CN103265757A

CN103265757A - Novel alloy

Info

Publication number: CN103265757A
Application number: CN2013102125030A
Authority: CN
Inventors: 江邦寿
Original assignee: CHUZHOU HAOYU SLIDING BEARINGS Ltd
Current assignee: CHUZHOU HAOYU SLIDING BEARINGS Ltd
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2013-08-28
Anticipated expiration: 2033-05-31
Also published as: CN103265757B

Abstract

The invention relates to novel alloy. The novel alloy consists of main components and auxiliary components, wherein the main components consist of the following components in percentage by weight: 15%-25% of magnesium, 8%-16% of aluminum, 5%-10% of lithium, 1%-3% of cobalt, 5%-10% of nickel, 1%-5% of vanadium, 1%-2% of boron, 5%-8% of silicon and 0.5%-1% of titanium; the auxiliary components consist of the following components in percentage by weight: 25%-35% of polypropylene, 15%-25% of a lubricating agent, 10%-15% of inorganic minerals, wherein the melt flow rate of the polypropylene is 50g/minute. Compared with the prior art, the novel alloy has the advantages that (1), the magnesium alloy is not only lower in cost, but also simple in production process, easy to operate and control; (2), the magnetic alloy has better corrosion resistance, higher strength and certain flame resistance, and is relatively stable and capable of satisfying the requirements of electronic products, mechanical products and the like to a certain extent; and (3), the novel alloy has yield strength of 500MPa-600MPa, tensile strength of 1000MPa-1100MPa, HR30T70-HR30T78, and is suitable for rolling and forming of a building and electronic and mechanical machining and manufacturing with high hardness requirements, and good in bending performance.

Description

Novel alloy

Technical field

The present invention relates to the alloy field, be specifically related to a kind of novel alloy and preparation method thereof.

Background technology

Magnesium is the lightest structured material, meets environmental protection, energy-conservation requirements such as less energy-consumption, thereby often is used to prepare alloy at industrial circles such as automobile, electronics, aviations.But the magnesium fusing point is low, easy firing, thereby the alloy that is prepared by magnesium self burning easily when temperature is near its burning-point, presence of fire danger.At present the material supply section that meets of preparation anti-flaming function commonly used is divided into compound, coating type and sandwich type three classes, above-mentioned three classes are respectively to add fire retardant in alloy, plate and on the alloy therebetween at alloy surface, but fire retardant mostly is toxic substance, and its use range of alloy that is prepared by this method is subjected to serious restriction.Although magnesium alloy is pursued well with the light ductility of its quality, owing to magnesium itself can react with water, air, so the magnesium alloy majority is not corrosion-resistant, and it can not use in harsh environment; Secondly, magnesium alloy can not satisfy the requirement of each side such as metallurgy, electronics, aviation in the prior art aspect wear-resisting, intensity and tension, therefore, limited the promotion and application of magnesium alloy to a certain extent.

Summary of the invention

The defective of the present invention in order to solve that magnesium alloy is inflammable and perishable, not wear-resisting, intensity is low etc. the invention provides a kind of novel alloy.Added boron and titanium in the technical program, the boron of trace forms BN in alloy, and poly-partially at austenite grain boundary, is conducive to reduce the alloy phase height.Ti is very strong solid N element, utilize the Ti fixing N below 0.006% in the steel just about 0.5%, form the TiN precipitated phase of tiny high-temperature stable, austenite crystal when this tiny TiN particle can hinder high temperature is effectively grown up, also help to improve the solid solubility of Nb in austenite, thus the strengthening effect that has improved alloy indirectly.

To achieve these goals, technical scheme of the present invention is achieved in that

A kind of novel alloy, it is characterized in that, described alloy is made up of main component and ancillary component, described main component is composed of the following components according to mass percent: magnesium 15-25%, aluminium 8-16%, lithium 5-10%, cobalt 1-3%, nickel 5-10%, vanadium 1-5%, boron 1-2, silicon 5-8%, titanium 0.5-1%, ancillary component is composed of the following components according to mass percent: polipropene 25-35%, lubricant 15-25%, inorganic mineral 10-15%, described polyacrylic melt flow rate (MFR) is 50g/min.

As a kind of improvement of the present invention, described lubricant is a kind of in silicon ester, the phosphoric acid ester.

As a kind of improvement of the present invention, described inorganic mineral is wollastonite.

