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Aluminum-molybdenum-zirconium intermediate alloy and preparation method thereof

A master alloy, aluminum-molybdenum technology, applied in the field of aluminum-molybdenum-zirconium master alloy and its preparation, can solve the problems of difficult to meet the segregation of aerospace and titanium alloy products.

Pending Publication Date: 2022-01-28
CHENGDE TIANDA VANADIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

TC19 titanium alloy is usually vacuum smelted by adding simple metals, which is easy to cause segregation of finished titanium alloy products, which is difficult to meet the needs of aerospace industry development

Method used

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  • Aluminum-molybdenum-zirconium intermediate alloy and preparation method thereof
  • Aluminum-molybdenum-zirconium intermediate alloy and preparation method thereof
  • Aluminum-molybdenum-zirconium intermediate alloy and preparation method thereof

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[0028] The present invention also provides a method for preparing the aluminum-molybdenum-zirconium master alloy described in the above technical solution, comprising the following steps:

[0029] Mixing the first aluminum source and the molybdenum source, performing an aluminothermic reaction, to obtain an aluminum-molybdenum primary alloy;

[0030] The primary aluminum-molybdenum alloy, zirconium and a second aluminum source are mixed, and vacuum smelted to obtain the aluminum-molybdenum-zirconium master alloy.

[0031] In the invention, the first aluminum source and the molybdenum source are mixed, and the aluminothermic reaction is carried out to obtain the primary aluminum-molybdenum alloy.

[0032] In the present invention, before the first aluminum source and molybdenum source are mixed, it is preferable to dry the first aluminum source and molybdenum source respectively; the drying temperature is preferably 100-120°C, more preferably 110°C, and the time is more than 6...

Embodiment 1

[0053] 1. Aluminum thermal smelting process

[0054] (1) Dry the aluminum powder, molybdenum trioxide and molybdenum dioxide at a drying temperature of 110°C and a drying time of 12 hours;

[0055] (2) Calculate the mass ratio of the alloy in the aluminothermic smelting process based on the mass fraction of molybdenum in molybdenum trioxide and molybdenum dioxide and the aluminum consumption of molybdenum trioxide and molybdenum dioxide in the chemical reaction: aluminum powder and molybdenum trioxide, di The mass ratio of molybdenum oxide is 2.000:1.800:1.000;

[0056] (3) Aluminum powder, molybdenum trioxide and molybdenum dioxide are loaded into a mixer and mixed for 4 minutes at a rate of 120r / min;

[0057] (4) Preheat the mixed aluminum powder, molybdenum trioxide and molybdenum dioxide to a furnace charging temperature of 43°C, ignite and smelt, and take out the furnace after 24 hours to obtain an aluminum-molybdenum 65 first-grade alloy.

[0058] 2. Proportion of vacu...

Embodiment 2

[0077] 1. Aluminum thermal smelting process

[0078] (1) Dry the aluminum powder, molybdenum trioxide and molybdenum dioxide at a drying temperature of 110°C and a drying time of 12 hours;

[0079] (2) Calculate the mass ratio of the alloy in the aluminothermic smelting process based on the mass fraction of molybdenum in molybdenum trioxide and molybdenum dioxide and the aluminum consumption of molybdenum trioxide and molybdenum dioxide in the chemical reaction: aluminum powder and molybdenum trioxide, di The mass ratio of molybdenum oxide is 2.000:1.800:1.000;

[0080] (3) Aluminum powder, molybdenum trioxide and molybdenum dioxide are loaded into a mixer and mixed for 4 minutes at a rate of 120r / min;

[0081] (4) Preheat the mixed aluminum powder, molybdenum trioxide and molybdenum dioxide to a furnace charging temperature of 43°C, ignite and smelt, and take out the furnace after 24 hours to obtain an aluminum-molybdenum 65 first-grade alloy.

[0082] 2. Proportion of vacu...

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Abstract

The invention provides an aluminum-molybdenum-zirconium intermediate alloy and a preparation method thereof, and relates to the technical field of metal materials. The aluminum-molybdenum-zirconium intermediate alloy provided by the invention comprises the following components in percentage by mass: 41.0 to 45.0 percent of Mo, 23.0 to 26.0 percent of Zr and the balance being Al. According to the invention, by controlling element composition and content, the aluminum-molybdenum-zirconium intermediate alloy has smaller composition segregation, and composition segregation of a titanium alloy is prevented when the TC19 titanium alloy is smelted; and the aluminum-molybdenum-zirconium intermediate alloy is low in impurity content, and is beneficial to component homogenization of the titanium alloy when the TC19 titanium alloy is smelted. The aluminum-molybdenum-zirconium intermediate alloy provided by the invention is matched with the TC19 titanium alloy in component, and the titanium alloy TC19 is optimal in performance at the moment.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to an aluminum-molybdenum-zirconium master alloy and a preparation method thereof. Background technique [0002] Titanium and its alloys have excellent properties, such as high strength, corrosion resistance, high temperature resistance, and good process performance. Therefore, they are increasingly becoming attractive materials in the field of modern industrial science and technology. , chemical industry, light industry, metallurgy, machinery and energy and many other fields have been widely used. [0003] With the rapid development of materials in recent years, the aerospace industry has more and more urgent needs for new structural materials with high strength, high elastic modulus, low density and high temperature resistance. Therefore, titanium alloy has become the research focus of new materials in recent years, and TC19 titanium alloy has become a hot spot in the fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C27/04
CPCC22C30/00C22C27/04
Inventor 王志军刘强何建成孙鑫刘志彬段善博纪海龙王东华张吉
Owner CHENGDE TIANDA VANADIUM IND
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