JP2009172657A - High-performance magnesium alloy member and method of manufacturing it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a high-performance magnesium alloy member by simply controlling the texture of the extruded material of a magnesium alloy and a high-performance magnesium alloy member. <P>SOLUTION: In the method of manufacturing the high-performance magnesium alloy member and the high-performance magnesium alloy member, the ductility of a sample is rapidly improved as compared to an ordinary extruded material by inclining the ä0002} plane not less than 15° to the direction of extrusion and increasing Schmid's factor of the ä0002} plane in the direction of extrusion (tensile direction), by applying a twist extruding method to the extrusion of a magnesium alloy and simultaneously imparting the extrusion and shear deformation to the sample. Various texture can be made by a continuous process and with a single die and the high-performance magnesium alloy member which is remarkably improved in the ductility at the normal temperature is simply manufactured and provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for producing a high-performance magnesium alloy and a high-performance magnesium alloy member. More specifically, the present invention relates to a high-performance magnesium alloy having a significantly improved room temperature ductility by applying a torsion extrusion method to the magnesium alloy and controlling the texture. The present invention relates to a method for producing a performance magnesium alloy and a high performance magnesium alloy member produced by the method. The present invention provides a magnesium alloy member that can be used in a wide range of fields, such as space / aviation materials, electronic equipment materials, automobile members, and the like.

Magnesium has the lowest density (= 1.7 g / cm ³ ) among practical structural metal materials, has easy recyclability unique to metal materials, and has abundant resources. It is attracting attention as a material. Currently, many magnesium products in Japan are produced by a casting method (die casting method, thixocasting method).

  For example, in the automobile industry, members such as a steering wheel, a cylinder head cover, and an oil pan are made of a magnesium alloy casting material. Moreover, in home appliances, home appliance housings such as personal computers and mobile phones are made of a magnesium alloy casting material. However, the production method based on the casting method has problems such as the need for post-processing to compensate for casting defects, a low yield, and problems with the strength and rigidity of the members.

  Since the plastic working process generally has a high yield and can achieve high strength and high toughness at the same time as forming, it can be said that it is an effective means of expanding the demand for practical structural metal materials. In particular, extrusion molding can produce primary molded bodies of various shapes such as rods, pipe materials, plate materials, etc., and the primary molded body produced by extrusion molding is a home appliance housing (such as a PC housing), It is expected to be applicable to transportation equipment parts (cross members, brake pedal supports, etc.), robot structural parts, etc.

  However, in reality, there are few examples of magnesium alloy extruded materials being commercialized. The reason for the low demand for extruded magnesium alloy materials is low room temperature ductility due to the formation of a close-packed hexagonal lattice structure and texture.

  The critical decomposition shear stress of non-bottom slip of magnesium is much larger than bottom slip ({0002} plane slip) at room temperature, and the anisotropy causes low temperature ductility. Further, in the extruded magnesium alloy, a texture in which the extrusion direction and the {0002} plane are aligned in parallel is formed. When such a texture is formed, the Schmid factor in the extruding direction (tensile direction) becomes low, which causes the normal temperature ductility to be further reduced.

  Therefore, attempts have been made to control the texture as a means of improving the room temperature ductility of the extruded magnesium alloy. An ECAP (Equal Channel Angular Pressing) method is known as a method of controlling the texture by introducing shear strain into a metal material.

  In this ECAP method, a metal material is pushed from one side of a mold having a hole having a bent portion at the center and the shape of the inlet and the outlet is the same, and a large pure shear deformation is applied to the metal material. In the magnesium alloy subjected to ECAP processing, a texture in which the {0002} plane is inclined by 45 ° with respect to the extrusion direction is formed. The Schmid factor in the extrusion direction (tensile direction) of the magnesium alloy having such a texture is high, and the room temperature ductility is improved (see Non-Patent Document 1).

  The Schmid factor is determined by the angle (θ) between the tensile direction of the material and the normal line of the crystal slip plane, and the angle (φ) between the tensile direction and the crystal slip direction (Schmid factor = cos (θ)). cos (φ)), the Schmid factor takes a maximum value (0.5) when each angle is 45 °. That is, when the c-axis ({0002} plane) is inclined by 45 ° with respect to the tensile direction, the slip system of the {0002} plane becomes the most active state, and theoretically, the ductility of the magnesium alloy takes the maximum value.

