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Particle reinforced titanium-aluminum composite based on spinning deformation and preparation method thereof

A particle enhancement and spinning deformation technology, which is applied in manufacturing tools, welding equipment, welding equipment, etc., can solve the problems that the quality of explosion bonding is difficult to meet the requirements, the stress is difficult to eliminate, and the subsequent use is affected, so as to achieve the improvement of explosion composite conditions, The effect of improving plastic deformation ability and improving strength

Inactive Publication Date: 2017-04-26
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method directly performs explosive welding of high-strength titanium alloy and aluminum alloy plate. Due to the large performance difference between the two, the explosive bonding quality is difficult to meet the requirements, and the stress generated by the explosion will be difficult to eliminate, which will affect subsequent use.

Method used

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  • Particle reinforced titanium-aluminum composite based on spinning deformation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) The cold-rolled titanium alloy TA18 plate and aluminum alloy LY12 plate are used as the initial blanks for explosive welding. Among them, the TA18 plate is coated with 0.1mm thick pure titanium on both sides, the thickness is 0.75mm, the elongation is more than 45%, and the LY12 plate is two breads. Covered with 0.2mm thick pure aluminum, the thickness is 1.5mm, the elongation is greater than 25%, the TA18 plate is vacuum softened and annealed, the LY12 plate is annealed, the cold-rolled titanium alloy TA18 plate is mechanically polished, and the aluminum alloy LY12 is acidified Wash passivation treatment.

[0028] (2) Explosive welding of the treated TA18 and LY12 plates, the explosive welding adopts ammonium nitrate mixed explosive, and its composition is: ammonium nitrate mass percentage 60%, TNT mass percentage 3%, diesel mass percentage 1%, and the balance For sawdust, the explosive velocity is 2000m / s, the charge height is 15mm, the installation gap is 1mm, and t...

Embodiment 2

[0032] (1) The cold-rolled titanium alloy TA18 plate and aluminum alloy LY12 plate are used as the initial blanks for explosive welding. Among them, the TA18 plate is coated with 0.3mm thick pure titanium on both sides, the thickness is 1.3mm, the elongation is more than 45%, and the LY12 plate has two breads. Covered with 0.5mm thick pure aluminum, the thickness is 2.7mm, the elongation is greater than 25%, the TA18 plate is vacuum softened and annealed, the LY12 plate is annealed, the cold-rolled titanium alloy TA18 plate is mechanically polished, and the aluminum alloy LY12 is acidified Wash passivation treatment.

[0033] (2) Explosive welding of the treated TA18 and LY12 plates, the explosive welding adopts ammonium nitrate mixed explosive, and its composition is: ammonium nitrate mass percentage 80%, TNT mass percentage 10%, diesel mass percentage 10%, and the balance For sawdust, the explosive velocity is 4000m / s, the charge height is 30mm, the installation gap is 4mm, and...

Embodiment 3

[0037] (1) The cold-rolled titanium alloy TA18 plate and aluminum alloy LY12 plate are used as the initial blanks for explosive welding. Among them, the TA18 plate is coated with 0.2mm thick pure titanium on both sides, the thickness is 1.0mm, the elongation is more than 45%, and the LY12 plate has two breads Covered with 0.3mm thick pure aluminum, the thickness is 2.0mm, the elongation is greater than 25%, the TA18 plate is vacuum softened and annealed, the LY12 plate is annealed, the cold-rolled titanium alloy TA18 plate is mechanically polished, and the aluminum alloy LY12 is acidified Wash passivation treatment.

[0038] (2) Explosive welding of the processed TA18 and LY12 plates, the explosive welding adopts ammonium nitrate mixed explosive, and its composition is: ammonium nitrate mass percentage 70%, TNT mass percentage 5%, diesel mass percentage 4%, balance For sawdust, the explosive speed is 3000m / s, the charge height is 20mm, the installation gap is 2mm, and the gap sup...

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Abstract

The invention provides a particle reinforced titanium-aluminum composite based on spinning deformation and a preparation method thereof. The preparation method comprises the following steps that a cold-rolled titanium alloy TA18 plate and an aluminum alloy LY12 plate serve as initial blanks for explosive welding, the cold-rolled titanium alloy TA18 plate is mechanically polished, and the aluminum alloy LY12 plate is subjected to pickling and passivating treatment; and the treated TA18 plate and the treated LY12 plate are subjected to explosive welding, the TA18 plate is arranged below while the LY12 plate is arranged above, the surface of the LY12 plate is coated with heat-resisting grease serving as a protective layer, an ammonium nitrate explosive mixture is adopted for explosive welding, and then the TA18 plate and the LY12 plate are subjected to softening annealing, cold rolling machining, heat treatment strengthening and multi-roller leveling treatment to obtain a titanium-aluminum composite; and a titanium-aluminum composite plate serves as a spinning billet to be installed on a particle reinforcer core film, and the particle reinforced titanium-aluminum composite based on spinning deformation is obtained through a hot spinning blooming forging method. The titanium-aluminum composite prepared through the preparation method is high in strength, low in weight and excellent in comprehensive performance.

Description

Technical field [0001] The invention belongs to the technical field of metal composite material processing, and specifically relates to a particle-reinforced titanium-aluminum composite material based on spinning deformation and a preparation method thereof. Background technique [0002] Titanium aluminum alloy has low density, high specific strength, high specific rigidity, good heat resistance, high temperature creep resistance and oxidation resistance. It is a lightweight superalloy with the best comprehensive performance. It is used in aerospace, weaponry, etc. It has important applications and is the focus of research in light alloys. [0003] Titanium aluminum alloy can be divided into 3 kinds of Ti 3 -Al, Ti-Al and Ti-Al 3 , Where Ti-Al 3 It has the lowest density and the best resistance to high temperature oxidation. Titanium aluminum alloy is brittle at room temperature, lacks sufficient ductility, poor deformability, wear resistance, and low temperature oxidation resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08B23K37/00B23K103/18
CPCB23K20/08B23K37/00B23K2103/18
Inventor 王海燕
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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