys due to the high extrusion temperature depending on the alloy composition There is a problem in that local melting occurs and surface defects occur.

<70>

In this case, the extrusion may use direct extrusion, indirect extrusion, continuous extrusion, etc., but is not limited thereto, and may be appropriately selected according to the purpose or the purpose of those skilled in the art.

<72>

In addition, the method for producing a magnesium alloy extruded material according to the present invention is carried out in step 4 above. The method may further include processing the magnet alloy billet in a form suitable for performing compression deformation and extrusion.

<74>

Furthermore, the method for producing a magnesium alloy extruded material according to the present invention may further perform the step of aging after step 5. However, in the present invention, the aging treatment is only optional. Even if the aging treatment is not performed, the magnesium alloy extruded material having improved strength and ductility can be manufactured.

<76>

Through the aging treatment, alloy elements other than magnesium contained in magnesium atoms are precipitated in grain boundaries or grain boundaries, thereby further enhancing the strength of the magnesium alloy extruded material due to the precipitation strengthening effect.

For example, the aging treatment can be performed at 150-250 ^° C for 1-360 hours. In this case, when the aging treatment is performed at less than 150, there is a problem that the magnesium alloy takes a long time to reach the maximum strength, which is not economical. In addition, when the aging treatment is carried out in excess of 250 ^° C it is possible to shorten the time it takes for the magnesium alloy to reach the maximum strength, but the strength of the magnesium alloy is low because the precipitated phase is coarse There is a problem.

<79>

In addition, the present invention provides a magnet alloy extruded material produced by the manufacturing method.

In general, the properties of magnesium alloys are determined by the product of tensile strength and total elongation (TSXEL). In general, as the tensile strength of the metal material increases, the elongation decreases, and when the elongation increases, the tensile strength tends to decrease. Therefore, by using the TSX EL value of the magnet alloy, the magnesium alloy can be judged from two aspects of strength and ductility. In this case, the magnesium alloy having a large TSXEL value may be determined to have excellent tensile properties. The value may be determined to be excellent in toughness because it is proportional to the amount of energy absorbed by the metal material during fracture.

<82>

In addition, the present invention provides a component for transportation equipment manufactured using the magnesium alloy extruded material.

The magnesium alloy extruded material manufactured by extruding the homogenized magnesium alloy billet according to the present invention after compressive deformation treatment to a specific range has a TSXEL value of about 3-. Increasing the strength by 32%, the overall tensile properties are not just improved, but it is expected to be widely used in various industrial fields including the transportation equipment industry such as aircraft and the electronic parts industry.

<85>

In particular, magnesium extruded materials can exhibit excellent properties such as machinability, electromagnetic shielding, and vibration absorbing ability as well as high specific strength, and thus can be manufactured as aviation components requiring specific strength and sophisticated processing.

[Form for implementation of invention]

Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following examples are only for the description of the present invention and the scope of the present invention is not limited by the following examples.

<88>

Example 1-6 Preparation of Magnet Alloy Extruded Material

Step 1. Melting the raw material of the magnesium alloy

Pure Mg (99.9 weight «, Pure Sn (99.9 weight%). Pure AK99.9 weight%), pure Zn (99.995 weight ¾), pure Z 99.99 weight%), pure Cu (99.997 weight%). The magnesium alloy was dissolved in a crucible by using a high frequency induction melting furnace. A mixed gas of SF ₆ and CO ₂ was applied to the molten magnesium alloy (magnesium alloy molten metal) to block contact with the atmosphere to prevent oxidation.

<92>

<93> [Table 1]

<94>

Step 2. Manufacturing the Magnesium Alloy Beam Rat

The magnesium alloy molten metal of step 1 was maintained at 700 ^° C. for 10 minutes and a magnesium alloy billet having a diameter of 80 mm and a length of 200 mm was prepared using a steel mold preheated to 200 ^° C. <97>

Step 3. Homogenizing the Magnesium Alloy Billet

Magnesium alloy billet prepared in step 2 was heated to a rate of 1 ^° C / min in an inert atmosphere and heat treated at 400-490 ^° C for 12-15 hours to homogenize. In addition, in order to suppress the formation of coarse precipitated phase that may occur during the billet process of the billet was treated with water at room temperature. The homogenization treatment conditions according to each example are shown in Table 2 below.

