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Method for manufacturing quasicrystal-nanocrystalline modified gradient composite in laser additive mode

A laser additive and composite material technology, applied in the field of additive manufacturing, can solve the problems of poor wear resistance of titanium alloy surfaces, and achieve the effects of strong applicability, easy promotion and application, and strong wear resistance.

Active Publication Date: 2018-02-23
SHANDONG JIANZHU UNIV
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Problems solved by technology

[0014] The present invention adopts laser additive manufacturing technology, aiming at the defect of poor wear resistance of titanium alloy surface, first adopts laser alloying technology to prepare Stellite 12-B 4 C-Y 2 o 3 The lower layer; after that, laser melting deposits Stellite 12-B on its surface 4 C-Cu-Y 2 o 3 Mixing powders to prepare quasicrystalline-nanostructured composites to form gradient composites

Method used

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  • Method for manufacturing quasicrystal-nanocrystalline modified gradient composite in laser additive mode
  • Method for manufacturing quasicrystal-nanocrystalline modified gradient composite in laser additive mode
  • Method for manufacturing quasicrystal-nanocrystalline modified gradient composite in laser additive mode

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example 1

[0025] Cut the TA15 titanium alloy into a cuboid with a length of 30 mm, a width of 10 mm, and a thickness of 10 mm. Before laser processing, clean the surface of titanium alloy, wipe it clean and blow dry. Set the mass score to 89%Stellite 12, 10%B 4 C. 1%Y 2 o 3 The mixed powder is laser alloyed on the 30 mm × 10 mm surface of the titanium alloy to form a lower layer; after that, the mass fraction is 84% ​​Stellite 12, 10% B 4 C, 5%Cu and 1%Y 2 o 3 A mixture of powders is laser melt deposited on top of the lower layer to form the upper layer. The specific process steps are as follows:

[0026] (1) Before laser alloying, use No. 240 sandpaper to polish the surface of the cut TA15 titanium alloy to be laser-treated, so that the surface roughness reaches Ra 2.5 μm; then, rinse with water, and then use alcohol to melt the surface Wipe clean and blow dry;

[0027] (2) Weigh 89 g of Stellite 12 powder and B 4 C powder 10 g, Y 2 o 3 Put 1 g of powder into beaker No. 1; u...

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Abstract

The invention discloses a method for preparing a quasicrystal-nanocrystalline modified gradient composite through a laser 3D printing technology. Stellite 12-B4C-Y2O3 mixed powder is alloyed on the surface of TA15 alloy in a laser mode through a coaxial feeding method to form a lower layer of a thick structure. Stellite 12-B4C-Cu-Y2O3 mixed powder is deposited on the surface of the lower layer ina laser mode to form an upper layer of a compact structure. Good alloyed combination between the upper layer and the lower layer is formed, and both the upper layer and the lower layer have good abrasion resistance. The experiment result shows that many superfine nanocrystalline and quasicrystalline phases are generated along with addition of Cu, the structure of the gradient composite layer manufactured in the laser additive mode is changed, and the mechanical performance of the gradient composite layer is improved. Through the method, the gradient composite of the compact structure and withsuper-high abrasion resistance can be obtained.

Description

technical field [0001] The invention relates to a method for manufacturing quasicrystal-nanocrystal modified gradient composite materials by laser additive manufacturing, and belongs to the technical field of additive manufacturing. Especially related to a kind of Stellite 12-B used on the surface of titanium alloy 4 C-Cu-Y 2 o 3 A method for preparing quasicrystal-nanocrystal modified composite materials by mixing powders through laser processing technology. Background technique [0002] Additive manufacturing (3D printing) is strongly driving the rapid rise of emerging industrial technology groups, which conforms to the general trend of the new technology revolution, that is, the transformation from the traditional large-scale and mass production mode to the personalized, customized and small batch production mode. Laser alloying technology is an important branch of additive manufacturing, which can realize the nanostructure of the workpiece, and has the characteristics...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C19/07C22C32/00B22F1/00B22F3/105C22C1/05C22C1/10B33Y10/00B33Y70/00
CPCB22F1/0003C22C1/05C22C14/00C22C19/07C22C32/0005B33Y10/00B33Y70/00C22C2200/04C22C2200/06B22F10/00B22F10/322B22F10/34B22F10/25B22F10/36Y02P10/25
Inventor 李嘉宁安相琛刘鹏王哲张博伦石磊
Owner SHANDONG JIANZHU UNIV
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