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Lamellar high-strength light titanium-aluminum composite plate and preparation method thereof

A composite plate, titanium-aluminum technology, applied in the layered high-strength and light field, can solve the problems of difficult to eliminate stress, affect the use, and the quality of explosive bonding is difficult to meet the requirements, and achieve the effect of improving the explosive composite conditions

Active Publication Date: 2017-04-26
有研金属复材技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the high-strength titanium alloy and the aluminum alloy plate are directly explosively welded in order to achieve high strength requirements, due to the large performance difference between the two, the quality of the explosive combination 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A 2.25mm TA18 / LY12 titanium-aluminum composite plate is characterized in that the thickness of TA18 is 0.75mm, the thickness of aluminum alloy LY12 is 1.5mm, and the thickness ratio of TA18 layer and LY12 layer is 1:2. A preparation method for 2.25mm layered TA18 / LY12 composite board, comprising the steps of:

[0021] (1) Select annealed soft TA18 and LY12 plates as explosive blanks, TA18 plate specifications are 500mm long × 500mm wide × 1.5mm thick, LY12 plate specifications are 550mm long × 550mm wide × 3mm thick, and the two sides of the TA18 plate Coated with 0.1-0.3mm thick pure titanium, elongation > 45%, LY12 plate covered with 0.2-0.5mm thick pure aluminum, elongation > 25%;

[0022] (2) Mechanically polish the TA18 plate without any oxide on the surface, and pickle and passivate the LY12 plate;

[0023] (3) Explosively weld the processed TA18 and LY12 plates. The explosive welding uses ammonium nitrate mixed explosives. The support is made of pure aluminum o...

Embodiment 2

[0028] A 4mm TA18 / LY12 titanium-aluminum composite plate is characterized in that the thickness of TA18 is 1.3mm, the thickness of aluminum alloy LY12 is 2.7mm, and the thickness ratio of TA18 layer and LY12 layer is roughly 1:2. A kind of preparation method of 4mm laminated TA18 / LY12 composite plate, comprises the steps:

[0029] (1) Select annealed soft TA18 and LY12 plates as explosive blanks, TA18 plate specifications are 500mm long × 500mm wide × 2.5mm thick, LY12 plate specifications are 550mm long × 550mm wide × 5.0mm thick; the two sides of the TA18 plate Coated with 0.1-0.3mm thick pure titanium, elongation > 45%, LY12 plate coated with 0.2-0.5mm thick pure aluminum on both sides, elongation > 25%;

[0030] (2) Mechanically polish the TA18 plate without any oxide on the surface, and pickle and passivate the LY12 plate

[0031] (3) Explosively weld the processed TA18 and LY12 plates. The explosive welding uses ammonium nitrate mixed explosives. The support is made of...

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Abstract

The invention discloses a lamellar high-strength light titanium-aluminum composite plate and a preparation method thereof, and belongs to the technical field of preparation and machining of lamellar composite materials. The composite plate is composed of an LY12 aluminum alloy base layer and a TA18 titanium alloy coating layer, and the thickness ratio between the TA18 layer and the LY12 layer is 1:2. The preparation method for the lamellar titanium-aluminum composite plate includes the following steps of (1) selection of raw materials, (2) surface treatment of the raw materials, (3) explosive welding, (4) softening annealing, (5) cold rolling machining and (6) heat treatment and leveling. The lamellar high-strength light TA18 / LY12 titanium-aluminum composite plate prepared in the invention is good in mechanical performance and can be actually applied in the fields of aviation and aerospace equipment, weaponry and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation and processing of layered composite materials, and in particular relates to a layered high-strength, light-weight [0002] High-quality titanium-aluminum composite plate and its preparation method. Background technique [0003] Titanium alloy has the advantages of low density, high specific strength, corrosion resistance, high temperature impact resistance, etc., but the price is relatively high. Aluminum alloy has low specific gravity and low price, but its strength and high temperature resistance are poor. If the advantages of the two can be combined, a high-strength and light-weight structural plate can be prepared, which can be applied in many fields such as aviation, aerospace, transportation, and protection. Due to the large difference in properties between titanium alloy and aluminum alloy, how to combine them well and achieve high strength and formability has become an urgent problem...

Claims

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Application Information

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IPC IPC(8): B23K20/08B23K103/18
Inventor 胡捷李德富彭海健
Owner 有研金属复材技术有限公司