  Other methods for improving the texture of extruded magnesium alloy materials include a torsion die with a spiral hole with the same cross section inside, and a return die with a hole with the same cross section in the straight direction inside. There has been proposed a method of extrusion molding using a mold (twist mold) in which the two are alternately combined (herein referred to as “twist mold extrusion method”). It has been reported that the ductility of an extruded material subjected to the “twisting die extrusion method” is improved by 150% compared to a normal extruded material (see Patent Document 1).

  Furthermore, when extruding a metal material, a method of reducing the extrusion load by the “torsion extrusion method” that imparts torsional deformation to the material simultaneously with the extrusion, and a method of refining crystal grains by applying a large plastic strain Have been reported in various ways (see Patent Documents 2-7 and Non-Patent Documents 2-6).

  The conventional ECAP method is a batch process, and in order to produce a magnesium alloy extruded material having a controlled texture, a plurality of operations are required, the productivity is low, and there is no practical example. On the other hand, when the “twisting die extrusion method” is used, the texture of the magnesium alloy extruded material can be controlled by a continuous process by forming a die shape. However, according to this method, it is necessary to individually form dies according to the material specifications, and therefore, it is not suitable for the high-mix, low-volume production type magnesium alloy market. Furthermore, the “twist extrusion method” has conventionally been limited to a specific concept (load reduction, grain refinement).

JP 2006-289479 A JP-A-2005-990 JP 2005-991 A Japanese Patent Laid-Open No. 2005-992 JP-A-2005-993 JP-A-2005-994 JP-A-2005-996 Toshiji Mukai, Kenji Higashi “Refining crystal grains and improving mechanical properties of light metal materials by ECAE process”-Tradeoff balancing of high strength and high ductility-Metal, Vol. 170, no. 11, p. 71-77 (2000) W. Bochniak, A.M. Korbel, “Plastic flow of aluminum extruded under complex conditions”, Mater. Sci. Technol. , Vol. 16 (2000) p. 664-669 L. X. Kong, P.M. D. Hodgson, “Constitutive modeling of extension of lead with cyclic torsion”, Mater. Sci. Eng. A, Vol. 276 (2000) p. 32-38 L. X. Kong, L.M. Lin, P .; D. Hodgson, “Material properties under drawing and extension with cyclic torsion”, Mater. Sci. Eng. A, Vol. 308 (2001) p. 209-215 X. Ma, M.M. R. Barnett, Y.M. H. Kim, “Forward extrathrough through steady rotating conical supplies. Part I: experiments”, Int. J. et al. Mech. Sci. Vol. 46 (2004) p. 449-464 X. Ma, M.M. R. Barnett, Y.M. H. Kim, “Forward extraction through steady rotating conical supplies. Part II: theoretical analysis”, Int. J. et al. Mech. Sci. Vol. 46 (2004) p. 465-489

  Under such circumstances, the present inventors have conducted intensive research with the goal of developing a new method capable of controlling the texture of the magnesium alloy in view of the above-described prior art. By applying the “torsion extrusion method”, which has been used as a means for reducing extrusion load and means for refining crystal grains, to magnesium alloys, it is possible to produce high-performance magnesium alloys with significantly improved room temperature ductility. The present inventors have found that the intended goal can be achieved and have completed the present invention.

  The present invention applies a “twist extrusion method” known as a means for reducing extrusion load and means for refining crystal grains to a magnesium alloy, and uses this technique for extrusion molding of a magnesium alloy. Using a die, it is possible to continuously build various textures. By doing so, magnesium alloy extruded members with significantly improved cold ductility can be easily created by controlling the texture of the magnesium alloy. It is possible to do that. That is, an object of the present invention is to provide a high-performance magnesium alloy member whose room temperature ductility is remarkably improved, and at the same time, to provide a method for easily producing it.

