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Light weight alloy material and preparation method thereof

A light alloy and mixed raw material technology, applied in the field of metal materials, can solve the problems of reducing the inertial mass of moving parts, low density of titanium and aluminum alloys, low specific gravity of magnesium elements, etc., to achieve improved mechanical properties, high tensile strength, Strong acid and alkali corrosion resistance

Inactive Publication Date: 2016-09-28
HUANGHE S & T COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, lightweight materials have low hardness, poor impact resistance, and low plasticity
[0003] Titanium alloys have the advantages of light weight, high strength, and good corrosion resistance. There are many benefits to using titanium alloys to manufacture engine parts. The low density of titanium and aluminum alloys can reduce the inertial mass of moving parts. At the same time, titanium valve springs can increase free vibration. , reduce the vibration of the body, increase the speed and output power of the engine, but the cost of titanium alloy is high
[0004] The invention title of Chinese patent CN 104404300A is "a new light alloy", which is composed of carbon, manganese, silicon, aluminum, nickel, molybdenum, iron and boron, and the invention has strong tensile strength and elongation , but poor corrosion resistance; the invention title of Chinese patent CN 102690979B is "an alloy material for light metal handicrafts and its preparation method", which is composed of magnesium, aluminum and zinc, and retains the characteristics of low density and light specific gravity of magnesium. It has good processability, but this invention is only suitable for the preparation of handicrafts, and its hardness is low

Method used

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  • Light weight alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A light alloy material containing the following components in weight percentage: Al 53%, Nb 3%, Sn 0.5%, C 0.01%, Sc 0.4%, W 0.02%, Mo 0.5%, Ni 0.06%, Cr 0.1%, Dy 0.02%, the unavoidable impurity content is less than 0.01%, and the balance is Ti.

[0027] Its preparation method comprises the following steps:

[0028] (1) Raw material pretreatment: put all raw materials in a drying oven, dry at 100°C for 30 minutes, dry, weigh each raw material according to the above ratio, and stir to obtain mixed raw materials for later use;

[0029] (2) Smelting: put the mixed raw material described in step (1) in a melting furnace, smelt at 660°C for 15 minutes under an argon atmosphere, continue heating at a rate of 15°C / min to 910°C, and smelt for 30 minutes;

[0030] (3) Refining: Cool the smelt obtained in step (2) to 486°C at a rate of 15°C / min, smelt for 1.0h, then raise the temperature to 600°C at a rate of 7°C / min, smelt for 1.5h, and continue to smelt at 7°C Raise the tempe...

Embodiment 2

[0034] A light alloy material containing the following components in weight percentage: Al 58%, Nb 3%, Sn 0.7%, C 0.01%, Sc 0.55%, W 0.03%, Mo 0.75%, Ni 0.1%, Cr 0.1%, Dy 0.025%, the unavoidable impurity content is less than 0.01%, and the balance is Ti.

[0035] Its preparation method comprises the following steps:

[0036] (1) Raw material pretreatment: put all the raw materials in a drying oven, dry at 160°C for 20 minutes, dry, weigh each raw material according to the above ratio, stir, and mix the raw materials for later use;

[0037] (2) Smelting: put the mixed raw material described in step (1) in a melting furnace, smelt at 690°C for 10 minutes under an argon atmosphere, continue heating at a rate of 20°C / min to 950°C, and smelt for 15 minutes;

[0038] (3) Refining: Cool the smelt obtained in step (2) to 490°C at a rate of 25°C / min, smelt for 0.5h, then raise the temperature to 660°C at a rate of 7°C / min, smelt for 1h, and continue at 10°C / min Raise the temperature ...

Embodiment 3

[0042] A light alloy material containing the following components in weight percentage: Al 59%, Nb 4%, Sn 1.0%, C 0.03%, Sc 0.7%, W 0.04%, Mo 1.2%, Ni 0.5%, Cr 0.2%, Dy 0.04%, the unavoidable impurity content is less than 0.01%, and the balance is Ti.

[0043]Its preparation method comprises the following steps:

[0044] (1) Raw material pretreatment: put all raw materials in a drying oven, dry at 120°C for 25 minutes, dry, weigh each raw material according to the above ratio, stir, and mix the raw materials for later use;

[0045] (2) Smelting: put the mixed raw material described in step (1) in a melting furnace, smelt at 670°C for 13 minutes under an argon atmosphere, continue heating at a rate of 17°C / min to 930°C, and smelt for 20 minutes;

[0046] (3) Refining: Cool the smelt obtained in step (2) to 489°C at a rate of 18°C / min, smelt for 0.8h, then raise the temperature to 630°C at a rate of 5°C / min, smelt for 1.2h, continue to smelt at 7°C Raise the temperature to 930...

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Abstract

The invention provides a light weight alloy material and a preparation method thereof. The light weight alloy material is prepared from the following components in weight percentage: 53-59% of Al, 3-4% of Nb, 0.5-1.0% of Sn, 0.01-0.03% of C, 0.4-0.7% of Sc, 0.02-0.04% of W, 0.5-1.2% of Mo, 0.06-0.5% of Ni, 0.1-0.2% of Cr, 0.02-0.04% of Dy, less than 0.01% of unavoidable impurities, and the balance Ti. The preparation process comprises the steps of material pretreatment, smelting, refining, mould casting and annealing. The light weight alloy material has the characteristics of being light in mass, high in tensile strength, high in acid-base corrosion resistance, good in ductility and high in plasticity, the extension strength can reach 1350MPa, the yield strength is 1100MPa, the ductility can reach 13%; and the bending resistant capability is good.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a light alloy material and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, various electronic and electrical products have become necessities for office and life, such as televisions, stereos, electronic office equipment, home electronic health care equipment, cameras, mobile phones and tablet computers, etc. The development of all these devices is developing towards light, thin and small, which makes the requirements for the materials of their shells and internal parts more and more high, and lightweight materials are becoming more and more important. However, lightweight materials have low hardness, poor impact resistance, and low plasticity. [0003] Titanium alloys have the advantages of light weight, high strength, and good corrosion resistance. There are many benefits to using tit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04
CPCC22C21/00C22C1/026C22F1/04
Inventor 马志国吕琰李敏代从仁高德峰
Owner HUANGHE S & T COLLEGE
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