JPH01166891A - Manufacture of intermetallic compound material - Google Patents

Abstract

PURPOSE:To reduce the manufacturing cost and to improve productivity by laminating and rolling ultrathin plates of dissimilar metal to form laminated plates. CONSTITUTION:Three each of coils 1 and 2 wound Al and Ti of ultrathin plates respectively are arranged alternately and rewound and the ultrathin plates are washed by vapor, etc., of trichloroethylene through a surface cleaner 3 to remove oil, etc. At the same time, after the ultrathin plate surfaces are polished, the six ultrathin plates are pressed and stuck to one another by a cold rolling machine 4 and laminated plates 5 consisting of six layers are formed and wound round reels to form laminated coils 6. The laminated plate coils 6 are arranged in six lines vertically and rewounded and the laminated plates 5 are washed and polished by the surface cleaner 3 and the laminated plates 5 are further pressed and stuck to one another by the cold rolling machine 4 and laminated plates 5' consisting of the six laminated plates 5 are formed and the laminated plates 5' are wound round reels to form laminated plate coils 6'. Further, the same operation is repeated to form laminated plate coils 6''. These are rewound and laminated plates 5'' are blanked to form plates 7 with necessary shape which are hot-pressed by a hot press to obtain products 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for producing an intermetallic compound material.

[Prior Art] In recent years, research has been actively conducted on intermetallic compounds having a structure in which atoms of another metal are incorporated into a lattice made up of atoms of a certain metal. These intermetallic compounds have properties that are completely different from those of simple alloys, and those with particularly excellent heat resistance and wear resistance have been developed, and along with ceramics, they are used in space rockets, supersonic aircraft fuselages, jet engines, etc. is attracting attention as a new material for equipment used under harsh conditions.

However, although the intermetallic compounds have excellent properties, they have extremely poor workability, and are not only difficult to process plastically but also difficult to cut. For this reason, the so-called HIP method (Hot Static Press) is used, in which metal powder is mixed and adjusted, placed in a mold, and heated and compressed at a temperature below the melting point using an inert gas as a pressure medium.
At present, products made of intermetallic compounds are manufactured by ing).

[Problems to be Solved by the Invention] However, in the HIP method as described above, a high-strength mold is required for each product of various shapes, which increases mold costs. Because it is hardened into a shape, productivity is low and mass production is not possible.

In view of these circumstances, the present invention aims to provide a method for producing intermetallic compounds that can reduce production costs and improve productivity.

[Means for Solving the Problems] The present invention involves alternately polymerizing and cold-rolling two types of ultrathin metal plates to form a laminate, cold-working the laminate, and simultaneously or simultaneously with the processing. It is characterized by post-heating.

[Function] Therefore, since the laminate is formed by laminating and rolling extremely thin plates of different metals, the laminate can be formed by hot working the laminate or by heating it after cold working. A diffusion layer is formed on the polymerized surface of the ultra-thin metal plates that make up the material, and intermetallic compounds are generated.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in Figure 1, AI is made into an ultra-thin plate of 0.1 mm or less.
Coils 1 and 2 are prepared by winding C aluminum) and Ti (titanium), respectively. Three coils 1 and 2 are arranged alternately and unwound, and the ultra-thin plate is passed through a surface purifier 3 and heated with trichlorethylene. After cleaning with steam etc. to remove adhering oil etc. and polishing the surface of the ultra-thin plates, the six ultra-thin plates are pressed together in a cold rolling machine 4 to form a laminate consisting of six metal layers. A plate 5 is produced, and the laminated plate 5 is wound onto a reel to make a laminated plate coil 6.

The laminated plate coils 6 are lined up and down in 6 rows as described above and unwound, the laminated plates 5 are cleaned and polished using the surface cleaner 3, the laminated plates 5 are further pressed into contact with the cold rolling machine 4, and A laminated plate 5, that is, a laminated plate 5° consisting of 36 ultra-thin plates is prepared, and the laminated plate 5° is wound onto a reel to form a laminated plate coil 6.
Create °.