The present invention for solving the above-described problems comprises the following technical means.
(1) A method for producing a high-performance magnesium alloy member having improved cold-temperature ductility by controlling the texture of the magnesium alloy, and producing a magnesium alloy extruded material by hot extrusion using a torsion extrusion method In addition, the shear stress is controlled by a punch pressing speed and a die rotating speed.
(2) The method for producing a high performance magnesium alloy member according to (1), wherein the extrusion is performed by setting the sample temperature to 200 ° C. or more and 470 ° C. or less.
(3) The (1) description Manufacturing method of high performance magnesium member.
(4) By applying shear deformation to the sample simultaneously with extrusion molding, the {0002} plane is inclined by 15 ° to 30 ° with respect to the extrusion direction, and the {0002} plane Schmid factor in the extrusion direction (tensile direction) is increased. The manufacturing method of the high performance magnesium member of the said (1) description.
(5) The method for producing a high-performance magnesium member according to (4), wherein the Schmid factor is increased from 0.25 (50% with respect to the maximum value) to 0.43 (87% with respect to the maximum value). .
(6) A method for producing a high-performance magnesium alloy member, comprising subjecting the high-performance magnesium alloy member produced by the method according to any one of (1) to (5) above to heat treatment and annealing. .
(7) The method for producing a high performance magnesium alloy member according to (6), wherein the high performance magnesium alloy member is subjected to a heat treatment at 300 ° C. to 450 ° C. and annealed for at least 10 minutes.
(8) A magnesium alloy member with improved room temperature ductility, and when the {10-10} plane texture is measured using a plane perpendicular to the extrusion direction as the measurement plane, the crystal orientation showing the maximum strength is A high-performance magnesium alloy member characterized by being inclined at least 15 ° with respect to the extrusion direction.
(9) The high-performance magnesium alloy member according to (8) above, wherein the {0002} plane has a texture that is inclined by 15 ° to 30 ° with respect to the extrusion direction.
(10) With respect to the extrusion direction (tensile direction), the Schmid factor is 0.25 (50% with respect to the maximum value, θ = 75 °, φ = 15 °) to 0.43 (87% with respect to the maximum value). , Θ = 60 °, φ = 30 °), the high performance magnesium alloy member according to (8).

Next, the present invention will be described in more detail.
The present invention is a method for producing a high-performance magnesium alloy member having improved cold-temperature ductility by controlling the texture of the magnesium alloy, and producing a magnesium alloy extruded material by hot extrusion using a torsion extrusion method In this case, the shear stress is controlled by the pressing speed of the punch and the rotational speed of the die. In addition, the present invention is characterized in that the high-performance magnesium alloy member produced by the above method is subjected to heat treatment and annealed. Furthermore, the present invention is a magnesium alloy member with improved room temperature ductility, wherein the {10-10} plane texture is measured with the plane perpendicular to the extrusion direction as the measurement plane, and the crystal showing the maximum strength The azimuth is inclined by 15 ° or more with respect to the extrusion direction.

  In the present invention, in the above method, the rotational speed of the die is increased and the shear deformation component is increased as compared with the pressing speed of the punch, and a texture in which the {0002} plane is inclined in the extrusion direction is formed. , And by applying shear deformation to the sample simultaneously with extrusion, the {0002} plane is inclined 15 ° to 30 ° with respect to the extrusion direction, and the {0002} plane Schmid factor in the extrusion direction (tensile direction) is increased. Is a preferred embodiment. In the present invention, in the magnesium alloy member, the {0002} plane has a texture inclined by 15 ° to 30 °, and the Schmid factor is 0.25 (maximum) with respect to the extrusion direction (tensile direction). Preferably 50% for value, θ = 75 °, φ = 15 °) to 0.43 (87% for maximum value, θ = 60 °, φ = 30 °) It is as an aspect.

  The present inventors have paid attention to the twisting extrusion method as a means for improving the room temperature ductility of the magnesium alloy extruded material. The concept of the twisting extrusion method is shown in FIG. This method is an extrusion method characterized by physically rotating a die used for hot extrusion. When this method is used for extrusion molding of a metal material, as described above, it is possible to impart torsional deformation to the material at the same time as extrusion, and apparently the extrusion load is reduced. As a result, it is possible to apply a large plastic strain.

  The present inventors have taken the above-mentioned “twisting extrusion method” as a means different from the conventional concept (load reduction / grain refinement) based on the concept of its use. The idea was to apply this method to texture control of magnesium alloys. And as a result of applying this method to magnesium alloy and using it for extrusion molding, it is possible to continuously build various textures using a single die, thereby significantly improving the cold ductility, New findings were obtained, such as the ability to control the texture to easily produce high-performance magnesium alloy extruded members with significantly improved room temperature ductility. The reason why the texture of the magnesium alloy can be controlled by the twisting extrusion method will be described below.

  In a normal extrusion process ((1) in FIG. 2), a texture in which {0002} faces are aligned in parallel to the extrusion direction is formed on the extruded material due to the compressive stress of the punch. In ECAP processing ((2) in FIG. 2), a texture in which the {0002} plane is inclined by 45 ° with respect to the extrusion direction is formed in the extruded material due to the shear stress due to the channel shape (reference: T Mukai, M. Yamanoi, H. Watanabe, K. Higashi, “Ductility enhancement in AZ31 magnesium array by control size,” 89, Scrip.

