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Process for producing intermetallic compound

An intermetallic compound and metal foil technology, which is applied in metal rolling, metal rolling, metal processing equipment and other directions, can solve the problems of difficult forming of intermetallic compound materials, and achieves elimination of internal defects, simple and reasonable preparation method, and room temperature brittleness. and high temperature strength and toughness improvement effect

Inactive Publication Date: 2008-07-16
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And can obtain larger-sized intermetallic compound plates with grain refinement characteristics, solving the problem that intermetallic compound materials are not easy to form

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Specification is the Fe of 75mm * 10mm * 1.25mm 3 Al intermetallic sheet. Using pure iron foil with Fe content of 99.98% and pure aluminum foil with Al content of 99.96% as raw materials, after the thickness selection of the initial raw material foil and the measurement of the actual layered thickness of the composite plate after warm rolling, the specifications of the actual raw material foil are determined It is: pure iron foil 15mm×12mm×0.027mm; pure aluminum foil 15mm×12mm×0.01mm. The two raw material foils are soaked in carbon tetrachloride solution for 5 minutes, then soaked in acetone solution for 5 minutes, taken out from the acetone solution, soaked in clean water for 5 minutes, and then dried to complete the degreasing and degreasing of the blank . After degreasing and degreasing, wash the aluminum foil with 5% NaOH solution at 30°C for 15 minutes, rinse it with running water, and wash it with 20% HNO at 20°C. 3 The solution was pickled for 5 ...

Embodiment 2

[0020] Embodiment 2: The process flow from the selection of the thickness of the raw material foil to obtaining the cold-rolled clad plate with Fe / Al layer flake characteristics is the same as that of Embodiment 1. The difference is that the clad plate after cold rolling is subjected to overall solid phase alloying heat treatment in a 15kW electric furnace, the heat treatment temperature is 450°C, and the heat treatment time is 1h. After the overall solid phase alloying treatment, the composite plate becomes a single and uniform Fe through diffusion and phase transformation. 3 The Al intermetallic compound plate has an average grain size of 12-18 μm. After testing, the Fe prepared by this method 3 The room temperature elongation of Al intermetallic compounds can reach 13-16%, the room temperature tensile strength can reach 700-750MPa, and the tensile strength at 600°C is 450-500MPa.

Embodiment 3

[0021] Embodiment 3: the specification is the Ni of 60mm * 10mm * 1.5mm 3 Al intermetallic sheet. Using pure nickel foil with a Ni content of 99.99% and pure aluminum foil with an aluminum content of 99.96% as raw materials, the specification of the actual raw material foil is determined after the thickness selection of the initial raw material foil and the measurement of the actual layered thickness of the composite plate after warm rolling It is: pure nickel foil 12mm×12mm×0.025mm; pure aluminum foil 12mm×12mm×0.01mm. The two raw material foils are soaked in carbon tetrachloride solution for 5 minutes, then soaked in acetone solution for 5 minutes, taken out from the acetone solution, soaked in clean water for 5 minutes, and then dried to complete the degreasing and degreasing of the blank . After degreasing and degreasing, wash the aluminum foil with 10% NaOH solution at 50°C for 10 minutes, rinse it with running water, and wash it with 20% HNO at 40°C. 3 The solution wa...

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Abstract

The invention relates to a preparation method of intermetallic compound, which is characterized in that iron foil, nickel foil or titanium foil and aluminum foil are adopted as raw materials; the preparation method comprises the steps are that: selecting raw foil material with consideration of the thickness of the raw foil material; defatting, degreasing and surface activation treating; alternative lapping of the treated foil; making rolling blank; warm rolling under heating temperature of 100-180 DEG C and 40-70 percent of rolling draft; edge cutting and cold rolling with 10-20 percent of rolling draft; heat treating of solid-phase alloying under temperature of 400-680 DEG C for 1-5 hours. The invention has the advantages that: the prepared intermetallic compound has uniform fine texture; average grain size is 2-20 Mum; room temperature brittleness and high temperature obdurability of the intermetallic compounds have been greatly improved. The invention overcomes the problem that intermetallic compound is difficult formed and has extensive industrial application value.

Description

technical field [0001] The invention relates to a preparation method of an intermetallic compound. Background technique [0002] Among the existing methods for preparing intermetallic compounds, the melting and casting metallurgy method has simple process, low product cost and high production efficiency, but the as-cast structure of the material obtained by this method has coarse grains and easy segregation of components. Powder metallurgy and particle combustion synthesis can effectively improve the mechanical properties of intermetallic compounds, but the cost is high, and it is difficult to prepare large blocks, which is not suitable for large-scale industrial production. Molten metal casting technology can obtain very stable Ti-Al intermetallic compounds, but its disadvantage is that the prepared intermetallic compounds have obvious anisotropy. The rapid solidification method can only prepare intermetallic compound thin strips with a thickness of 30-50 μm. SHS in-situ ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B47/00B21B37/58C21D9/70C21D9/46C21D11/00C23G5/00C23G5/02C23G1/14C23G1/02
Inventor 祖国胤于九明
Owner NORTHEASTERN UNIV LIAONING
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