Furthermore, the above-mentioned operation is repeated again using the laminate coil 6°, a laminate 5" consisting of a total of 218 ultra-thin plates is produced by cold rolling, and the laminate 5" is wound on a reel to form a laminate. The coil is 6".

Here, the reason why the ultra-thin plate is passed through the cold rolling mill 4 three times is that if rolling is repeated more than this, work hardening of the ultra-thin plate becomes severe and annealing becomes necessary.

The laminated plate coil 6'' is unwound, the laminated plate 5'' is blanked to form a flat plate 7 of a desired shape, and the flat plate 7 is hot-pressed in a hot press 8 to form a product 9.

As a result, during heating, a diffusion layer is formed on each mating surface of the flat plate 7, that is, the laminate plate 5'', and an intermetallic compound is generated.In forming each diffusion layer, the laminate plate 5'' is formed by forming a large number of ultra-thin plates of different metals. Since it has a laminated and rolled structure, the contact area between dissimilar metals is large, and the overall diffusion rate can be increased as well as the diffusion layer formation rate.Furthermore, the diffusion layer can be made uniform over the entire plate thickness. and generated. In this way, the heat resistance and abrasion resistance of the product 9 are dramatically improved.

If the temperature during the hot pressing is set to such a level that the alloy does not melt or to a temperature that partially melts the alloy, it is possible to generate an intermetallic compound. By controlling the formation ratio of intermetallic compounds by changing conditions such as the thickness of the ultra-thin plates constituting the product, a product 9 having desired characteristics can be obtained.

FIG. 2 shows another embodiment of the present invention, in which a pretreatment process such as cleaning, polishing, and multiple winding of an ultrathin plate is performed, followed by a pressing and rolling process, and then a forming process. This is what I did. That is, the coils 1.2, each made of A1 and Ti ultra-thin plates, are unwound and arranged vertically, passed through a surface cleaner 3 to clean and polish the ultra-thin plates, and the ultra-thin plates are polymerized. Wind it to create a coil,
By repeating the same operation as described above seven times using the coil thus produced, a multi-wound coil 10 in which a total of 128 ultrathin plates of AI and Ti are alternately superposed is produced.

The multi-wound coil IO is unwound and passed through a cold rolling mill 4,
The laminated plate 11 is wound up to create a laminated plate coil 12 consisting of a total of 128 extremely thin plates.

The laminated plate coil 12 is unwound, the laminated plate 11 is cut into a flat plate 13 of a desired shape, and the flat plate 13 is hot pressed into a hot press 14.
The product 15 is formed by hot pressing at a temperature at which the largest alloy does not melt or partially melts.

In these other examples as well, a diffusion layer is formed during hot press forming on the overlapping surface of the ultrathin plates constituting the flat plate 13, and intermetallic compounds are generated, resulting in excellent heat resistance and wear resistance. In addition, it is possible to obtain products that have the same characteristics as before, and the production speed can be improved.

In the above-mentioned two examples, hot pressing was performed by hot pressing, but after the blanked or cut laminate was formed into the desired shape by cold pressing,
It may be placed in a furnace and heated to generate an intermetallic compound on each mating surface of the laminate.Alternatively, instead of the combination of AI and Ti, a combination of Ni, Ti, Fe (iron) and Ti may be used.
It is also possible to use a combination of the following.

[Effects of the Invention] As described above, according to the present invention, metal is not made into powder,
Because it is heated simultaneously or after processing as a laminate, a mold for metal powder is not required, reducing manufacturing costs, improving workability, allowing mass production of products in desired shapes, and expanding applications. It can produce excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a process explanatory diagram showing one embodiment of the present invention, and FIG. 2 is a process explanatory diagram showing another embodiment of the present invention. 1.2 is a coil, 3 is a surface purifier, 4 is a cold rolling machine, 5
", 11 is a laminate plate, 6", 12 is a laminate coil, 7.1
3 is a flat plate, 8 and 14 are hot presses, and 9 and 15 are products.

Claims (1)

[Claims] 1) An intermetallic compound material characterized in that two types of ultrathin metal plates are alternately polymerized and cold-rolled to form a laminate, and the laminate is cold-worked and heated at the same time as processing or after processing. manufacturing method.