<100>

<ιοι> 【Table 2】

<102>

Step 4. Performing compression deformation

In step 3, the homogenized magnesium alloy billet was compressed by 10% in the longitudinal direction from silver to a strain rate of about 0.1 / s using a 150 ton hydraulic press.

<105>

Step 5. Extruding

The magnesium alloy extruded material was manufactured by extruding the rod into a rod of 16 mm using an indirect extruder (maximum pressure output: 500 tonf) after processing into a rod of 51 隱 of compression-modified magnesium alloy billetol in step 4. Extrusion temperature: 200 ^° C, extrusion ratio: 2 ^' 1, ram speed: 0.1 mm / s).

<108>

Example 7 Preparation of Magnesium Alloy Extruded Material

Magnesium alloy extruded material was prepared in the same manner as in Example 4, except that compression deformation was performed at 5% in Step 4 of Example 4.

<111>

Example 8 Fabrication of Magnesium Alloy Extruded Material

Phase 3 of Example 4 was repeated except that compression strain was performed at 15%. A magnet alloy extruded material was prepared in the same manner as in Example 4.

<114>

<ιΐ5> <Comparative Example 1-6> Preparation of magnesium alloy extrusion material

<8> A magnet alloy extruded material was manufactured in the same manner as in Examples 1 to 6 except that the compression deformation of Step 4 was not performed in Examples 1 to 6.

<117>

<118> <Comparative Example 7>

Mg alloy extruded material was manufactured in the same manner as in Example 4, except that compression deformation was performed at 2% in Example 4 of Example 4.

<120>

<121> Analysis

1. Microstructure Analysis of Magnesium Alloy Beamlets with Compressive Strain

In order to analyze the microstructure of the magnet alloy billet according to the compression deformation in the present invention, before and after compression deformation was analyzed using an optical microscope, and the results are shown in FIGS. 2 and 3.

FIG. 2 and FIG. 3 show the results of analyzing before and after compression deformation of the homogenized magnesium alloy billet using an optical microscope. From this, it can be seen that twins are formed in the magnesium alloy material by compression deformation.

FIG. 4 shows the results of analysis of the compressive deformation of the homogenized heat-treated A231 magnesium alloy billet using the electron back-scattering diffraction diffraction column, where many twins are formed, and these twins are mostly {10-12} tensile twins. have.

2, 3 and 4, it can be seen that twins can be formed in the magnesium alloy material by compressive deformation of the homogenized magnesium alloy billet.

<127>

Experimental Example 1 Microstructure Analysis of Magnesium Alloy Extruded Materials

In order to examine the effect of the compression deformation of the magnesium alloy extruded material according to the present invention, the magnesium alloy extruded material of Examples 1-6 and Comparative Examples 1-6 were analyzed using an optical microscope and an electron scattering diffraction diffraction. The results are shown in FIGS. 5, 6 and 7.

FIG. 5 is a result of analyzing the magnesium alloy extruded materials of Comparative Example 1 and Example 1 using electron backscattering diffraction diffraction. On the other hand, in the extruded ash of Example 1, which was subjected to compression deformation, recrystallization occurred throughout the material to have uniform and fine grains. This reduced the average grain size of the extruded material from 10.3 urn to 3.1 urn due to compression deformation.

<131>

6 and 7, the magnesium alloy extruded materials of Examples 1 to 6, which performed compression deformation, had a recrystallized area as compared with the magnet alloy extruded materials of Comparative Examples 1-6, which did not perform compression deformation. More and more homogeneous tissue was shown. This result for the magnesium alloy extrudates of Examples 1-6 can be determined to be due to the twins formed by compression deformation acting as recrystallization sites in the extrusion process to improve the recrystallization fraction.

<133>

From this, after the compression deformation treatment of the homogenized magnesium alloy extruded material according to the present invention to perform a compression deformation treatment in a specific range, to produce a magnesium alloy extruded material by forming twins in the magnesium alloy material to form a magnesium alloy extruded material It can be judged that the strength and ductility of the membrane can be improved simultaneously.

