Method for preparing multi-component niobium alloy ingot

A niobium alloy and multi-component technology, which is applied in the field of preparation of multi-component niobium alloy ingots, can solve the problems of complex process, difficult composition and high cost, and achieve the effects of simple preparation process, convenient production organization and improved efficiency

Active Publication Date: 2011-03-30
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The master alloy is added to the electrode, mainly by mixing Nb powder with each component powder, pressing and sintering into a strip or block master alloy, and finally adding the master alloy to the electrode for vacuum consumable electric arc furnace smelting. This method The disadvantages are: complex process, high cost, large difference in melting point of alloy components, different vapor pressure, difficult to control the composition, and prone to excessive impurities.

Method used

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  • Method for preparing multi-component niobium alloy ingot
  • Method for preparing multi-component niobium alloy ingot
  • Method for preparing multi-component niobium alloy ingot

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Preparation of Nb-41Ti-5Al Alloy Ingot

[0031] Step 1, carry out the proportioning weighing of raw material according to the composition of Nb-41Ti-5Al alloy ingot;

[0032] Step 2. Wrap the metal particle aluminum with aluminum foil with a thickness of ≤0.15 mm to prepare an alloy package 3;

[0033] Step 3: Place the spongy base metal 2 on the mould, then evenly place the alloy package 3 described in step 2 on the spongy base metal 2, and place another layer of spongy base metal on the alloy package 3 2. Sponge titanium, which is pressed into a semicircular electrode 4 with a semicircular cross-section on a press with a semicircular compact;

[0034] Step 4. Under the protection of argon gas with a mass purity ≥ 99.99%, place the pure niobium rod 1 at the center of the electrode 4 described in the step 3 of the two sections, and weld it by argon arc welding to form a complete electrode;

[0035] Step 5. Place the complete electrode described in step 4 in a vacuum c...

Embodiment 2

[0041] Preparation of Nb-37Ti-8Al-5Cr Alloy Ingot

[0042] Step 1, carry out the proportioning weighing of raw material according to the composition of Nb-37Ti-8Al-5Cr alloy ingot;

[0043] Step 2: Mix metal particle aluminum and metal particle chromium and wrap it with aluminum foil with a thickness of ≤0.15 mm to prepare an alloy package 3;

[0044] Step 3: Place the spongy base metal 2 on the mould, then evenly place the alloy package 3 described in step 2 on the spongy base metal 2, and place another layer of spongy base metal on the alloy package 3 2. Sponge titanium, which is pressed into a semicircular electrode 4 with a semicircular cross-section on a press with a semicircular compact;

[0045] Step 4. Under the protection of argon gas with a mass purity ≥ 99.99%, place the pure niobium rod 1 at the center of the electrode 4 described in the step 3 of the two sections, and weld it by argon arc welding to form a complete electrode;

[0046] Step 5. Place the complete ...

Embodiment 3

[0052] Preparation of Nb-32Ti-8Al-3V-1Zr Alloy Ingot

[0053] Step 1, carry out the proportioning weighing of raw material according to the composition of Nb-32Ti-8Al-3V-1Zr alloy ingot;

[0054] Step 2. Mix the aluminum particles with the vanadium particles and wrap them with aluminum foil with a thickness of ≤0.15 mm to prepare an alloy package 3;

[0055] Step 3: Place the spongy matrix metal 2 (sponge titanium and sponge zirconium) on the mold, then place the alloy package 3 described in step 2 evenly on the spongy matrix metal 2, and then place another one on the alloy package 3. A layer of spongy base metal 2 (titanium sponge and zirconium sponge), pressed into a semicircular electrode 4 with a semicircular cross-section on a press;

[0056] Step 4. Under the protection of argon gas with a mass purity ≥ 99.99%, place the pure niobium rod 1 at the center of the electrode 4 described in the step 3 of the two sections, and weld it by argon arc welding to form a complete elec...

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Abstract

The invention discloses a method for preparing a multi-component niobium alloy ingot, which comprises the following steps of: 1, proportioning raw materials according to components of the multi-component niobium alloy ingot to be prepared; 2, preparing an alloy package; 3, placing the alloy package into a spongy base metal and pressing into a semicircular electrode; 4, welding the two sections of electrodes into a complete electrode; and 5, smelting the electrode to obtain a multi-component niobium alloy ingot. The method has the advantages of simple process, low cost and convenience of production organization, can greatly improve production efficiency of the niobium alloy ingot industry, and is applicable to preparation of all kinds of binary system and polynary system niobium alloy ingots containing low-melting low-intensity components.

Description

technical field [0001] The invention belongs to the technical field of alloy preparation, and in particular relates to a method for preparing a multi-element niobium alloy ingot. Background technique [0002] Alloy research shows that a multi-component body-centered cubic solid-solution strengthened Nb-Ti-Al alloy has good comprehensive properties. It has low density, no magnetism, medium temperature strength (1100 ° C), good corrosion resistance, and oxidation resistance. With the advantages of good resistance and easy welding, it has become a candidate material for medium temperature structural parts, and plays an extremely important role in the development of aerospace technology, weaponry and civilian industries. [0003] This type of alloy contains a large amount of titanium and aluminum elements, a small amount of elements such as zirconium, vanadium, chromium, carbon, etc. Compared with niobium, these elements have a lower melting point and a smaller specific gravity,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C27/02C22C1/02B22D23/10
Inventor 白润郑欣蔡小梅李中奎王峰王东辉夏明星
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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