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Additive manufacturing method of low-modulus titanium/titanium stratified material

A technology of additive manufacturing and low modulus, applied in the field of preparation of layered metal composite materials, can solve the problems of high material modulus, high fracture toughness of TC4, and unsuitability

Active Publication Date: 2020-04-28
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

[0007] However, the above-mentioned patents have the following deficiencies. One is that the spherical powder of TC4 alloy prepared by the plasma rotating electrode atomization method has a higher cost; the other is that the biggest problem of TC4 as a biomedical material is that the modulus is much higher than that of human bones and teeth. The fracture toughness of TC4 prepared by the method is very high, so it can be seen that the modulus of the material is very high, and it is not suitable for being used as a human implant material

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[0033]The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0034] figure 1 It is a schematic diagram of coaxial powder feeding 3D printing in an embodiment of the present invention. Powder laying 3D printing is generally more suitable for printing of a single material, which is convenient for powder recycling, but there are still certain limitations for multi-material printing. In this example, the TC4 / β titanium alloy layered material was prepared by coaxial powder feeding. like figure 1 As shown, the printing equipment is equipped with a MFSC2000W fib...

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Abstract

The invention provides an additive manufacturing method of a low-modulus titanium / titanium stratified material. According to the additive manufacturing method, alternating deposition is carried out oncommercial TC4 powder and beta titanium alloy powder through coaxial powder feeding laser deposition equipment to obtain a laminar composite. The additive manufacturing method specifically comprisesthe following steps of taking and feeding Ti-6Al-4V powder and the beta titanium alloy powder into two powder tanks of the direct laser deposition equipment; and carrying out alternating cladding on the two kinds of titanium alloy powder under a protective atmosphere to obtain a molded sample piece. The TC4 / beta titanium alloy laminar composite with the good metallurgical bonding performance can be prepared through the additive manufacturing method. The advantages of the TC4 / beta titanium alloys are integrated, and the high-strength and low-modulus composite titanium alloy material is obtained.

Description

technical field [0001] The invention relates to the preparation of layered metal composite materials, in particular to an additive manufacturing method of low modulus titanium / titanium layered materials. Background technique [0002] Layered metal composites, a special form of composite material in which two or more metal layers are bonded together alternately, thereby integrating the favorable properties of the constituent materials, have attracted extensive attention in recent years. Among them, the more representative one is the laminated metal composites (LMCs), which have been studied more in recent years. Depending on the material chosen, LMC can significantly improve many properties, including fracture toughness, fatigue behavior, corrosion resistance, and ductility. Currently, laminates are used in automotive, aerospace and other industries. [0003] The methods for preparing layered metal materials can be divided into two categories, one is the "bottom-up" method,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105C22C1/04C22C14/00B33Y10/00B33Y50/02
CPCC22C1/0458C22C14/00B33Y10/00B33Y50/02B22F10/00B22F10/322B22F10/25B22F10/34B22F10/36B22F12/20Y02P10/25
Inventor 董安平张婷许浩李仲杰邢辉汪东红祝国梁疏达孙宝德张秋娟牛小东
Owner SHANGHAI JIAO TONG UNIV
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