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Gradient porous Ti-6Al-4V block material concurrently having high strength and high absorption energy, and preparation method thereof

A technology of ti-6al-4v and block materials, applied in the field of porous materials, can solve the problems of high strength and high absorption energy, and achieve high strength, simple preparation process and low cost

Active Publication Date: 2016-11-23
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of porous Ti-6Al-4V bulk material with high strength and high absorption energy gradient and its preparation method, to solve the problem that the porous Ti-6Al-4V bulk material existing in the prior art cannot have both High Strength and High Absorbed Energy Issues

Method used

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  • Gradient porous Ti-6Al-4V block material concurrently having high strength and high absorption energy, and preparation method thereof
  • Gradient porous Ti-6Al-4V block material concurrently having high strength and high absorption energy, and preparation method thereof
  • Gradient porous Ti-6Al-4V block material concurrently having high strength and high absorption energy, and preparation method thereof

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Effect test

Embodiment 1

[0035] The gradient Ti-6Al-4V mesh designed by CAD software is shown in Figure 1-2 . The gradient porous material consists of two layers (outer layer and inner layer), the porosity of each layer is respectively: the outer layer is 68%, the inner layer is 76%, and the volume ratio of the outer layer to the inner layer is 1:1.5. The force analysis is carried out on the hole wall of the regular grid unit in each layer. By adjusting the force direction of the force acting on the hole wall, the buckling and bending components acting on the hole wall are adjusted so that the proportion of the buckling component is 85% ( Inner layer) and 30% (outer layer), to obtain such as figure 1 The grid units shown in (a)-(c) (the inner layer is a rhombic dodecahedral grid, and the outer layer is a G7 grid), the thickness of the hole wall is 0.5mm. Using Ti-6Al-4V alloy powder as raw material, the gradient porous Ti-6Al-4V bulk material was prepared by Arcam A1 electron beam melting equipment...

Embodiment 2

[0038] The gradient Ti-6Al-4V mesh designed by CAD software is shown in Figure 5-6 . The gradient porous material consists of two layers (outer layer and inner layer), the porosity of each layer is respectively: the outer layer 58%, the inner layer 70%, the volume ratio of the outer layer to the inner layer is 1:1. By adjusting the force direction of the force acting on the hole wall, the buckling and bending components acting on the hole wall are adjusted so that the proportions of the buckling components are 100% (inner layer) and 30% respectively. % (outer layer), obtained as Figure 5 The grid units shown in (a)-(c) (the inner layer is a cubic grid, the outer layer is a G7 grid), and the thickness of the hole wall is 0.5 mm. Using Ti-6Al-4V alloy powder as raw material, the gradient porous Ti-6Al-4V bulk material was prepared by Arcam A1 electron beam melting equipment. The electron beam scanning speed was 100mm / s and the electron beam current was 1.2mA. The prepared g...

Embodiment 3

[0041] The gradient Ti-6Al-4V mesh designed by CAD software is shown in Figure 9-10 . The gradient porous material has 3 layers of upper, middle and lower layers, and the porosity of each layer is 81% (upper layer), 85% (middle layer), and 88% (lower layer), and the volume ratio of the upper, middle and lower layers is 1:1. : 1, carry out the force analysis on the hole wall of the regular grid unit in each layer, adjust the buckling and bending components acting on the hole wall by adjusting the force direction of the force acting on the hole wall, so that the proportions of the buckling components are respectively 65% (upper layer), 51% (middle layer) and 35% (lower layer), obtained as Figure 9 The grid units shown in a, b, and c (the upper, middle, and lower grids are all rhombic dodecahedral grids), the thickness of the hole wall is 0.5mm. Using Ti-6Al-4V alloy powder as raw material, the gradient porous Ti-6Al-4V bulk material was prepared by Arcam A1 electron beam mel...

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Abstract

The invention discloses a gradient porous Ti-6Al-4V block material concurrently having high strength and high absorption energy, and a preparation method thereof, and belongs to the technical field of porous materials. According to the present invention, the large size Ti-6Al-4V gradient porous material with an effectively density of 0.2-2.0 g / cm<3> is prepared through an electron beam melting metal forming technology, and by adjusting the porosity distribution and the unit structure and optimizing the process parameters, the lightweight Ti-6Al-4V porous material concurrently having high strength (~200 MPa) and high absorption energy (~90 MJ / m<3>) and having low elastic modulus (0.1-20 GPa) is obtained; and the preparation method has characteristics of simple process and low cost, and is suitable for industrial scale production, and the porous Ti-6Al-4V block material can be widely used in the fields of aerospace, medical treatment, and the like.

Description

Technical field: [0001] The invention relates to the technical field of porous materials, in particular to a porous Ti-6Al-4V block material with high strength and high absorption energy gradient and a preparation method thereof. Background technique: [0002] Porous titanium and titanium alloy materials are widely used in medical, aerospace and other fields due to their advantages such as small specific gravity, good energy absorption, large specific surface area, good sound absorption, and strong permeability. In the medical field, porous titanium and titanium alloys have a lower elastic modulus than their dense bulk materials, which can match the bone modulus of the human body, and can effectively avoid the "stress shielding" effect; A large number of pores are more conducive to the ingrowth of surrounding cells and the growth of new bone, the delivery of therapeutic drugs, the exchange of nutrients, etc., thereby promoting the reconstruction of the implant and the natura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C14/00B22F3/11B33Y10/00B33Y70/00
Inventor 李述军侯文韬赵朔徐勤思郝玉琳杨锐
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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