All view field statistics expression method of alloy microstructure via fluid micro-detection strain

A technology of microstructure and full field of view, which is applied in the field of surface micro-area analysis in the field of material science, can solve the problems of inaccurate quantitative determination, etc., and achieve the effects of easy standardization, avoiding interference factors, and wide application range

Inactive Publication Date: 2018-03-02
CENT IRON & STEEL RES INST
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Problems solved by technology

Therefore, the results of metallography have a certain degree of subjectivity and volatility, and cannot be accurately and quantitatively determined

Method used

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  • All view field statistics expression method of alloy microstructure via fluid micro-detection strain
  • All view field statistics expression method of alloy microstructure via fluid micro-detection strain
  • All view field statistics expression method of alloy microstructure via fluid micro-detection strain

Examples

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Embodiment

[0054] (Example for the characterization of carbide and ferrite micromechanical properties in high-chromium cast iron of brand KmTBCr15Mo)

[0055] In this embodiment, the full-field metallographic characterization of the carbide and ferrite microstructure in the brand KmTBCr15Mo high-chromium cast iron by isostatic pressing technology is taken as an example to illustrate.

[0056] Characterization of Micromechanical Properties of Carbide and Ferrite

[0057] a) The high-chromium cast iron sample of grade KmTBCr15Mo is prepared according to the requirements of metallographic analysis; the prepared sample is ground and polished to make the surface of the sample reach a mirror finish without grinding defects, and a square area is marked on the surface of the polished sample , the size of the marked area is 10mm×10mm.

[0058] b) Use a white light interference three-dimensional topography instrument to measure the initial topography of the alloy sample surface, and obtain the si...

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Abstract

The invention relates to an all view field statistics expression method of alloy microstructure via fluid micro-detection strain. The method includes the steps of: a) grinding and polishing the surface of an alloy sample to mirror finish degree, no polishing defect remaining, and determining a to-be-detected zone on the surface of the alloy sample; b) performing initial morphology measurement to the surface of the alloy sample via a white-light interference three-dimensional morphology instrument; c) performing isostatic pressing technology, acquiring microstructural deformation of the surfaceof the alloy sample, and performing morphology measurement to the surface of the alloy sample via the white-light interference three-dimensional appearance instrument after the deformation in order to obtain a micro-morphology change map of the alloy surface microstructure; d) performing cross-dimension rapid quantitative statistic distribution expression to morphology change before and after theisostatic pressing to the microstructure of the to-be-detected zone of the alloy sample, thus obtaining corresponding an all view field metallographic map. The method has simple pretreatment of samples, is high in analysis speed and is large in scanning area, and can satisfy demands of high-throughput cross-dimension analysis and further guide extraction of a metallographic characteristic unit ofthe material.

Description

technical field [0001] The invention belongs to the technical field of surface micro-area analysis in the field of material science, and in particular relates to a full-field statistical characterization method of alloy microstructure by fluid micro-detection strain, which is combined with isostatic fluid stress-strain technology to analyze Microstructure and metallography are assessed for quantitative statistical mapping across scales. Background technique [0002] In conventional metal microstructure inspection, the commonly used microstructure display methods after microstructure polishing include optical method, etching method and interference layer method, etc., and the subsequent microstructure inspection and metallographic analysis are mainly by means of microscopes. image analysis. The solution ratio and reaction time of the etching method have a direct impact on the authenticity and clarity of the metal structure, and the image observation is limited by the magnifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/225G01N23/2202
CPCG01N23/2202G01N23/225G01N2223/07G01N2223/607G01N2223/624G01B11/2441
Inventor 冯光贾云海王海舟毕中南沈学静王蓬秦海龙赵雷余兴李冬玲
Owner CENT IRON & STEEL RES INST
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