Method for preparing gradient material by stirring friction welding and prepared gradient material

A gradient material and friction stir technology, applied in welding equipment, non-electric welding equipment, manufacturing tools, etc., can solve the problems of low production efficiency, high equipment cost, large pollution, etc., and achieve the effect of realizing continuous gradient materials and enriching preparation methods.

Active Publication Date: 2019-04-05
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the process is cumbersome, the equipment cost is high, the process is unstable, the utilization r

Method used

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  • Method for preparing gradient material by stirring friction welding and prepared gradient material
  • Method for preparing gradient material by stirring friction welding and prepared gradient material
  • Method for preparing gradient material by stirring friction welding and prepared gradient material

Examples

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Example Embodiment

[0055] Example 1:

[0056] The preparation in this example is 70% Al-30% Al 2 O 3 / 6061 aluminum alloy gradient material. The specific preparation steps are as follows:

[0057] Raw material selection and pretreatment: choose a 6061 aluminum alloy plate with a size of 100mm×90mm×3mm and a wedge-shaped 6061 aluminum alloy plate with a slope of H=0.05 with a size of 100mm×90mm×3mm, and apply sandpaper to two pieces of aluminum The surface of the alloy plate is smoothed and cleaned with acetone and air-dried. The size of the sprayed layer is 100mm×90mm×3mm, and the composition is 70% Al-30% Al 2 O 3 .

[0058] Raw material selection of the processing device: the material of the processing device is high-speed steel (W18Cr4V), the diameter of the shaft shoulder is 15mm, the diameter of the cylindrical stirring needle is 5mm, and the length is 5.5mm.

[0059] Processing parameter setting: The rotation speed of friction stir welding is 950rpm, the forward speed is 37.5mm / min, and the redu...

Example Embodiment

[0064] Example 2:

[0065] In this embodiment, a 70%Ti-30%SiC / AZ31 magnesium alloy gradient material is prepared. The specific preparation steps are as follows:

[0066] Raw material selection and pretreatment: AZ31 magnesium alloy flat plate with size of 100mm×70mm×4mm and wedge-shaped AZ31 magnesium alloy plate with size of 100mm×70mm×4mm with a slope of H=0.075 are respectively selected. Use sandpaper to smooth the surface of the two AZ31 magnesium alloy plates, clean the surface with acetone, and air dry. The size of the sprayed layer is 100mm×70mm×6mm, and the composition is 70% Ti-30% SiC.

[0067] The raw material selection of the processing device: the material of the processing device is XF20T tungsten steel, the diameter of the shaft shoulder is 16mm, the diameter of the cylindrical stirring needle is 5mm, and the length is 6.5mm.

[0068] Processing parameter setting: the rotation speed of friction stir welding is 1180rpm, the forward speed is 30mm / min, and the reduction ...

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Abstract

The invention discloses a method for preparing a gradient material by stirring friction welding and the prepared gradient material. According to the method, a base plate and a plate layer are involved, wherein a spraying layer is laid on the base plate, the plate layer covers the spraying layer to prefabricate a blank, the thickness of the spraying layer is changed in a gradient mode along the extending direction of the plate surface of the base plate, or the thickness of the plate layer is changed in a gradient mode along the extending direction of the plate surface of the base plate, and theblank is subjected to rolling, stirring, friction and welding in sequence to prepare the gradient material. By adopting the method, the method has the advantages that a large-volume gradient materialcan be prepared, the production efficiency is high, the process is stable, the material utilization rate is high, the energy consumption is low, the pollution is avoided, and the green and the environment protection purposes are achieved.

Description

technical field [0001] The invention belongs to the technical field of preparation of gradient materials, and in particular relates to a method for preparing gradient materials by friction stir welding and the obtained gradient materials. Background technique [0002] Gradient materials refer to heterogeneous composite materials whose structure and properties change continuously or quasi-continuously in the direction of material thickness or length. Gradient materials are widely used in aerospace, mechanical, electromagnetic, biological, nuclear energy and electrical engineering fields, such as aerospace engines, bearings in mechanical engineering, magnetic disks and oscillators in electromagnetic engineering, teeth, bones, Joints, thermoelectric converters and other equipment in nuclear energy and electrical engineering. [0003] At present, the methods for preparing gradient materials mainly include chemical vapor deposition, physical evaporation, plasma spraying, particl...

Claims

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Application Information

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IPC IPC(8): B23P15/00B23K20/12
CPCB23K20/12B23P15/00
Inventor 王文韩鹏彭湃乔柯王快社张婷王庆娟张兵蔡军罗雷
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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