  On the other hand, when the twist extrusion method is applied to the extrusion molding of the magnesium alloy, the compressive stress due to the punch (FIG. 3-1) and the shear stress due to the die rotation (FIG. 3-2) are simultaneously applied to the magnesium alloy. The resultant force of (1) and (2) in FIG. 3 acts on the material. That is, it has been found that a texture in which the {0002} plane is inclined with respect to the extrusion direction can be formed by the shear stress component.

  As a result of diligent research and development, the present inventors adopted a torsion extrusion method for extrusion molding of a magnesium alloy and processed it under appropriate conditions, so that the {0002} plane is in the extrusion direction (tensile direction). It has been found that it is possible to build a texture inclined by 15 ° to 30 °. When the {0002} plane is tilted by 15 ° with respect to the extrusion direction (tensile direction), the Schmid factor rises to 0.25 (50% of the maximum value) (θ = 75 °, φ = 15 °), When the {0002} plane is inclined by 30 ° with respect to the extrusion direction (tensile direction), the Schmid factor rises to 0.43 (87% with respect to the maximum value) (θ = 60 °, φ = 30 °).

  The magnitude of the shear stress applied to the magnesium alloy can be controlled by the rotational speed of the die and the pressing speed of the punch, and by adjusting these, it is possible to build a texture that meets the specifications. For example, when the rotational speed of the die is increased as compared with the pressing speed of the punch, the shear deformation component increases, and it becomes possible to build a texture in which the {0002} plane is greatly inclined in the extrusion direction.

  Another factor that controls the magnitude of the shear stress is the sample temperature during extrusion molding. When the sample temperature is high (470 ° C. or higher), the sample becomes so soft that shear deformation due to the die does not reach the center of the sample. As a result, it becomes difficult to control the texture. Therefore, in the present invention, it is important to set the sample temperature to 470 ° C. or lower.

  On the other hand, when the sample temperature is set to 200 ° C. to 300 ° C., the shear deformation effectively acts up to the center of the sample, and the {0002} plane can be greatly inclined with respect to the extrusion direction. Therefore, it is desirable to set the extrusion temperature as low as possible. However, when the sample temperature is 200 ° C. or lower, the value of the critical decomposition shear stress of the non-bottom slide is very high and the processing is difficult. When the magnesium alloy is subjected to torsion extrusion, it is important to set the sample temperature to 200 ° C. to 470 ° C.

  Further, it has been found that more dislocations are introduced into a magnesium alloy member produced by a torsion extrusion method than a member produced by a normal extrusion method. When high-density dislocations remain in the extruded material, even if the Schmid factor of {0002} plane slip system is increased, the high-density dislocation becomes an obstacle, and the activity of {0002} plane slip system is hindered. . As a result, it becomes difficult to obtain healthy growth.

  In the present invention, it is important to subject the twisted extruded material to heat treatment (complete annealing) in order to remove the high density dislocations introduced during the twisted extrusion. Specifically, it is desirable to subject the produced magnesium alloy to heat treatment at 300 ° C. to 450 ° C. for 10 minutes or longer. When the heat treatment temperature is set to 450 ° C. or higher, there is a possibility that abnormal grain growth of crystal grains may occur due to static recrystallization.

  Magnesium alloy extruded material is a structural member with high specific strength characteristics, and is expected to be used for structural parts, but there are few examples of commercialization. Moreover, as a cause of the increase in the demand for the extruded material, there is a texture formation at the time of extrusion molding. Conventionally, the ECAP method and the twisting die extrusion method are known as methods for controlling the texture of the magnesium alloy.

  The conventional ECAP method is a batch process, and in order to produce a magnesium alloy extruded material having a controlled texture, a plurality of operations are required, the productivity is low, and there is no practical example. On the other hand, if the “twisting die extrusion method” is used, it is possible to control the texture of the extruded magnesium alloy material in a continuous process by creating a die shape. It is necessary to build dice individually, and it is not suitable for the high-mix, low-volume production type magnesium alloy market.

  On the other hand, in the present invention, the “twist extrusion method” is adopted for the extrusion molding of the magnesium alloy, and the {0002} plane is 15 ° with respect to the extrusion direction by applying shear deformation to the sample simultaneously with the extrusion molding. Tilt to increase the {0002} plane Schmid factor in the extrusion direction (tensile direction). Thereby, in this invention, the special effect that the ductility of the sample which heat-processed improves drastically compared with a normal extruded material is acquired. INDUSTRIAL APPLICABILITY The present invention is useful, for example, as a method for manufacturing a structural part such as a home appliance housing, a transportation equipment part, a robot, or the like and a product thereof.

