JPH04182084A - Composite member - Google Patents

Abstract

PURPOSE:To increase the strength of a composite member without losing properties of electric conductivity and heat conductivity by joining metals of high electric conductivity and high head conductivity to a netlike high strength metal in a solid phase to reinforce them. CONSTITUTION:When a metal 3 excellent in strength such as iron and steel material is combined with metals 1, 2 excellent in electrical conductivity and heat conductivity such as Al and Cu, etc., the high strength metal 3 is used in a netlike shape. Composite algorithm comes in existence on such composite material, therefore, the strength of the composite material can be increased by increasing the rate of the high strength metal 3 such as iron and steel material, etc., contained in the section. Further, since the high strength metal 3 is netlike, reduction of the joining strength caused by the intermetallic compound and peeling, too, are not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a composite member of a metal with excellent electrical conductivity and thermal conductivity and a high-strength metal used in various fields.

<Prior Art> Highly electrically conductive metals such as A1 and Cu have properties that are not found in ordinary steel materials, such as electrical conduction, thermal conductivity, non-magnetism, corrosion resistance, and malleability, making them suitable for use in aircraft and automobiles.

It is used in many industrial fields such as electronic industry, mechanical industry, and daily necessities.

However, since these materials are significantly inferior in strength to steel materials, their use as strength members is far more limited than that of steel materials. Therefore, in applications that require these characteristics, the structure may become thicker due to its strength.
Due to the associated high cost, the current situation is that steel materials are unavoidably used even though these characteristics are originally desirable.

In an attempt to solve this current situation, metal materials have been composited in recent years, and metals with different properties are clad together.For example, A1 or A1 alloy and steel materials are combined to form a clad metal. Corrosion-resistant high-strength materials are known as conductive ferromagnetic materials and high specific strength materials, and members are also manufactured at low cost by cladding Cu or Cu alloy with steel materials.

<Problem to be solved by the invention> However, even with this type of rad construction, there are still problems with the electrical conductivity, thermal conductivity, and heat resistance of the cladding material, and the properties that vary in the thickness direction of the cladding material. Naturally, discontinuities in properties occur because the malleable metal and steel materials are layered.

Also, depending on the combination of different metals, for example, AI or A1
Hard and brittle intermetallic compounds are likely to form at the joint boundaries between dissimilar metals such as alloys and steel materials, and when heated to high temperatures, these compounds are continuously formed along the boundaries, resulting in a decrease in joint strength. The problem is that it decreases significantly.

The purpose of the present invention is to eliminate the drawbacks of the general cladding materials mentioned above, and to provide a composite member that can exhibit high strength while taking advantage of various properties such as thermal conduction, electrical conduction, specific gravity, and corrosion resistance. It is something to do.

<Means for Solving the Problems> The object of the present invention is to provide a composite member in which a metal having excellent electrical conductivity and thermal conductivity and a reticulated high-strength metal are solid-phase bonded to each other. When this solid phase bonding is achieved in a vacuum or in an inert gas atmosphere (such as roll bonding or hot press), hot isostatic pressing or the like is preferable.

Here, the reason why high-strength metal is made into a mesh shape is that it not only adds strength using the compound rule, but also provides continuity in the properties in the thickness direction, and also destroys the coating on the metal surface that inhibits bonding, making it possible to bond. This is to make it easier. Therefore, steel is a high-strength metal with a mesh shape.

In addition to stainless steel, T+, T+ gold alloy, high-strength A1 alloy, or Cu alloy may be used. In addition to forming this mesh shape by combining thin wire rods and strip materials, it can also be formed by cutting or punching.

It may also be formed by processing means such as rolling).

Additionally, a coating may be applied to the surface of the mesh to improve bonding properties.

<Function> In the present invention, when combining a metal with excellent electrical conductivity and thermal conductivity, such as Al or Cu$, and a metal with excellent strength, such as a steel material, a mesh is formed on the high-strength material side. It is characterized by the use of shapes. It has been known that the law of compounding holds true for the strength of such composite members, and therefore, it is possible to increase the strength of composite parts by increasing the proportion of high-strength materials such as steel in the cross section. I can do it.

