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A kind of aluminum vanadium molybdenum chromium zirconium master alloy and preparation method thereof for tb9 titanium alloy

A technology of aluminum vanadium molybdenum chromium zirconium and master alloy, which is applied in the field of aluminum molybdenum vanadium chromium iron five-element master alloy and its preparation, can solve the problems of insufficient melting of high melting point and high density elements, affecting composition uniformity, reducing use effect and the like , to ensure the uniformity of ingredients, improve stability, and improve production efficiency.

Active Publication Date: 2018-07-03
宝武特冶钛金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, 40Al-60Mo, 15Al-85V, metal Cr and other one-element or binary master alloys still contain a high proportion of high-melting point and high-density elements. Although they have undergone two or three vacuum consumable smelting, they still have high melting point and high density. The hidden danger of insufficient melting of elements will affect the uniformity of its composition and reduce its use effect

Method used

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  • A kind of aluminum vanadium molybdenum chromium zirconium master alloy and preparation method thereof for tb9 titanium alloy
  • A kind of aluminum vanadium molybdenum chromium zirconium master alloy and preparation method thereof for tb9 titanium alloy
  • A kind of aluminum vanadium molybdenum chromium zirconium master alloy and preparation method thereof for tb9 titanium alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Al, MoO 3 , V 2 o 5 , CrO 3 , Zr, CaF 2 , KClO 3 etc. as raw materials, with MoO 3 Powder mixed into 1.00Kg as the standard amount, then V 2 o 5 2.60Kg for powder, 0.95Kg for Al powder; CaF 2 Add 0.35Kg, KClO 3 Add 0.30Kg, fully mix the raw materials, install the furnace at room temperature, and conduct the first smelting through thermite reaction;

[0038] Add 1.20Kg of Cr powder and 0.80Kg of Zr powder to the primary product obtained from the first smelting, put them together in a vacuum induction furnace for smelting, and pour them in a vacuum state. After pouring, finishing, crushing, selection and other processes are carried out, and finally aluminum molybdenum vanadium chromium zirconium products with a particle size of 1-6mm are formed.

[0039] The composition of the product is: Al: 10.2%, Mo: 16.1%, V: 32.0%, Cr: 24.1%, Zr: 15.8%, and the rest are impurities. After mixing the intermediate alloy with sponge titanium and aluminum wire raw materials acc...

Embodiment 2

[0041] Al, MoO 3 , V 2 o 5 , CrO 3 , Zr, CaF 2 , KClO 3 etc. as raw materials, with MoO 3 Powder mixed into 1.00Kg as the standard amount, then V 2 o 5 Add 2.90Kg of powder, 0.50Kg of Al powder; CaF 2 Add 0.45Kg, KClO 3 Add 0.40Kg, fully mix the raw materials, install the furnace at room temperature, and conduct the first smelting through thermite reaction;

[0042] Add 1.40Kg of Cr powder and 1.00Kg of Zr powder to the primary product obtained by the first smelting. Put them together in a vacuum induction furnace for melting and pouring under vacuum. After pouring, finishing, crushing, selection and other processes are carried out, and finally aluminum molybdenum vanadium chromium zirconium products with a particle size of 1-6mm are formed.

[0043] The composition of the product is: Al: 5.0%, Mo: 17.1%, V: 33.2%, Cr: 25.0%, Zr: 17.0%, and the rest are impurities. The master alloy and sponge titanium, aluminum wire, TiO 2After the raw materials are mixed in a cer...

Embodiment 3

[0045] Al, MoO 3 , V 2 o 5 , CrO 3 , Zr, CaF 2 , KClO 3 etc. as raw materials, with MoO 3 Powder mixed into 1.00Kg as the standard amount, then V 2 o 5 Add 2.45Kg of powder, 0.75Kg of Al powder; CaF 2 Add 0.25Kg, KClO 3 Add 0.25Kg, fully mix the raw materials, load the furnace at room temperature, and conduct the first smelting through thermite reaction;

[0046] Add 1.05Kg of Cr powder and 0.70Kg of Zr powder to the primary product obtained by the first smelting. Put them together in a vacuum induction furnace for melting and pouring under vacuum. After pouring, finishing, crushing, selection and other processes are carried out, and finally aluminum molybdenum vanadium chromium zirconium products with a particle size of 1-6mm are formed. The composition of the product is: Al: 8.0%, Mo: 15.0%, V: 31.2%, Cr: 23.0%, Zr: 15.0%, and the rest are impurities. The master alloy and sponge titanium, aluminum wire, TiO 2 After the raw materials are mixed in a certain propor...

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Abstract

The invention discloses Al-Mo-V-Cr-Fe five-element intermediate alloy used for TB9 titanium alloy preparation. The Al-Mo-V-Cr-Fe five-element intermediate alloy comprises, by weight, 15-20% of Mo, 30-35% of V, 20-25% of Cr, 15-20% of Zr, and the balance Al and inevitable impurities. The intermediate alloy is suitable for preparation of TB9 titanium alloy, on one hand, the probability that in the ingot smelting process, the high-density inclusion and segregation defect caused by the high-melting-point elements including Mo and Cr can be effectively decreased, and on the other hand, the composition uniformity of titanium alloy ingots and titanium materials can be guaranteed.

Description

technical field [0001] The invention relates to an aluminum-molybdenum-vanadium-chromium-iron five-element master alloy used for preparing TB9 titanium alloy and a preparation method thereof. Background technique [0002] TB9 titanium alloy is a metastable β-titanium alloy with high strength and deep work hardening. It is widely used in aviation and marine fields. Its composition elements are characterized by diversified elements and high content. [0003] The main alloying elements of TB9 titanium alloy contain Mo, Cr, and V elements with high melting points. If these elements are added in the form of simple metals, the melting rate of each raw material in the electrode block will be different during smelting due to the difference in melting point, which will easily lead to high-density metals. Can be fully integrated, resulting in high-density inclusions ( figure 1 shown) or segregation ( figure 2 with image 3 shown). These defects bring risks to the application of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C14/00C22C1/02C22C1/03
CPCC22C1/02C22C1/03C22C14/00C22C30/00
Inventor 吴英彦黄爱军计波许正芳孟庆通陆琪程文祥
Owner 宝武特冶钛金科技有限公司