Rolling preparation method for improving interface bonding strength of lamellar aluminum-titanium composite through nano-metal powder

Abstract

The invention provides a rolling preparation method for improving the interface bonding strength of a lamellar aluminum-titanium composite through nano-metal powder. According to the rolling preparation method, a titanium alloy strip material and an aluminum alloy strip material are machined to be at the same dimension, surface treatment is conducted so as to remove surface oxides, nanometer particles are arranged on the treated surfaces, stacking is conducted, so that a titanium / aluminum composite strip material is obtained, vacuum edge welding is conducted on the titanium / aluminum compositestrip material, a pulse current is exerted to the welded titanium / aluminum composite strip material so as to enable the nanometer particles and a local area of the surface of the composite strip material to conduct electric discharge, and surface metal is molten; then, rolling is conducted on the titanium / aluminum composite strip material, and material interface welding bonding is achieved; and finally, rolling continues until the total reduction rate of the strip material reaches 80%-95%. By the adoption of the rolling preparation method, the high-performance titanium / aluminum composite stripmaterial can be prepared. The plate material has the potential to be applied to the bulletproof protection field, the aerospace field, the sound insulation and noise reduction field, the automobile weight reduction field and the like. The rolling preparation method may be used for preparing composite strip materials composed of other nonferrous metal materials such as copper and magnesium in thefuture.

Description

technical field [0001] The invention belongs to the technical field of rolling metal composite materials, and in particular relates to a rolling preparation method for improving the interfacial bonding strength of layered aluminum-titanium composite materials by using nanometer metal powder. Background technique [0002] High-performance layered aluminum-titanium composite materials have been highly concerned by domestic and foreign counterparts in this field, and they have broad application prospects in the fields of bulletproof protection, aerospace, sound insulation and noise reduction, and automobile lightweight. The interface welding condition of layered composite materials during plastic deformation determines the mechanical and corrosion properties of the product. [0003] Traditional metal layered composite panels generally use the explosion method. However, the material interface quality is difficult to control. At the same time, this process is only suitable for ...

AI Technical Summary

Problems solved by technology

Rolling cladding is a commonly used method. Generally, there are hot rolling cladding method and cold rolling cladding method. It is relatively difficult to control the interface bonding quality of metal clad plates prepared by these two methods. Such products can only meet the low-end market. The main reason is that the interface of these products is a combination of mechanical welding and metallurgical welding, and there is still a big difference between its strength and complete metallurgical bonding.

Images