JPS62120445A - Formed goods of fiber-reinforced metallic composite material - Google Patents

Abstract

PURPOSE:To obtain high-strength formed goods of fiber-reinforced metallic composite material by preparing a woven fabric by use of a preformed wire as a warp and a matrix material formed into thread or fine-wire shape as a weft, by laminating the resulting fabrics, and by subjecting the laminated fabrics to hot-press or hot-roll forming. CONSTITUTION:The preformed wire is used as warp, and the matrix material which is formed into the shape of thread or fine wire is used as weft. As the weft to be used with the warp of preformed wire, the same material that is used as the matrix of the preformed wire is employed. Above-mentioned ward and weft are woven into fabrics and the obtained fabrics are laminated, and the laminated fabrics are then subjected to hot-press or hot-roll forming.

Description

[Detailed description of the invention] [Field of industrial use] The present invention relates to fiber-reinforced metal composite molded articles.

[Prior art]

Materials used for automobile engine parts and aircraft skins are required to be lightweight and have high rigidity. Aluminum alloy has been used for this equipment, but aluminum alloy has low strength at high temperatures and white tjs [IE
For this reason, engines such as aircraft must be cooled, and aluminum alloys cannot withstand the effects of frictional heat on aircraft wings when they exceed the speed of sound.

For this reason, fiber-reinforced metal composite molded products have come to be used in rockets, military aircraft skins, automobile engines, bearings, and the like.

Conventionally, fiber-reinforced metal composite materials (FRM materials) have been made using silicon carbide continuous fibers, carbon fibers, alumina fibers, boron fibers, etc. as reinforcing fibers and pure aluminum, various aluminum alloys, zinc alloys, lead alloys, copper alloys, or titanium alloys as a matrix. preform wire (F
Intermediate materials for RM molding) are aligned and hot pressed to mold.

[Problem that the invention seeks to solve]

Depending on the conventional mold forming method such as hot press molding, the alignment direction is likely to be disturbed, and the properties of the preform wire used, especially the strength, of the molded product were lower than expected.

In addition, when using the preform wire as it is in hot press molding or other molding molding, it is possible to produce a unidirectional laminated molded product, but it is possible to produce a unidirectional laminated molded product by orthogonally (0/90° ) It was impossible to stack them or to stack them at arbitrary angles.

Furthermore, in hot pressure roll molding, it is necessary to properly arrange and align the preform wires, but because it is difficult to align the preform wires, preform wires have not been used in the roll molding method.

Furthermore, the preform wires were separated one by one, making handling difficult.

When molding a fiber-reinforced metal composite material by hot press molding, etc., the strength of the molded product does not decrease compared to the strength of the preform wire, which is the intermediate material of the molded product, or the strength is finely reinforced When molding a metal composite material using a mold such as one-press molding, unidirectional molded bodies can not only be laminated in parallel, but also perpendicularly (0/90°) or at any angle.

In addition, the present invention provides a fiber-reinforced metal composite molded product in which the preform wires can be arranged or aligned relatively easily, and roll molding can also be applied.

[Means for solving problems]

A woven fabric is created by using preform wire (intermediate material for fiber-reinforced metal composite molded products) as warp threads and weft threads made from the matrix material of 2. The present invention was completed based on the knowledge that the properties of the fiber-reinforced metal composite molded product obtained by molding largely inherit the strength of the preform wire used.

〔composition〕

In the present invention, the preform wire is used as the warp, the matrix material is thread-like or thinned as the weft, the warp and the weft are used to produce a woven fabric, and the resulting woven fabric is laminated and hot-pressed or hot-press rolled. This is a method for producing a fiber-reinforced metal composite molded article obtained by molding.

[Effect]

The preform wire is composed of silicon carbide continuous fibers, carbon fibers, alumina fibers, boron fibers, etc. as reinforcing fibers, and pure aluminum, various aluminum alloys, magnesium alloys, lead alloys, copper alloys, titanium alloys, etc. as a matrix. .

The weft threads used for the warp threads of the preform wire are made by thinning the same metal as the matrix of the preform wire, or by making thin threads from metal foil using a slitter.

The thread diameter used is 10 to 500 microns, but preferably 200 microns or less so as not to lower the fiber volume content.

Further, as for the material of the weft, it is preferable to use the same material as the matrix of the preform wire, but depending on the purpose, a material that can be alloyed with the matrix to increase strength may be used as appropriate. Furthermore, ceramic fibers such as silicon carbide fibers, carbon fibers, alumina fibers, and glass fibers can also be used as they are.

〔effect〕

According to the present invention, preform wires can be easily and perfectly aligned in various types of molding, so a molded product with good properties can be obtained.

Furthermore, according to the present invention, a cross-laminated product that intersects at various angles can be easily obtained by molding. Furthermore, it can be easily applied to a wide range of fields such as roll forming, and handling is improved.

〔Example〕

Next, the present invention will be explained with reference to Examples and Comparative Examples.

Example 1 A preform wire with pure aluminum as a matrix was produced using silicon carbide continuous fibers, and this preform wire was used as a warp, and pure aluminum filaments (thread II 50μ, thickness 20μ) were twisted together. A 200mm x 100rnrn fabric was created as the weft, and this fabric was used to create a 2t x 25mm fabric using a hot press.
Eggplant pieces 1 to 100 mm in size were prepared.

The strength of the preform wire is lOOk g/r
nm2, whereas the strength of the fiber-reinforced metal material molded product was 95 kg/mm'' as shown in Table 1.

Comparative Example [In Example 1, pure aluminum thread was used as the weft thread,
The preform wire of Example 1 was molded by hot press in the same manner except that the weaving was not carried out into the warp of the preform wire. The strength of the obtained fiber-reinforced metal material molded product was 65 kg/mm'.

Example 2 Alumina fiber was used as the reinforcing fiber, preform wire with 71 helices of A-6061 (aluminum alloy) was used as the warp, and A-6061 (aluminum alloy) was used as the weft (150μ in the system, thickness 2Ott) at 200x.
Create l 00mrr+(1') fabric.

Obtained fabric climb, Hola 1-Breath 2 + × 25 X
A 100 mm test piece was prepared.

The strength of the preform wire is 95 kg/mm
', while the strength of fiber-reinforced metal molded products is 95.
kg/mm".

Comparative Example 2 The preform wire of Example 2 was molded using a Hola 1-press in the same manner as in Example 2, except that A-6061 alumina fibers and alloy threads were not woven into the warp of the preform wire as weft threads.

The strength of the obtained fiber-reinforced metal material molded product is 70 kg/
It was 2 mm.

Example; 3 The fabric produced in Example 1 was molded into ltXlo by hot pressure roll molding.
om/nX10m fiber reinforced metal molded product (FRM)
Got a sheet.

The strength of the obtained l''RM Sea 1~ was 90 kg/mm2 as shown in Table 1.

Claims (3)

[Claims] (1) The preform wire is used as the warp, the matrix material is thread-like or thinned as the weft, the warp and the weft are used to create a woven fabric, the resulting woven fabric is laminated, hot pressed,
Or a fiber-reinforced metal composite material molded product obtained by hot-press roll molding. (2) A fiber-reinforced metal composite molded article according to claim 1, in which the weft used in the woven fabric and the matrix material of the preform wire are the same material. (3) A fiber-reinforced metal composite molded article according to claim 1, in which the weft of the fabric and the matrix material form a strong alloy.