CN103952590A

CN103952590A - Rare-earth aluminum-zinc alloy containing silicon and manganese and modification process of alloy

Info

Publication number: CN103952590A
Application number: CN201410206785.8A
Authority: CN
Inventors: 王新海
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-12
Filing date: 2014-05-12
Publication date: 2014-07-30

Abstract

The invention discloses a rare-earth aluminum-zinc alloy containing silicon and manganese and a modification process of the alloy and relates to the technical field of alloy materials. The rare-earth aluminum-zinc alloy comprises the following components in percentage by mass: 68%-70% of zinc, 17%-18% of aluminum, 4.2%-4.8% of copper, 0.8%-1.2% of magnesium, 0.15%-0.25% of rare earths, 3.5%-4.5% of silicon and 0.1%-0.3% of manganese. Due to the addition of a silicon/manganese alloy, the aluminum-zinc alloy disclosed by the invention has the advantages that tensile strength is increased by 100Mpa, the compressive strength is increased by 70Mpa, elongation is increased by 4%, the weight is reduced by 1/cm<2> and the maximum temperature is also increased by 20 DEG C compared with the rare earth zinc aluminum alloys besides the performances of rare earth zinc aluminum alloys, the yield strength and density of the alloy are improved, corrosion resistance and strength are greatly improved, ductility and toughness are also improved, the service life is long, the heat transfer is faster, the comprehensive mechanical properties and process performance are good, stability is high, a coefficient of linear expansion is low, and the alloy is not subjected to any heat treatment and can be used directly after the machining is finished.

Description

A kind of rare-earth-Al-Zn alloy and modification process thereof containing silicomanganese

Technical field

The present invention relates to technical field of alloy material, be specifically related to a kind of rare-earth-Al-Zn alloy and modification process thereof containing silicomanganese.

Background technology

High aluminium zinc alloy is to take zinc as basis, to add the non-ferrous alloy of a certain amount of Al and Cu and micro-Mg.The rich zinc of China lacks copper, and using high aluminium zinc alloy to replace copper alloy made Wear-resistant part is its main purposes.Stay German doctor Zhu Yaohua and provide a kind of type material to Shanghai Tongji University, Shanghai Tongji University people doctor Yan Biao is for group leader, the Chinese personnel such as encourages and on the basis of aluminium zinc, has added rare earth element, invented a kind of novel rare-earth-Al-Zn alloy, rare earth element is as the important alloy element of non-ferrous metal, molten metal is had to good degasification, purification, refining effect, so rare-earth-Al-Zn alloy has good mechanical property.

Silicon is important alloying element, can reinforced ferrite and improve the electromagnetic property of steel, put forward heavy alloyed toughness, manganese is a kind of transition metal, in alloy, play the effect that increases hardness, the present invention is directed to rare-earth-Al-Zn alloy and produce, apply present situation, by silicomanganese composition is added in rare-earth-Al-Zn alloy by a certain percentage, develop a kind of rare-earth-Al-Zn alloy containing silicomanganese.

Summary of the invention

The invention provides a kind of rare-earth-Al-Zn alloy containing silicomanganese, further to improve mechanical property and the processing performance of rare-earth-Al-Zn alloy.

The technical solution adopted for the present invention to solve the technical problems is:

A rare-earth-Al-Zn alloy containing silicomanganese, by mass percentage, comprises following component:

Zinc: 68%～70%;

Aluminium: 17%～18%;

Copper: 4.2%～4.8%;

Magnesium: 0.8%～1.2%;

Rare earth: 0.15%～0.25%;

Silicon: 3.5%～4.5%;

Manganese: 0.1%～0.3%.

Preferably, above-mentioned zinc, aluminium, copper, magnesium, silicon, manganese are electrolytic metal, can guarantee the purity of aluminium-zinc alloy, can guarantee, not containing boring, therefore, to have radiation-resistant advantage.

A modification process containing the rare-earth-Al-Zn alloy of silicomanganese adds zinc, aluminium, copper, magnesium and rare earth according to formula rate in electric furnace, when add total amount 30% after, then add silicon and manganese component, a little higher than teeming temperature of temperature in electric furnace; Aluminium alloy oxide on surface and slag inclusion are taken in refining off after 20 minutes, spread uniformly the In Powdered Aluminium alloy inoculant that one deck accounts for aluminium alloy quality 2%～3%, keep 10-20 minute pourable.

Aluminium-zinc alloy of the present invention, when possessing rare-earth-Al-Zn alloy performance, has also increased incorporating of silicon, manganese alloy, than rare-earth-Al-Zn alloy tensile strength, has increased 100Mpa, and ultimate compression strength has increased 70Mpa, and unit elongation has increased by 4%, light specific gravity 1/cm ²top temperature has also increased by 20 ℃, yield strength and the density of alloy have been improved, erosion resistance and intensity improve greatly, toughness plasticity has also obtained improvement, and the life-span is long, heat transfer is fast, good comprehensive mechanical property and processing performance, higher stability, linear expansivity is less, and alloy itself need not any thermal treatment, processes and can use.

Embodiment

Below in conjunction with specific embodiment, the present invention is described in further detail.

Zinc: 68%～70%;

Aluminium: 17%～18%;

Copper: 4.2%～4.8%;

Magnesium: 0.8%～1.2%;

Rare earth: 0.15%～0.25%;

Silicon: 3.5%～4.5%;

Manganese: 0.1%～0.3%.

Above-mentioned zinc, aluminium, copper, magnesium, silicon, manganese are electrolytic metal, can guarantee the purity of aluminium-zinc alloy, can guarantee, not containing cobalt, therefore, to have radiation-resistant advantage.

Claims

1. containing a rare-earth-Al-Zn alloy for silicomanganese, it is characterized in that by mass percentage, comprise following component:

Zinc: 68%～70%;

Aluminium: 17%～18%;

Copper: 4.2%～4.8%;

Magnesium: 0.8%～1.2%;

Rare earth: 0.15%～0.25%;

Silicon: 3.5%～4.5%;

Manganese: 0.1%～0.3%.

2. the rare-earth-Al-Zn alloy containing silicomanganese according to claim 1, is characterized in that zinc, aluminium, copper, magnesium, silicon, manganese are electrolytic metal.

3. the modification process of the rare-earth-Al-Zn alloy containing silicomanganese claimed in claim 1, it is characterized in that in electric furnace, adding zinc, aluminium, copper, magnesium and rare earth according to formula rate, when add total amount 30% after, then add silicon and manganese component, a little higher than teeming temperature of temperature in electric furnace; Aluminium alloy oxide on surface and slag inclusion are taken in refining off after 20 minutes, spread uniformly the In Powdered Aluminium alloy inoculant that one deck accounts for aluminium alloy quality 2%～3%, keep 10-20 minute pourable.