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Metallographic corrosive agent for double-phase medium manganese steel and metallographic structure display method

A technology of metallographic structure display and corrosive agent, which is applied in the preparation of test samples, instruments, analysis materials, etc., can solve the problems of unsatisfactory metallographic corrosion effect, difficult to grasp the corrosion effect, unclear corrosion effect, etc., and achieve the corrosion effect. Good, easy to corrode, smooth and smooth surface

Active Publication Date: 2021-05-28
沧州赛腾特种材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metallographic corrosion effect of the traditional corrosion solution on the dual-phase medium manganese steel is not ideal, the corrosion time is long and the corrosion effect is not clear
At the same time, for the corrosion of test specimens with different heat treatments of medium manganese steel, it was found that the corrosion conditions of samples in different heat treatment states were different, especially the corrosion time was different with the heat treatment state of the test steel, and the corrosion time was different in different medium manganese steels. It varies from a few seconds to a few minutes, and the time range is relatively large, which makes the corrosion process more complicated and the corrosion effect is more difficult to grasp

Method used

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  • Metallographic corrosive agent for double-phase medium manganese steel and metallographic structure display method
  • Metallographic corrosive agent for double-phase medium manganese steel and metallographic structure display method
  • Metallographic corrosive agent for double-phase medium manganese steel and metallographic structure display method

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Embodiment 1

[0036] This embodiment provides a metallographic etchant for dual-phase medium manganese steel, which is prepared by the following method:

[0037] First measure 30ml of deionized water, then measure 25ml of absolute ethanol and add it to the deionized water, then measure 6ml of concentrated sulfuric acid and add it, measure 40ml of hydrochloric acid and add it, weigh 2g of sodium chloride and add it, and finally weigh 5g of copper chloride dihydrate Add to beaker and stir with glass rod until completely dissolved.

Embodiment 2

[0039] This embodiment provides a metallographic etchant for dual-phase medium manganese steel, which is prepared by the following method:

[0040] First measure 40ml of deionized water, then measure 30ml of absolute ethanol and add it to deionized water, then measure 8ml of concentrated sulfuric acid and add it, measure 55ml of hydrochloric acid and add it, weigh 2g of sodium chloride and add it, and finally weigh 15g of copper chloride dihydrate Add to beaker and stir with glass rod until completely dissolved.

Embodiment 3

[0042] This embodiment provides a metallographic etchant for dual-phase medium manganese steel, which is prepared by the following method:

[0043] First measure 55ml of deionized water, then measure 40ml of absolute ethanol and add it to deionized water, then measure 8ml of concentrated sulfuric acid and add it, measure 65ml of hydrochloric acid and add it, weigh 3g of sodium chloride and add it, and finally weigh 15g of copper chloride dihydrate Add to beaker and stir with glass rod until completely dissolved.

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Abstract

The invention provides a metallographic corrosive agent for double-phase medium manganese steel and a metallographic structure display method. The metallographic corrosive is a mixed solution formed by copper chloride dihydrate, concentrated hydrochloric acid, absolute ethyl alcohol, sodium chloride, concentrated sulfuric acid and water. The metallographic structure display method comprises the following steps: providing a double-phase medium manganese steel sample; manually grinding and mechanically polishing the double-phase medium manganese steel sample; immersing the polished medium manganese steel sample in a metallographic corrosive at the temperature of 20 to 30 DEG C, slightly rotating and stirring, corroding for 10 to 20 s and then taking out; and cleaning the corroded medium manganese steel sample with detergent, alcohol and clear water sequentially and blow-drying, and carrying out observation through a metallographic microscope. The metallographic corrosive is simple in preparation method and convenient to use, the corrosion effect is good through the method, and the austenite ferritic structure effect of the two-phase medium manganese steel material can be clearly analyzed.

Description

technical field [0001] The invention relates to a metallographic etchant for dual-phase medium manganese steel and a method for displaying the metallographic structure. Background technique [0002] The internal structure of metal materials is closely related to the properties of materials such as hardness, strength, and ductility, and metallographic observation is the most direct and effective method to study the internal structure of metal materials. Metallography refers to the chemical composition of metals or alloys and the physical and chemical states of various components inside the metal or alloy. Using the principle of quantitative metallography, the three-dimensional spatial morphology of the metallographic structure of the metallographic sample is determined by the measurement and calculation of the metallographic microstructure of the two-dimensional metallographic sample surface or thin film, so as to establish the relationship between composition, structure and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/32G01N1/28G01N21/84C23F1/28
CPCG01N1/32G01N1/286G01N21/84C23F1/28
Inventor 陈雷刘胜杰陈义成陈军贾祺祥
Owner 沧州赛腾特种材料科技有限公司
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