In the present invention, since high-strength members are sandwiched in the lamination direction, the properties are continuous, so there is no discontinuity in various properties such as electrical conduction in the lamination direction. In addition, the mesh shape destroys the film on the surface of the mating material at the bonding interface, so
For example, it was difficult to join A-comrades even by roll bonding in a vacuum, but the high-strength net material destroys the surface film, making it easier to join. Furthermore, in the case of joining dissimilar materials, intermetallic compounds grow at the interface, which can cause a problem of reduced joint strength. However, in the present invention, even if the intermetallic compounds grow due to heating to high temperatures, this will not occur. This prevents the interface from peeling off.

<Example> The present invention will be described in detail below based on examples.

- Part 11L This Example 1 is an example in which a composite member was manufactured using AI as the high electrical conductivity metal and 5US304 as the high strength metal. That is, as shown in FIG. 1, a commercially available A1 plate 1,
Between 2 (0,3X80X300am), 5US30
4 (0.3 mm, 20 mesh), the whole was heated to 500° C. in a vacuum, and rolled by roll bonding at a reduction rate of 50%. Here, the AI board 1 is commercially available A1050. Al plate 2 is A305
2, and the reason why the AI plate is made of two types of materials is to make the joint stronger by combining A1 materials with different strength levels.

The strength of the obtained composite member is shown in Table 1 below, and a metallurgical microscope photograph of a cross section of the composite member is shown in FIG.

As is clear from the above results in Table 1, the strength of the obtained composite member is 225) 4 Pa, which is much higher than the 100 MPa strength of A1 shown as a reference, and the proportion of 5US304 in the cross section of the composite member is Small at 10% level, A1
In addition to maintaining the original properties, the bond between AI and 5US304 is perfect, and the A on both sides of 5US304 is
It can be seen that since the I's are continuous, there is no discontinuity in properties in the thickness direction like in conventional clad materials.

-Large] - This Example 2 is an example in which a composite member was manufactured using Cu as the high electrical conductivity metal and 5US304 as the high strength metal. That is, as shown in FIG. 3, a commercially available Cu plate 4 (0
, 3X 80X 3Of)+*m), 5LIS3
04 mesh 3 (0.3 mm, 20 meshes), the whole was heated to 800°C in a vacuum, and the rolling reduction rate was 4.
0% by roll bonding method.

The strength of the obtained composite member is shown in Table 2 below, and a metallurgical microscope photograph of a cross section of the composite member is shown in FIG.

Table 2 From this result, the strength of the composite member is determined by the Cu shown for reference.
It shows a strength of 270 MPa, which is much higher than 200) 4 Pa, and since the proportion of 5US304 in the cross section of the composite member is as small as 9%, it can be seen that the original properties of Cu can be sufficiently maintained.

<Effects of the Invention> As described above, although the present invention has excellent properties not found in high-strength metals such as steel materials, its use is limited due to its low strength. The high electrical conductivity and high thermal conductivity metal that had previously been used is reinforced with a mesh-like high-strength metal.
High strength can be achieved without losing electrical or thermal conductivity properties.

Furthermore, since the high-strength metal is mesh-like, there is no discontinuity in properties in the lamination direction, and there is no reduction in bonding strength or peeling caused by intermetallic compounds found in conventional cladding materials.

Therefore, the composite member of the present invention can be used in aircraft and automobiles.

Electronic! It can be used in a wide range of fields such as 1 machine and 1 daily necessities.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing Example 1 of the present invention, FIG. 2 is a metal microscopic micrograph of a cross section of a composite member obtained in Example 1, FIG. 3 is a schematic diagram showing Example 2, and FIG. The figure is a metallurgical microscope photo of a cross section of a composite member. Patent applicant Kurosui Kogyosho Co., Ltd. (2 people) Agent Noriharu Ariyoshi 1
Al (+050) 2 AI (5052) 35US304
M Fig. 2 Fig. 3 C,, 4 43SUS 304 N Fig. 4

Claims (1)

[Scope of Claims] 1. A composite member characterized in that a metal with excellent electrical conductivity and thermal conductivity and a mesh-shaped high-strength metal are solid-phase bonded to each other. 2. The metal with excellent electrical conductivity and thermal conductivity is Al or A.
2. The composite member according to claim 1, wherein the composite member is made of L alloy. 3. The metal with excellent electrical conductivity and thermal conductivity is Cu or C.
The composite member according to claim 1, wherein the composite member is made of a U alloy. 4. The composite member according to any one of claims 1 to 3, wherein the solid-phase bonding of the metal with excellent electrical conductivity and thermal conductivity and the high-strength metal is roll bonding.