As a kind of improvement of the present invention, described main component is composed of the following components according to mass percent: magnesium 18%, aluminium 13%, lithium 8%, cobalt 2%, nickel 8%, vanadium 3%, boron 1, silicon 6%, titanium 1%, ancillary component is composed of the following components according to mass percent: polypropylene 20%, lubricant 10%, inorganic mineral 10%, described polyacrylic melt flow rate (MFR) is 50g/min.

A kind of novel alloy, its preparation method comprises the steps:

(1) with described raw material, magnesium, aluminium, lithium, cobalt, nickel, vanadium, boron, silicon, titanium add even the stirring 10 minutes in the stirrer successively, carry out the melting of vacuum Medium frequency induction after stirring again, pour into a mould ingot casting, be milled into the Nanoalloy powder;

(2) with the Nanoalloy powder for preparing, with polypropylene, lubricant, inorganic mineral mixes, wherein earlier with 1/2nd polypropylene, a lubricant of/2nd, an inorganic mineral of/3rd mixes stirring 10 minutes, be heated to 150-180 °, again with remaining 1/2nd polypropylene, 1/2nd lubricant, 2/3rds inorganic mineral adds successively, use agitator to stir with 50 rev/mins speed, continue to be heated to 180-190 °, obtained Nanoalloy powder-polypropylene-inorganic mineral mixed solution in 30 minutes;

(3) with after the above-mentioned mixed solution homogenizing cast ingot, be that melting mixing is disperseed in the duplex bar forcing machine of 40:1 in length-to-diameter ratio, extrude difform alloy according to demand, described melt mix temperature is 190 ℃.

With respect to prior art, advantage of the present invention is as follows, 1) not only cost is lower for this magnesium alloy, and production technique simple, be easy to operate and control; 2) this magnesium alloy is corrosion-resistant better, intensity is higher, and has certain flame retardant resistance, more stable, satisfied the requirement of electronic product, engineering goods etc. to a certain extent, 3) this novel alloy yield strength is 500-600 MPa, tensile strength 1000-1100 MPa, HR30T 70-78, be applicable to electronics, mechanical workout making that building roll forming and high rigidity require, buckling performance is good.

Embodiment

Describe in further detail below in conjunction with the present invention of embodiment.Each components contents is weight percentage among the following embodiment except indicating especially

Embodiment 1

1.1 the preparation of novel alloy

(1) takes by weighing according to mass percent: magnesium 15%, aluminium 10%, lithium 5%, cobalt 3%, nickel 10%, vanadium 1%, boron 1%, silicon 5%, titanium 1%, add successively in the stirrer and evenly stirred 10 minutes, carry out the melting of vacuum Medium frequency induction after stirring again, pour into a mould ingot casting, be milled into the Nanoalloy powder;

(2) with the Nanoalloy powder for preparing, with polypropylene 24%, lubricant 16%, inorganic mineral 9% mixes, wherein earlier with 1/2nd polypropylene, a lubricant of/2nd, an inorganic mineral of/3rd mixes stirring 10 minutes, be heated to 150-180 °, again with remaining 1/2nd polypropylene, 1/2nd lubricant, 2/3rds inorganic mineral adds successively, use agitator to stir with 50 rev/mins speed, continue to be heated to 180-190 °, obtained Nanoalloy powder-polypropylene-inorganic mineral mixed solution in 30 minutes;

1.2 the erosion resistance of novel alloy

1.2.1 experimental group and control group are set:

The novel alloy that experimental group: embodiment 1 prepares

Control group 1:AS41B magnesium alloy

1.2.2 configuration solution and measuring method

Method according to ISO10271 is prepared pickling solution, namely adds (10.0 ± 0.1) g 90%C3H6O3(analytical pure in 300 mL distilled water) and (5.85 ± 0.005) g NaCl, then solution dilution to (1 000 ± 10) mL, pH is 2.3.

According to the standard of the corresponding 1 mL pickling solution of every square centimeter of alloy, add 6.5 mL pickling solutions in each Glass Containers; Tried in the vial that alloy is positioned over liquid feeding sealing with above-mentioned three groups; Take out censorship after in 37 ℃ constant water bath box, placing 7 d; (inductively coupled plasma atomicemission spectroscopy ICP-AES) measures magnesium ion concentration in each test tube to adopt inductive coupling plasma emission spectrograph.

Organized by examination	Experimental group	Control group 1
			Magnesium density g/l	0	（158.1±48.6）×10 ^-6

1.3 the flame retardant effect of novel alloy.

