A kind of al-v-b master alloy and its preparation method and application

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

Active Publication Date: 2022-06-24
NORTHEASTERN UNIV LIAONING
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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.

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  • A kind of al-v-b master alloy and its preparation method and application
  • A kind of al-v-b master alloy and its preparation method and application
  • A kind of al-v-b master alloy and its preparation method and application

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Embodiment 1

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

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

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

[0048] Step 2: Put the crucible into the heating furnace and preheat to 320°C, then place the pure aluminum in the crucible, and heat it until all the pure aluminum is melted to form an aluminum melt; 5 Blocks 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] Step 3: The mixed melt was...

Embodiment 2

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

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

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

[0066] Step 2: Put the crucible into the heating furnace and preheat to 330°C, then place the pure aluminum in the crucible, and heat it until all the pure aluminum is melted to form an aluminum melt; 5 Blocks 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%, and the balance is Al;

[0067] Step 3: Heat the mixed ...

Embodiment 3

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

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

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

[0083] Step 2: Put the crucible into the heating furnace and preheat to 310°C, then place the pure aluminum in the crucible, and heat it until all the pure aluminum is melted to form an aluminum melt; 5 Blocks 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] Step 3: Heat the mi...

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Abstract

An Al-V-B master alloy and its preparation method and application, belonging to the technical field of metal materials, the chemical elements of the alloy are composed by mass percentage, V: 2-3%, B: 1-2%, and the balance is Al ; Using pure Al, AlV 5 Block and KBF 4 The powder is used as raw material for melting to prepare Al-V-B master alloy. The preparation method of the Al-V-B master alloy of the present invention can make the distribution of V in the melt very uniform, and the V element can form Al 10 V and VB 2 Waiting for the second phase particles to help the heterogeneous nucleation of aluminum to achieve the purpose of grain refinement, setting a reasonable content of V and B in the master alloy, so as to achieve the best grain refinement effect of aluminum or aluminum alloy.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and particularly relates to an Al-V-B intermediate alloy and a preparation method and application thereof. Background technique [0002] As a light metal material, aluminum alloy is widely used in military, aerospace, automobile, construction, electronics and other industries due to its light weight, high strength, good plasticity and toughness, and excellent cold working performance. With the development of industry, people have stricter requirements on the structure and properties of aluminum and aluminum alloys obtained by subsequent deep processing. The key to controlling their structure and properties is to obtain 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 based on the Al-Ti-B series, mainly produced by the fluori...

Claims

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Application Information

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Patent Type & Authority Patents(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 LIAONING
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