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Method for melting a pseudo beta-titanium alloy comprising (4.0-6.0)% Ai-(4.5-6.0)% Mo-(4.5-6.0)% v-(2.0-3.6)% Cr, (0.2-0.5)% Fe-(0.1-2.0)% Zr

A technology of β-titanium alloy and titanium alloy, which is applied in the field of non-ferrous metallurgy, can solve the problems of increasing oxygen and deteriorating the mechanical properties of titanium alloy, and achieve the effect of high fracture toughness and high strength

Active Publication Date: 2013-10-02
OTKRYTOE AKTSIONERNOE OBSHCHESTVO KORPORATSIJA VSMPO AVISMA
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, the complex master alloy contains a large amount of oxygen, which will increase the oxygen in other components of the mixture as well as in the residual air of the vacuum arc furnace, which leads to a serious deterioration of the mechanical properties of the titanium alloy

Method used

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  • Method for melting a pseudo beta-titanium alloy comprising (4.0-6.0)% Ai-(4.5-6.0)% Mo-(4.5-6.0)% v-(2.0-3.6)% Cr, (0.2-0.5)% Fe-(0.1-2.0)% Zr
  • Method for melting a pseudo beta-titanium alloy comprising (4.0-6.0)% Ai-(4.5-6.0)% Mo-(4.5-6.0)% v-(2.0-3.6)% Cr, (0.2-0.5)% Fe-(0.1-2.0)% Zr

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Effect test

Embodiment Construction

[0036] Examples of practical embodiments of the invention.

[0037] 1. A 560 mm diameter ingot with the following chemical composition was vacuum arc melted twice:

[0038]

[0039] The ingots were converted into billets of 250mm diameter and subsequently tested for metallic properties. The following results of mechanical properties were obtained after appropriate heat treatment:

[0040] Tensile strength of 1293MPa

[0041] Yield strength of 1239MPa

[0042] 2% elongation

[0043] 4.7% reduction in area

[0044] Fracture toughness of 66.3MPa√m

[0045] 2. Vacuum arc melting was performed twice on a 190mm diameter ingot having the following chemical composition:

[0046]

[0047] The ingots were converted into rods with a diameter of 32mm and the metal properties were subsequently tested. The following results of mechanical properties were obtained after appropriate heat treatment:

[0048] Tensile strength of 1427MPa

[0049] Yield strength of 1382MPa

[0050]...

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Abstract

The invention relates to the field of nonferrous metallurgy, and specifically to the production of pseudo beta-titanium alloys comprising titanium and also the following alloying elements: molybdenum, vanadium, chromium, zirconium, iron and aluminium. The proposed alloy comprises the following components: 25-27% by mass of molybdenum; 25-27% by mass of vanadium; 14-16% by mass of chromium; 9-11% by mass of titanium; aluminium as the base, and iron and zirconium in the form of technically pure metals. The technical result of the invention is the possibility of producing a pseudo beta-titanium alloy with a highly homogeneous chemical composition, which is alloyed with high-melting elements, has a less than or equal to 6% content of aluminium and has stable high-impact properties in combination with high-impact strength.

Description

technical field [0001] The present invention relates to non-ferrous metallurgy, namely the preparation of near-beta titanium alloys comprising titanium and alloying elements such as molybdenum, vanadium, chromium, zirconium, iron and aluminium. Background technique [0002] There are some known alloys containing specific elements (RF Patent Nos. 2283889 and 2169782). The invention of these alloys is a prerequisite for the current trend to increase the weight and size characteristics of commercial aircraft, which leads to an increase in the cross-section of highly loaded components such as landing gear. At the same time, the requirements for materials have become more stringent, and a good combination of high tensile strength and high impact strength is urgently required. These structural components are made of high-alloy steel or titanium alloys. Substitution of titanium alloys for steel alloys is potentially very beneficial as it drives weight savings of at least 1.5 time...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22B9/20
CPCC22C1/03C22B9/20C22C14/00C22F1/183
Inventor V·V·泰特于金I·V·列文
Owner OTKRYTOE AKTSIONERNOE OBSHCHESTVO KORPORATSIJA VSMPO AVISMA
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