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Three-dimensional reconstruction method of alloy type metal material

A metal material, three-dimensional reconstruction technology, applied in the field of three-dimensional reconstruction, can solve the problems of particle beam damage on the surface of the sample, difficult to accurately identify the second phase particles, and not good at complex phase morphology.

Active Publication Date: 2021-05-28
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: EBSD is not good at accurate characterization of complex phase morphology, and a large number of second-phase particles are often difficult to be accurately identified when calibrating alloy-type metal materials. Focused ion beam (Focused Ion Beam) Beam, referred to as FIB) bombardment method to prepare the surface of the alloy metal material to be tested layer by layer, the surface of the sample is easily damaged by the particle beam, and the cost is high, generally only suitable for 3D reconstruction of small-sized areas

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  • Three-dimensional reconstruction method of alloy type metal material

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Embodiment 1

[0035] Embodiment 1 of the present invention provides a method for three-dimensional reconstruction of alloy metal materials. see figure 1 , figure 1 It is a schematic flow chart of an embodiment of the three-dimensional reconstruction method of the present invention. The alloy metal material in this embodiment is aluminum alloy. In other embodiments of the present invention, the objects of three-dimensional reconstruction can also contain a large number of second phase particles of other types metal material. Such as figure 1 As shown, the 3D reconstruction of alloy-type metal materials includes the following steps:

[0036] 1) Perform mechanical polishing and electrochemical polishing on the surface of the alloy metal material to be tested.

[0037] A fully automatic grinding and polishing machine is used to mechanically polish the surface of the alloy metal material to be tested. First, it is mechanically ground by 400#, 800#, 1200# and 2000# sandpaper, and then 9μm and...

Embodiment 2

[0051] see Figure 4 , Figure 4 It is a schematic flowchart of another embodiment of the method for three-dimensional reconstruction of alloy metal materials of the present invention. Such as Figure 4 As shown, the alloy-type metal material in this embodiment uses tin alloy. Due to its very low strength, tin alloy is very easy to embed abrasive particles in mechanical polishing and cause pollution. Therefore, the method of precision turning is used instead of mechanical polishing to test the alloy. The surface of the type metal material is smoothed. The three-dimensional reconstruction of the alloy metal material in the embodiment includes the following steps:

[0052] 1) Perform precision turning and electrochemical polishing on the surface of the alloy metal material to be tested.

[0053] Use precision turning equipment to turn the surface of the alloy metal material to be tested, and the roughness after smoothing is Ra≤0.5μm. Then immerse the sample in a mixture of ...

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Abstract

The invention discloses a three-dimensional reconstruction method of an alloy type metal material, relates to the technical field of three-dimensional reconstruction, and solves the problem that EBSD is not good at accurate characterization of complex phase morphology. The method comprises the following steps: selecting a test area on the surface of a to-be-tested alloy type metal material, making a hardness indentation beside the test area, measuring the diagonal length of the hardness indentation, carrying out polishing treatment, measuring the change of the diagonal length of the polished hardness indentation, and calculating the polishing depth to determine the distance between adjacent test surfaces; carrying out matching correction on the EBSD image and the BSE image of each layer of test surface; and performing three-dimensional reconstruction on the corrected two-dimensional test image of each layer of test surface. According to the method, the defects of the EBSD technology in the aspect of discriminating the second-phase particles with the complex morphology are effectively overcome through BSE image acquisition, and the obtained three-dimensional reconstruction body can more accurately reflect the real information of the microstructure in the material.

Description

technical field [0001] The invention relates to the technical field of three-dimensional reconstruction, in particular to a method for three-dimensional reconstruction of alloy metal materials. Background technique [0002] The internal structure of alloy-type metal materials is often composed of a matrix phase and a large number of second-phase particles of various sizes. These second-phase particles have an important impact on the evolution of the structure and properties of metal materials during processing. For example, during the alloy recrystallization process, the coarse second phase particles can induce the "particle-promoted nucleation" effect, while the fine precipitated phase particles can have a "pinning" effect on the migration of dislocations and grain boundaries. The performance changes of metal materials during processing are usually closely related to the changes in their internal microstructure, so the accurate characterization of microstructure is very imp...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06T7/00G06K9/32G06K9/62G01N3/42G01N23/203G01N23/2055G01N23/20058G01N23/2251
CPCG06T17/00G06T7/0004G01N3/42G01N23/203G01N23/2055G01N23/20058G01N23/2251G06T2207/30136G01N2203/0078G01N2223/053G01N2223/056G01N2223/102G01N2223/09G06V10/25G06F18/22
Inventor 张永皞杨川杨琴孙明艳张志清刘庆陈捷范啟超黄姝珂
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS