CN104988370A

CN104988370A - Aluminium alloy

Info

Publication number: CN104988370A
Application number: CN201510378121.4A
Authority: CN
Inventors: 干建鑫
Original assignee: Yuyao City Langxia Town Dazhong Casting Precision Factory
Current assignee: Yuyao City Langxia Town Dazhong Casting Precision Factory
Priority date: 2015-06-29
Filing date: 2015-06-29
Publication date: 2015-10-21

Abstract

The invention provides an aluminium alloy. The aluminium alloy comprises the following ingredients by weight: 2-6% of Si, 1-3% of Fe, 5-8% of Cu, 1-1.5% of Ti, 2-5% of Zn, 0.1-0.5% of Cr, 0.1-0.2% of Ce and the balance of Al and impurities with the content of less than or equal to 1%. The aluminium alloy has the advantages that surface cold shut and cracks are reduced, the ductility is good, and the elongation and the impact ductility are improved.

Description

Aluminium alloy

Technical field

The present invention relates to a kind of aluminium alloy.

Background technology

Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, widely applies in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry.The develop rapidly of industrial economy, increasing to the demand of Welded structural part, make the Research on Weldability of aluminium alloy also thereupon deeply.Aluminium alloy density is low, but strength ratio is higher, close to or exceed high-quality steel, plasticity is good, can be processed into various section bar, has excellent electroconductibility, thermal conductivity and corrosion stability, industrially widely uses, and usage quantity is only second to steel.Some aluminium alloys can adopt thermal treatment to obtain good mechanical property, physicals and corrosion resistance.Duralumin belongs to AI-Cu-Mg system, general containing a small amount of Mn, heat-treatable strengthened. be characterized in that hardness is large, but plasticity is poor.Ultralumin belongs to Al mono-Cu-Mg-Zn system, heat-treatable strengthened, is the aluminium alloy that under room temperature, intensity is the highest. but corrosion-resistant, hot mastication is fast.Forging aluminium alloy mainly Al-Zn-Mg-Si system alloy, although addition element kind is many, content is few, thus has excellent thermoplasticity, suitable forging, therefore also known as reflectal.Existing aluminium alloy crackle is many, extends rate variance.

Summary of the invention

(1) technical problem that will solve

The problem to be solved in the present invention is to provide a kind of aluminium alloy, many to overcome aluminium alloy crackle in prior art, extends the defect of rate variance.

(2) technical scheme

For solveing the technical problem, the invention provides a kind of aluminium alloy, composition is made up of the component of following weight per-cent: silicon 2 ~ 6%, iron 1 ~ 3%, copper 5 ~ 8%, titanium 1 ~ 1.5%, zinc 2-5%, chromium 0.1-0.5%, cerium 0.1 ~ 0.2%; Surplus is the impurity of aluminium and content≤1%.

Further, described silicon 3 ~ 4%, iron 2 ~ 2.5%, copper 6 ~ 7%, titanium 1.2 ~ 1.3%, zinc 3-4%.

(3) beneficial effect

Aluminium alloy of the present invention, surperficial cold shut, crackle reduce, good percentage elongation, improve elongation and impelling strength.

Embodiment

Below in conjunction with embodiment, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.

A kind of aluminium alloy of the present invention, composition is made up of the component of following weight per-cent: silicon 2 ~ 6%, iron 1 ~ 3%, copper 5 ~ 8%, titanium 1 ~ 1.5%, zinc 2-5%, chromium 0.1-0.5%, cerium 0.1 ~ 0.2%; Surplus is the impurity of aluminium and content≤1%.

Preferred silicon 3 ~ 4%, iron 2 ~ 2.5%, copper 6 ~ 7%, titanium 1.2 ~ 1.3%, zinc 3-4%, its surperficial cold shut, crackle reduce, good percentage elongation, and elongation improves 20%, and impelling strength improves 20%, and tensile strength is increased to 235MPa ~ 245MPa.

In sum, above-mentioned embodiment is not restricted embodiment of the present invention, and the modification that all those skilled in the art carry out on the basis of flesh and blood of the present invention or equivalent deformation, all at technology category of the present invention.

Claims

1. an aluminium alloy, composition is made up of the component of following weight per-cent: silicon 2 ~ 6%, iron 1 ~ 3%, copper 5 ~ 8%, titanium 1 ~ 1.5%, zinc 2-5%, chromium 0.1-0.5%, cerium 0.1 ~ 0.2%; Surplus is the impurity of aluminium and content≤1%.

2. aluminium alloy according to claim 1, is characterized in that: described silicon 3 ~ 4%, iron 2 ~ 2.5%, copper 6 ~ 7%, titanium 1.2 ~ 1.3%, zinc 3-4%.