<135>

Experimental Example 2 Evaluation of Mechanical Properties of Magnesium Alloy Extrusions

In order to evaluate the mechanical properties of the magnet alloy according to the present invention, Example 1-

A rod-shaped specimen having a gauge length of 25 mm and a gauge diameter of 6 mm was prepared using a magnesium alloy extruded material of 6, and the rod-shaped specimen was tensile at a strain rate of ¹ × 10 − ³ S ^_1 using a room temperature tensile tester (INSTRON 4206). Was tested and the results are shown in Table 3 below. In Table 3, the results of Example 4, Example 7, Example 8, Comparative Example 4 and Comparative Example 7 made of the same alloy TAZ811 are shown in Table 4 below.

<138>

<139> [Table 3]

<140> [Table 4]

<141>

Referring to Table 3, the magnesium alloy extruded material of Examples 1 to 8 according to the present invention has a maximum yield strength as compared with the magnesium alloy extruded material of Comparative Examples 1 to 6, which do not perform compression deformation after homogenizing. 39 MPa, tensile strength is up to 32 MPa, elongation is 22%. In addition, it can be seen that the TSXEL value, which is a factor for evaluating the physical properties of the magnet alloy extruded material, was improved by up to about 32%.

<143>

Referring to Table 4 above, the yield strength, tensile strength, and age increase as the compressive strain increases.

^'It can be seen that the elongation is improved, and the compressive strain of Example 4, Example 7 ¾ Example 8, yield strength, tensile strength and elongation compared to Comparative Example 4 in which the compression strain was not performed It can be seen that this is remarkably improved. In particular, in the case of Example 8 it can be seen that the compressive strain to 15% to improve the yield strength 46 MPa, the tensile strength is 45 MPa, the elongation is improved by 2.2%. From this, it can be seen that the manufacturing method of the magnesium alloy extruded material according to the present invention can improve the strength and ductility of the magnesium alloy extruded material by compressing the homogenized magnesium alloy billet to a specific range and then extruding it. It can be seen that an extrusion material having excellent physical properties can be produced by increasing the amount of compression deformation.

Claims

[Range of request]

[Claim 1]

Melting the raw material of the magnesium alloy (step 1);

Casting a raw material of the molten magnesium alloy melted in step 1 to produce a magnesium alloy billet (step 2);

Homogenizing the magnesium alloy billet prepared in step 2 (step

3);

Compressing and straining the homogenized magnesium alloy billet of step 3 in the range of 3-20 3/4 (step 4); And

Method for producing a magnesium alloy extruded material comprising the step (step 5) of extruding the compression-modified magnesium alloy billet of step 4.

[Claim 2]

The method of claim 1,

The casting of the step 2 is a method of manufacturing a magnet alloy extruded material, characterized in that carried out at 650-750 ^° C.

[Claim 3]

The method of claim 1,

The homogenization of step 3 is a method of manufacturing a magnesium alloy extruder, characterized in that it comprises a step of cooling after performing a heat treatment process at 400-550 ^° C for 0.5-96 hours.

[Claim 4]

The method of claim 1,

The homogenization of the step 3 is a method of producing a magnesium alloy extruded material, characterized in that carried out after preheating at 250-350 ^° C.

[Claim 5]

The method of claim 1,

Compression deformation of the step 4 is a method of manufacturing a magnesium alloy extruded material, characterized in that carried out in the longitudinal direction with respect to the magnesium alloy billet.

[Claim 6]

The method of claim 1,

Compression deformation of the step 4 is a method of producing a magnesium alloy extruded material, characterized in that carried out at a temperature range of room temperature to 250 ^° C.

[Claim 7]

The method of claim 1,

Extrusion of step 5 is a method for producing a magnesium alloy extruded material, characterized in that carried out after pre-heating at 200-450 ^° C.

[Claim 8]

The method of claim 1,

The manufacturing method of the magnesium alloy extruded material is a method of manufacturing a magnesium alloy extruded material, further comprising the step of aging after step 5.

[Claim 9]

The method of claim 8,

The aging treatment is a method for producing a magnesium alloy extruded material, characterized in that carried out for 1-360 hours at 150-250 ^° C.

[Claim 10]

Magnesium alloy extrusion material produced by the method of claim 1. [Claim 111]

Parts for transportation equipment manufactured using the magnesium alloy extrusion material of claim 10.