The present invention has the following effects.
(1) The present invention makes it possible to provide a high-performance magnesium member having improved room temperature ductility and a method for producing the same by applying the twist extrusion method to a magnesium alloy.
(2) In the present invention, by applying the twist extrusion method to the magnesium alloy, the {0002} plane Schmid factor in the extrusion direction (tensile direction) is increased, the ductility is dramatically increased, and the formability at room temperature is increased. It will be possible to dramatically improve.
(3) It is possible to easily produce a magnesium alloy extruded member with controlled texture.

  EXAMPLES Next, although this invention is demonstrated concretely based on an Example, this invention is not limited at all by these Examples.

  The outline of the torsion extrusion apparatus applied to the magnesium alloy in this example is as shown in FIG. In this embodiment, the torsion extrusion apparatus is installed in a 2000 kN universal press, and extrusion is performed using the power of the press. The inner diameter of the container into which the sample is inserted is 26 mm, and the inner diameter of the movable die installed at the bottom of the container is 6 mm (extrusion ratio: 19). The movable die is connected to a motor with an output of 254 mN at a gear ratio of 71:24. A heater is installed on the outer periphery of the container, and the container (sample) can be heated to 450 ° C.

  In this example, AZ31B (Mg-3 mass% Al-1 mass% Zn-0.5 mass% Mn), which is a typical magnesium alloy wrought material, was used as a test material. The initial crystal grain size of the test material is 140 μm. This test material is subjected to torsion extrusion molding under the conditions of a sample temperature of 250 ° C. to 400 ° C., a die rotation speed of 0.5 to 6 rotations / minute (the rotation of the die is one direction), and a punch speed of 0.5 mm / minute. did. As a comparative example (comparative material), a sample prepared without rotating the die was also prepared. Some samples were subjected to heat treatment (345 ° C., 90 minutes) after extrusion.

  Sample that was subjected to torsion extrusion at a sample temperature of 250 ° C. and a die rotation speed of 6 rotations / minute (twisted extrusion material), and sample that was subjected to extrusion at a sample temperature of 250 ° C. and a die rotation speed of 0 rotation / minute (comparative material) FIG. 4 shows a columnar texture ({10-10} plane) texture before heat treatment. In measuring the texture, the Shulz reflection method was adopted, and the X-ray source was CuKα (40 kV, 40 mA). The measurement surface was a surface perpendicular to the extrusion direction.

  The measured raw data normalized by the texture of the magnesium powder was used as measurement data. The numerical value shown in the upper right of the texture indicates the relative intensity of the peak. Paying attention to the results of the comparative material (Comparative Example 1), the crystal orientation (hereinafter referred to as the peak angle) at which the columnar texture exhibits the maximum strength was almost parallel (2 °) to the extrusion direction. On the other hand, the peak angle of the twisted extruded material was 30 °.

  FIG. 5 shows the columnar texture of the heat-treated sample. The sample extrusion conditions are the same as those in FIG. 4 (Comparative Example 1, Example 1). The peak angle of the comparative material (Comparative Example 2) was 2 °, the peak angle of the twisted extruded material was 31 °, and the columnar texture showed the same tendency as before the heat treatment.

  Next, Table 1 summarizes the peak angles of the columnar texture of the samples subjected to torsion extrusion molding under various conditions. Comparative Examples 1 and 2 and Examples 1 and 2 in Table 1 are the results shown in FIGS. From the results in Table 1, it can be confirmed that the peak angle of the twisted extruded material is 15 ° or more. Moreover, it can be confirmed that the peak angle increases as the extrusion temperature decreases and the die rotation speed increases.

A room temperature tensile test was performed on the comparative materials (Comparative Examples 1, 2, and 3 in Table 1) and the twisted extruded materials (Examples 1, 2, and 5 in Table 1). A round bar test piece having a parallel part length of 10 mm and a parallel part diameter of 2.5 mm was cut out from the extruded material, and a tensile test was performed at an initial strain rate of 1.7 × 10 ⁻³ (s ⁻¹ ). The test results are summarized in Table 2. Comparing the breaking elongations of the samples having the same sample temperature (extrusion temperature), it can be seen that the torsion extruded material exhibits superior ductility than the comparative material.

