Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof

An intermediate alloy and composite structure technology, applied in the field of grain refiner, can solve the problems of C element addition and alloying, difficult to accurately control component content, long reaction time and other problems, achieve broad market application prospects, and low production cost , The effect of simple preparation process

Inactive Publication Date: 2008-11-26
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes require stirring, vacuum, gas control and other devices, the reaction time is long, and it is difficult to accurately control the content of ingredients, so the application cost in actual production is high and difficult
At the same time, in the production of Al-Ti-C refining agent, because the aluminum melt does not wet C, it is difficult to add and alloy C elements, so that the industrial production of Al-Ti-C master alloys has not been realized for a long time.

Method used

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  • Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof
  • Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof
  • Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0012] First 1. graphite powder, titanium powder and yttrium powder are counted as by mass percent Wt%: Ti 0.50, C1.00, the proportioning requirement of Y 0.10, weigh the raw material and mix and press into prefabricated block for subsequent use;

[0013] II. Preheat the pure aluminum ingot, then put it into a graphite crucible heated to 450°C, and then adjust the temperature to 760°C;

[0014] III. When all the pure aluminum ingots to be loaded are melted, heat up to 830°C, then add spare prefabricated blocks in batches and cover them with cryolite covering agent, keep warm for 25 minutes, remove slag, and then add refining agent C 2 Cl 6 Refining, the amount of refining agent is 1.3% of the total weight of the alloy, while refining, evenly stirring, and then standing for 40 minutes to obtain a clean aluminum, titanium, carbon, yttrium intermediate alloy metal liquid, and then pour it into the preheated Solidification and crystallization in ordinary metal casting molds; then...

Embodiment approach 2

[0018] First 1. graphite powder, titanium powder and yttrium powder are counted as by mass percent Wt%: Ti 6.00, C10.00, the proportioning requirement of Y3.00, it is said that raw material is mixed and pressed into prefabricated block for subsequent use;

[0019] II. Preheat the pure aluminum ingot, then put it into a graphite crucible heated to 450°C, and then adjust the temperature to 760°C;

[0020] III. When all the pure aluminum ingots to be loaded are melted, heat up to 830°C, then add spare prefabricated blocks in batches and cover them with cryolite covering agent, keep warm for 25 minutes, remove slag, and then add refining agent C 2 Cl 6 Refining, the amount of refining agent is 1.3% of the total weight of the alloy, while refining, evenly stirring, and then standing for 40 minutes to obtain a clean aluminum, titanium, carbon, yttrium intermediate alloy metal liquid, and then pour it into the preheated Solidification and crystallization in ordinary metal casting mo...

Embodiment approach 3

[0024] First 1. graphite powder, titanium powder and yttrium powder are counted by mass percentage Wt%: Ti 3.00, C5.00, the proportioning requirement of Y 2.00, weigh the raw material and mix and press into prefabricated block for subsequent use;

[0025] II. Preheat the pure aluminum ingot, then put it into a graphite crucible heated to 450°C, and then adjust the temperature to 760°C;

[0026] III. When all the pure aluminum ingots to be loaded are melted, heat up to 830°C, then add spare prefabricated blocks in batches and cover them with cryolite covering agent, keep warm for 25 minutes, remove slag, and then add refining agent C 2 Cl 6 Refining, the amount of refining agent is 1.3% of the total weight of the alloy, while refining, evenly stirring, and then standing for 40 minutes to obtain a clean aluminum, titanium, carbon, yttrium intermediate alloy metal liquid, and then pour it into the preheated Solidification and crystallization in ordinary metal casting molds; then...

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Abstract

A intermediate alloy of aluminum, titanium, carbon and Yt and method for manufacturing same relates to a grain refiner for electron alloys thinning processing and with enhanced mechanical performances, belongs to the field of metallic material design and fabricating, and is characterized by its chemical components (based on the mass percentage, wt%) as follows: Ti 0.50-6.00, C 1.00-10.00, Y 0.10-3.00, and the allowance is Al, wherein the as-cast structure is characterized by a four-phase complex tissue of alpha-Al, Al3Y, TiC and Al4C3, with the chemical compounds granules of Al3Y, TiC and Al4C3 distributed homogeneously on the alpha-Al basal body.Said intermediate alloy of aluminum, titanium, carbon and Yt is very suitable for grain refiner of electron alloys and possesses very wide market application foreground due to its simple preparing process, low cost of manufacture and capability of mass industrial production.

Description

1. Technical field [0001] The invention relates to an aluminum, titanium, carbon, yttrium master alloy and a manufacturing method thereof, which relate to a grain refiner used for refining magnesium and aluminum alloys and improving mechanical properties, and belong to the field of design and manufacture of metal materials. 2. Background technology [0002] Magnesium alloy is currently the lightest metal structure material in practical application, with the advantages of low density, high specific strength and specific stiffness, superior damping, shock absorption, and noise reduction performance. Therefore, more and more magnesium alloy products are used in the fields of automobile, communication electronics and aerospace. However, magnesium alloy has a close-packed hexagonal crystal structure, the alloy has poor bearing capacity, wide crystallization temperature range, and is prone to casting defects such as shrinkage porosity and thermal cracking. Particularly important....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/00C22C1/02C22C23/02
Inventor 刘燕萍许春香王保成余春燕李永莲
Owner TAIYUAN UNIV OF TECH
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