Al-V-B intermediate alloy as well as preparation method and application thereof

A master alloy, al-v-b technology, applied in the field of metal materials, can solve problems such as failure to meet higher requirements for grain refiners, adhesion and settlement of salt melt mixtures, uneven composition of master alloys, etc., to achieve shortening The effect of melting time, uniform refining effect and high product quality

Active Publication Date: 2021-07-16
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, CN110157935A discloses an Al-V-B refiner for casting aluminum-silicon alloy, its preparation method and application, its chemical element composition and mass percentage are aluminum 80.0-95.8%, vanadium 2.1-10.0%, boron 2.1-10.0% , using KBF 4 , Al block and V powder are smelted at a temperature of 750-850°C; but the B content of this method is higher than 2%, and when a large amount of salt is added, the melt viscosity will be too high, and the use of a simple smelting method will lead to The adhesion and settlement of the salt melt mixture is serious, and the composition of the intermediate alloy prepared is uneven, resulting in uneven effect after refining the alloy, which cannot meet the higher requirements of the grain refiner.

Method used

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  • Al-V-B intermediate alloy as well as preparation method and application thereof
  • Al-V-B intermediate alloy as well as preparation method and application thereof
  • Al-V-B intermediate alloy as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0045] An Al-V-B master alloy, the composition of chemical elements is by mass percentage, V: 2%, B: 1%, and the balance is Al; the Al-V-B master alloy is an Al-2V-1B master alloy;

[0046] A kind of preparation method of Al-V-B master alloy, comprises the steps:

[0047]Step 1: Weigh AlV according to the mass ratio of Al-V-B master alloy 5 Block and KBF 4 powder, then AlV 5 Block and KBF 4 The powder is wrapped with aluminum foil and mixed, heated to 140°C and dried for 2 hours to remove moisture;

[0048] Step 2: Preheat the crucible to 320°C in a heating furnace, then place pure aluminum in the crucible, and heat until the pure aluminum is completely melted to form an aluminum melt; then wrap the AlV 5 Block and KBF 4 The powdered aluminum foil is immersed in the aluminum melt, and after it is completely melted, it is stirred until it is evenly mixed to form a mixed melt; at this time, the components in the mixed melt are V: 2%, B: 1%, and the balance is Al;

[0049] ...

Embodiment 2

[0063] An Al-V-B master alloy, the composition of chemical elements is by mass percentage, V: 2%, B: 2%, and the balance is Al; the Al-V-B master alloy is an Al-2V-2B master alloy;

[0064] A kind of preparation method of Al-V-B master alloy, comprises the steps:

[0065] Step 1: Weigh AlV according to the mass ratio of Al-V-B master alloy 5 Block and KBF 4 powder, then AlV 5 Block and KBF 4 The powder is wrapped with aluminum foil and mixed, heated to 145°C and dried for 2.5 hours to remove moisture;

[0066] Step 2: Preheat the crucible to 330°C in a heating furnace, then place pure aluminum in the crucible, and heat until the pure aluminum is completely melted to form an aluminum melt; then wrap the AlV 5 Block and KBF 4 The powdered aluminum foil is immersed in the aluminum melt, and after it is completely melted, it is stirred until it is evenly mixed to form a mixed melt; at this time, the components in the mixed melt are V: 2%, B: 2% by mass, and the balance is Al;...

Embodiment 3

[0080] An Al-V-B master alloy, the composition of chemical elements is by mass percentage, V: 3%, B: 1%, and the balance is Al; the Al-V-B master alloy is an Al-3V-1B master alloy;

[0081] A kind of preparation method of Al-V-B master alloy, comprises the steps:

[0082] Step 1: Weigh AlV according to the mass ratio of Al-V-B master alloy 5 Block and KBF 4 powder, then AlV 5 Block and KBF 4 The powder is wrapped with aluminum foil and mixed, heated to 135°C and dried for 3 hours to remove moisture;

[0083] Step 2: Preheat the crucible to 310°C in a heating furnace, then place pure aluminum in the crucible, and heat until the pure aluminum is completely melted to form an aluminum melt; then wrap the AlV 5 Block and KBF 4 The powdered aluminum foil is immersed in the aluminum melt, and after it is completely melted, it is stirred until it is evenly mixed to form a mixed melt; at this time, the components in the mixed melt are V: 3%, B: 1%, and the balance is Al;

[0084]...

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Abstract

The invention relates to an Al-V-B intermediate alloy as well as a preparation method and application thereof, and belongs to the technical field of metal materials. The Al-V-B intermediate alloy comprises the following chemical elements in percentage by mass: 2-3% of V, 1-2% of B and the balance of Al; and pure Al, AlV5 blocks and KBF4 powder are adopted as raw materials to be smelted to prepare the Al-V-B intermediate alloy. According to the preparation method of the Al-V-B intermediate alloy, V can be uniformly distributed in a melt, the V element can form second-phase particles such as Al10V and VB2 to help aluminum to generate heterogeneous nucleation so as to achieve the purpose of grain refinement, and the reasonable content of V and B in the intermediate alloy is set, so that the best aluminum or aluminum alloy grain refinement effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to an Al-V-B master alloy and its preparation method and application. Background technique [0002] As a light metal material, aluminum alloy is widely used in military industry, aerospace, automobile, construction, electronics and other industries due to its light weight, high strength, good plastic toughness, and excellent cold working performance. With the development of industry, people have stricter requirements on the microstructure and properties of aluminum and aluminum alloys obtained through subsequent deep processing. The key to controlling their microstructure and properties is to obtain a fine and uniform as-cast grain structure. In industrial production, adding grain refiner to aluminum melt is one of the most economical and effective means. [0003] At present, the aluminum alloy refiner is mainly Al-Ti-B series, which is mainly produced by the fluoride salt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/00
CPCC22C1/03C22C1/026C22C21/00
Inventor 何立子王鑫王新宇刘宏亮高思睿
Owner NORTHEASTERN UNIV
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