  As described above in detail, the present invention relates to a high performance magnesium alloy member and a method for producing the same, and according to the present invention, a method for producing a high performance magnesium alloy member and a high performance magnesium alloy member can be provided. . The high-performance magnesium alloy member according to the present invention has greatly improved ductility by the torsion extrusion method, and can dramatically improve the formability and reliability of the extruded material. When the extruded bar material and pipe material produced according to the present invention are employed in, for example, household appliance housings, transportation equipment parts, robot structural parts, etc., the present invention greatly contributes to the weight reduction of those members. The present invention is useful for providing a high-performance magnesium alloy member having a great industrial significance and a method for producing the same.

It is explanatory drawing of the twist extrusion apparatus utilized for implementation of this invention. It is the figure which showed the force which acts on a sample inside a die | dye when a magnesium alloy is normally used for extrusion and ECAP, and is the figure which showed the crystal orientation after extrusion. (1) shows the case of normal extrusion, and (2) shows the case of ECAP. It is the figure which showed the force which acts on a sample inside a die | dye when a magnesium alloy is used for torsion extrusion, and is the figure which showed the crystal orientation after extrusion. Sample that was subjected to torsion extrusion at a sample temperature of 250 ° C., a die rotation speed of 6 rotations / minute, and a punch speed of 0.5 mm / minute, a sample temperature of 250 ° C., a die rotation speed of 0 rotations / minute, and a punch speed of 0 It is the figure which showed the column surface ({10-10} plane) texture before heat processing of the sample (comparative material) used for extrusion at .5 mm / min, and the peak angle of the comparative material is 2 °. It is the figure which showed that the peak angle of the twist extrusion material is 30 degrees. Sample that was subjected to torsion extrusion at a sample temperature of 250 ° C., a die rotation speed of 6 rotations / minute, and a punch speed of 0.5 mm / minute, a sample temperature of 250 ° C., a die rotation speed of 0 rotations / minute, and a punch speed of 0 It is the figure which showed the column surface ({10-10} plane) texture after the heat processing of the sample (comparative material) subjected to extrusion at 5 mm / min, and the peak angle of the comparative material is 2 °. It is the figure which showed that the peak angle of the twist extrusion material is 31 degrees.

Claims (10)

  A method for producing a high-performance magnesium alloy member having improved cold ductility by controlling the texture of the magnesium alloy, and when producing a magnesium alloy extruded material by hot extrusion applying a torsion extrusion method. The method for producing a high-performance magnesium alloy member according to claim 1, wherein the shear stress is controlled by the indentation speed and the rotational speed of the die.   The manufacturing method of the high performance magnesium alloy member of Claim 1 which performs extrusion molding by setting sample temperature to 200 to 470 degreeC.   The high-performance magnesium according to claim 1, wherein the rotational speed of the die is increased, the shear deformation component is increased, and a texture with {0002} faces inclined in the extrusion direction is formed as compared with the indentation speed of the punch. Manufacturing method of member.   Claims: By applying shear deformation to a sample simultaneously with extrusion, the {0002} plane is inclined by 15 ° to 30 ° with respect to the extrusion direction to increase the {0002} plane Schmid factor in the extrusion direction (tensile direction). A method for producing a high-performance magnesium member according to 1.   The manufacturing method of the high performance magnesium member of Claim 4 which raises a Schmid factor from 0.25 (50% with respect to a maximum value) to 0.43 (87% with respect to a maximum value).   A method for producing a high-performance magnesium alloy member, comprising subjecting the high-performance magnesium alloy member produced by the method according to any one of claims 1 to 5 to heat treatment and annealing.   The method for producing a high performance magnesium alloy member according to claim 6, wherein the high performance magnesium alloy member is subjected to a heat treatment at 300 ° C to 450 ° C and annealed for at least 10 minutes.   This is a magnesium alloy member with improved room temperature ductility, and when the {10-10} plane texture is measured with the plane perpendicular to the extrusion direction as the measurement plane, the crystal orientation showing the maximum strength is in the extrusion direction. A member made of high-performance magnesium alloy, wherein the member is tilted by 15 ° or more.   The high-performance magnesium alloy member according to claim 8, wherein the {0002} plane has a texture inclined by 15 ° to 30 ° with respect to the extrusion direction.   With respect to the extrusion direction (tensile direction), the Schmid factor is 0.25 (50% with respect to the maximum value, θ = 75 °, φ = 15 °) to 0.43 (87% with respect to the maximum value, θ = The member made of high-performance magnesium alloy according to claim 8, wherein the member is elevated to 60 °, φ = 30 °).