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Method and device for analyzing microscopic dislocation density distribution of metal materials

A technique of metal material and density distribution, applied in instrumentation, design optimization/simulation, calculation, etc.

Active Publication Date: 2021-09-14
INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS
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  • Application Information

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Problems solved by technology

At present, there are many methods that first use the micro-defect identification algorithm to effectively distinguish the dislocation atoms and calculate the Burgers vector of the corresponding dislocation segment, and then use the dislocation segment and the Burgers vector to do dyadic construction of the dislocation density distribution, but the results obtained by these methods are not The theoretically required atomic dislocation density

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  • Method and device for analyzing microscopic dislocation density distribution of metal materials
  • Method and device for analyzing microscopic dislocation density distribution of metal materials
  • Method and device for analyzing microscopic dislocation density distribution of metal materials

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Embodiment Construction

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0059] refer to figure 1 , is a schematic flowchart of a method for analyzing the microscopic dislocation density distribution of a metal material provided by an embodiment of the present invention. The method for analyzing the microscopic dislocation density distribution of metallic materials includes the following steps:

[0060] Step S1, obtaining all the plastic distortion information existing in the metal crystal, and classifying the plastic distortion inform...

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Abstract

The present invention provides a method and device for analyzing the microscopic dislocation density distribution of metal materials, which is based on the plastic distortion of metal crystals, which is not only applicable to all metal crystal materials, but also does not need to consider whether there are other micro-defect structures in metal crystal materials, and It can also directly analyze the dislocation density tensor of all atoms in the metal crystal material, thereby effectively avoiding human factors or environmental factors from affecting the calculation reliability of the atomic dislocation density tensor and reducing the calculation cost of the atomic dislocation density tensor.

Description

technical field [0001] The invention relates to the technical field of microstructure analysis of metal materials, in particular to a method and device for analyzing the microscopic dislocation density distribution of metal materials. Background technique [0002] Reasonable description and accurate characterization of dislocation properties in metals are the basic prerequisites for constructing constitutive models based on the plastic deformation mechanism of metals. The dislocation density used in the traditional constitutive model only simply describes the length of dislocation lines, but cannot effectively characterize the lattice distortion caused by dislocations inside the metal. The Burgers vector in the crystal is defined by the Burgers circuit method, and the lattice structure itself defines the type of Burgers vector. In continuum mechanics, the Burgers vector is the characterization of incongruous translational deformation, which can be of any size and orientatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06K9/62G06F113/00
CPCG06F30/20G06F2113/00G06F18/2411
Inventor 卢果
Owner INST OF APPLIED PHYSICS & COMPUTATIONAL MATHEMATICS