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High-strength and high-toughness titanium alloy and preparation method thereof

A high-toughness, titanium alloy technology, applied in the field of alloy materials, can solve the problems of limiting the application of titanium alloys, insufficient strength and toughness, and sensitive process parameters, etc., to achieve good cold and hot processing performance, improve yield and service life, and heat treatment performance Good results

Inactive Publication Date: 2018-03-23
BEIJING JINYU SHUNDA TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing titanium alloys have insufficient strength and toughness, low tensile ductility, poor forgeability, high manufacturing costs, and sensitive performance to process parameters, which limit the application of existing titanium alloys in aerospace and military industries.

Method used

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  • High-strength and high-toughness titanium alloy and preparation method thereof
  • High-strength and high-toughness titanium alloy and preparation method thereof
  • High-strength and high-toughness titanium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Preparation of various formula titanium alloy materials

[0023] Adopt the following method to prepare the titanium alloy material of each formula composition in Table 1 (the content of each substance is a weight percentage content; the total weight percentage of carbon, hydrogen, oxygen and nitrogen in the inevitable impurities of each formula is less than 0.4% of the total weight of the titanium alloy ).

[0024] Alloy materials are prepared according to the composition of each formula, and the required sponge titanium, aluminum vanadium master alloy, aluminum chromium master alloy, aluminum molybdenum master alloy, zirconium simple substance, aluminum niobium master alloy are mixed and pressed into electrodes, and the electrodes are placed in a vacuum consumable furnace The alloy ingot is obtained by melting twice or three times (smelting vacuum degree is required to be lower than 1Pa). After the ingot is peeled off, the riser and tail are cut off, the...

Embodiment 2

[0028] Embodiment 2: The mechanical property detection of each formula titanium alloy material

[0029] According to the national standard GB / T 228.1-2010, the titanium alloy forgings prepared according to the formulations of Example 1 were made into tensile samples, and the comprehensive mechanical properties were tested at room temperature. The test results are shown in Table 2 below.

[0030] Table 2 Mechanical property test results of each formula titanium alloy material

[0031]

[0032] It can be seen from the data in Table 2 above that the titanium alloy material of the present invention has high strength and obviously better mechanical properties.

Embodiment 3

[0033] Example 3: Detection of Fracture Toughness of Various Formula Titanium Alloy Materials

[0034] According to the detection standard of the national standard GB / T 4161-2007, the titanium alloy materials of various formulations in Example 1 were made into samples, and the fracture toughness was tested respectively. The test results are shown in Table 3 below.

[0035] Table 3 Fracture toughness test results of each formula titanium alloy material

[0036] recipe number

[0037] It can be seen from the data in Table 3 above that the titanium alloy material of the present invention has significantly better fracture toughness.

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Abstract

The invention belongs to the technical field of alloy materials, and relates to a high-strength and high-toughness titanium alloy and a preparation method thereof. The high-strength and high-toughnesstitanium alloy not only mainly contains titanium, but also contains the following components in percentages by weight: 5-9% of aluminum, 0.1-2.5% of vanadium, 0.1-2% of chromium, 0.1-2% of molybdenumand a trace amount of inevitable impurities. The high-strength and high-toughness titanium alloy has excellent mechanical property and fracture toughness.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and relates to a high-strength and high-toughness titanium alloy and a preparation method thereof. Background technique [0002] With the development of aerospace industry and military industry, the demand for new titanium alloys with high strength and high fracture toughness is becoming more and more urgent. Therefore, the research on new high-strength and high-toughness titanium alloys for large-scale aviation structural parts and large-scale forgings for special vehicles has been obtained by countries all over the world. attention. [0003] However, the existing titanium alloys have insufficient strength and toughness, low tensile ductility, poor forgeability, high manufacturing cost, and performance sensitivity to process parameters, which limit the application of existing titanium alloys in aerospace and military industries. Contents of the invention [0004] The primary purpose o...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03C22B9/20
CPCC22C14/00C22B9/20C22C1/03
Inventor 刘建尊
Owner BEIJING JINYU SHUNDA TECH CO LTD
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