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Experimental method for simulating grain boundary migration

An experimental method and technology of grain boundary migration, which can be used in measurement devices, instruments, scientific instruments, etc., can solve the problems of limited symmetric inclined grain boundaries and inability to truly reflect the grain boundary migration research object, and achieve the effect of avoiding grain boundary migration.

Pending Publication Date: 2022-03-01
NANTONG L S LIGHT METAL FORMING
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an experimental method for simulating grain boundary migration, which can solve the problem that the research object of general grain boundary migration is limited to the special grain boundary of symmetrical inclined grain boundary or the special case of metal thin film, which cannot be real Problems reflected in real bulk polycrystalline environments

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  • Experimental method for simulating grain boundary migration
  • Experimental method for simulating grain boundary migration
  • Experimental method for simulating grain boundary migration

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0021] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention relates to an experimental method for simulating grain boundary migration. The experimental method is characterized by comprising the following specific steps: S1, selecting a single crystal sample; s2, stacking the single crystal samples; s3, rotating the single crystal sample; s4, cutting the sample; the method comprises the following steps of: constructing a real polycrystalline system under a large-volume sample by taking laminated single-crystal high-purity metal as an object, and screening out grain boundary characteristic information capable of migrating under the action of shear stress on the basis of adopting a high-pressure torsion process; the characteristic information makes research on a common crystal boundary migration mechanism of shear coupling possible.

Description

technical field [0001] The invention relates to the technical field of grain boundary migration, in particular to an experimental method for simulating grain boundary migration. Background technique [0002] Metal materials are widely used in all aspects of human society, known as the skeleton of modern industrial civilization, and the most important structural materials in human daily production and life. With the development of society, people put forward higher and higher requirements for the performance of metal materials. The performance of metal materials depends on their microstructure, so the optimization of their microstructure has become a research hotspot that has attracted much attention in the past few decades. The vast majority of metal materials are polycrystalline, and the grains with different spatial orientations and the grain boundaries between the grains constitute the most basic microstructural unit. The properties, structure and movement of the grain b...

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Application Information

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IPC IPC(8): G01N19/00G01N23/00
CPCG01N19/00G01N23/00
Inventor 刘榆杨勇飞周素洪刘勇瞿峰
Owner NANTONG L S LIGHT METAL FORMING
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