Method with embodiment 1 prepares the novel alloy of sheet as experimental group, the AS41B magnesium alloy is organized 2 in contrast, above-mentioned two kinds of alloys are melted respectively at crucible, utilize EVOC PCI DAS temperature acquisition card collecting temperature, utilize computer to determine combustion initiation temperature.

Organized by examination	Experimental group	Control group 2
			Combustion initiation temperature	930℃	420℃

1.4 the hardness of novel alloy

As experimental group, the AS41B magnesium alloy is organized 2 in contrast with the wear resistant alloy of the method for embodiment 1 preparation, surveys two groups of hardness of alloy respectively and stretch slightly, contrast as follows:

Organized by examination	Experimental group	Control group 2
			Hardness	30HRC	18HRC
Tensile strength	1000—1100MPa	600 MPa
			Yield strength	500—600 MPa	400 MPa

1.5 result

As can be seen, the novel alloy of embodiment 1 preparation have good anti-corrosion and flame retardant effect, and its wear resistance is better, and hardness is higher, and range of application is more extensive.

Embodiment 2

Preparation method is identical with disclosed mode among the embodiment 1, but the main component of the alloy in the present embodiment is composed of the following components according to mass percent: magnesium 22%, aluminium 8%, lithium 5%, cobalt 1%, nickel 6%, vanadium 1%, boron 1%, silicon 5.5%, titanium 0.5%, ancillary component is composed of the following components according to mass percent: polipropene 25 %, phosphoric acid ester 15%, wollastonite 10%.

Embodiment 3

Preparation method is identical with disclosed mode among the embodiment 1, but the main component of the alloy in the present embodiment is composed of the following components according to mass percent: magnesium 18%, aluminium 13%, lithium 8%, cobalt 2%, nickel 8%, vanadium 3%, boron 1, silicon 6%, titanium 1%, ancillary component is composed of the following components according to mass percent: polypropylene 20%, phosphoric acid ester 10%, wollastonite 10%.

The above; only be to preferred embodiment of the present invention; be not that the present invention is done other forms of restriction; any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equal variation; every disengaging the present invention program content; according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and remodeling all drop in protection scope of the present invention.

Claims

1. wear resistant alloy, it is characterized in that, described alloy is made up of main component and ancillary component, described main component is composed of the following components according to mass percent: magnesium 15-25%, titanium 8-13%, lithium 10-15%, cobalt 1-5%, nickel 10-25%, manganese 3-5%, yttrium 0.5-2%, tungsten 5-10%, vanadium 1-5%; Ancillary component is composed of the following components according to mass percent: polypropylene 10%-20%, and lubricant 1-10%, inorganic mineral 1-10%, described polyacrylic melt flow rate (MFR) is 70g/min.

2. wear resistant alloy according to claim 1 is characterized in that, described lubricant is a kind of in silicon ester, the phosphoric acid ester.

3. wear resistant alloy according to claim 1 is characterized in that, described mineral substance is wollastonite.

4. according to the described wear resistant alloy of claim 1-3, it is characterized in that described main component is composed of the following components according to mass percent: magnesium 20%, titanium 10%, lithium 12%, cobalt 3%, nickel 15%, manganese 4%, yttrium 1%, tungsten 8%, vanadium 3%; Ancillary component is composed of the following components according to mass percent: polypropylene 15%, lubricant 5%, inorganic mineral are 4%.

5. according to the described wear resistant alloy of claim 1-3, its preparation method comprises the steps:

(1) according to the quality proportioning of mentioned component, earlier with magnesium, titanium, lithium, cobalt, nickel, manganese, yttrium, tungsten, vanadium mix the back and stir, after stirring in a vacuum frequently induction melting, pour into a mould ingot casting, be milled into the Nanoalloy powder;

(2) with the Nanoalloy powder for preparing, with 1/2nd polypropylene, 1/3rd lubricants, 1/2nd inorganic mineral, mix, use agitator to stir with 30-50 rev/mins speed,

(3) stir after 20 minutes, add 1/2nd polypropylene successively, 2/3rds lubricants, 1/2nd inorganic mineral, Heating temperature to 150-200 a ° stirring obtained Nanoalloy powder-polypropylene-inorganic mineral mixed solution in 15-25 minutes;

(4) with after the above-mentioned mixed solution homogenizing cast ingot, be that melting mixing is disperseed in the duplex bar forcing machine of 50:1 in length-to-diameter ratio, extrude difform alloy according to demand, described melt mix temperature is 180 ℃.

6. according to the purposes of the described wear resistant alloy of claim 1-3, it is characterized in that, for the preparation of wear-resisting container.