Alpha+beta type titanium alloy wire for 960MPa intensity level electron beam fused deposition rapid-forming members

A technology of fuse accumulation and forming components, applied in the field of titanium-based alloys, can solve the problems of coarse microstructure and large plasticity restrictions of material strengthening materials

Active Publication Date: 2013-01-23
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the use of a completely different process from the traditional preparation method, the microstructure of the electron beam fuse deposition rapid forming titanium alloy material is completely different from the microstructure of forged and cast titanium alloys, and it is a near-equilibrium rapid solidification structure. The microstructure is coarser than that of forgings, and the material strengthening is greatly limited by the plasticity of the material

Method used

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  • Alpha+beta type titanium alloy wire for 960MPa intensity level electron beam fused deposition rapid-forming members
  • Alpha+beta type titanium alloy wire for 960MPa intensity level electron beam fused deposition rapid-forming members
  • Alpha+beta type titanium alloy wire for 960MPa intensity level electron beam fused deposition rapid-forming members

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1, the alloy composition is (wt%): Al: 7.2%; V: 4.0%; Fe: 0.50%; O: 0.12%; Si: 0.05%; C: 0.08%; impurity elements.

Embodiment 2

[0043] Example 2, the alloy composition is (wt%): Al: 6.2%; V: 5.5%; Fe: 0.20%; O: 0.22%; Si: 0.10%; C: 0.03%; impurity elements.

Embodiment 3

[0044] Example 3, the alloy composition is (wt%): Al: 6.8%; V: 5.0%; Fe: 0.10%; O: 0.17%; Si: 0.12%; C: 0.04%; impurity elements.

[0045] After the present invention has verified that the overall performance of the above-mentioned alloy reaches the expected goal, a large number of alloy composition optimization tests have been carried out, and its preferred composition will be further described in detail through the following examples, but the present invention is not limited to the following Several preferred embodiments.

[0046] The alloy composition of table 1 preferred embodiment

[0047]

[0048] Table 2 Test material stacking process

[0049] Accelerating voltage

focus current

Beam

Movement speed

Wire feeding method

Wire speed

60KV

820mA

135mA

15mm / s

double wire

35mm / s

[0050] Table 3 is the performance data of the electron beam rapid prototyping material corresponding to the embodiment in Table 1. ...

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Abstract

The invention provides an alpha+beta type titanium alloy wire for 960MPa intensity level electron beam fused deposition rapid-forming members. The alpha+beta type titanium alloy wire is characterized by intensifying an alpha phase through adopting alloy elements Al, C and O and intensifying a beta phase through adopting alloy elements V, Fe and Si, the wire comprises the following components in percentage by weight: 6.2-7.2% of Al, 4.0-5.5% of V, 0.10-0.50% of Fe, 0.12-0.22% of O, 0.05-0.12% of Si, 0.03-0.08% of C, and the balance of Ti and inevitable impurity elements. The invention further provides a melting technology, a heating processing technology and a heating processing technology for electron beam rapid-forming members accordingly. The wire not only can meet the requirement on the electron beam fused deposition rapid-forming technology, but also enable the titanium alloy members to have excellent mechanical property. Therefore, the popularization and application of the alpha+beta type titanium alloy wire certainly create tremendous social benefits and economic benefits.

Description

Technical field: [0001] The invention belongs to the technical field of titanium-based alloys, and in particular relates to a titanium alloy wire material specially used for making 960MPa strength level electron beam fuse stacking rapid forming components. Background technique [0002] In order to reduce the weight of the aircraft structure, the use of high specific strength titanium alloy material is an ideal choice. Aircraft use large and complex titanium alloy structures to withstand relatively large loads and require high strength. There are two typical preparation methods for traditional large and complex titanium alloy structures, forging and casting. Compared with castings, forged parts (forgings) have obvious advantages in comprehensive mechanical properties, especially strength and plasticity matching, but the cost is very high due to long thermal processing cycle and extremely low material utilization rate (only 3%~5%); in forgings In the case of large size and v...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03C22B9/20B23P15/00C22F1/18
Inventor 刘建荣巩水利杨锐王清江锁红波王磊陈哲源陈志勇朱绍祥杨光杨洋李晋炜
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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