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A kind of metallographic etchant for dual-phase medium manganese steel and method for displaying metallographic structure

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: 2022-07-15
沧州赛腾特种材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of metallographic etchant for dual-phase medium manganese steel and method for displaying metallographic structure
  • A kind of metallographic etchant for dual-phase medium manganese steel and method for displaying metallographic structure
  • A kind of metallographic etchant for dual-phase medium manganese steel and method for displaying metallographic structure

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Embodiment 1

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

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

Embodiment 2

[0039] The present 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 add 30ml of absolute ethanol into deionized water, then add 8ml of concentrated sulfuric acid, measure 55ml of hydrochloric acid, add 2g of sodium chloride, and finally weigh 15g of copper chloride dihydrate Add to beaker and stir with glass rod until completely dissolved.

Embodiment 3

[0042] The present 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, add 65ml of hydrochloric acid, add 3g of sodium chloride, 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 etchant for dual-phase medium manganese steel and a method for displaying metallographic structure. The metallographic etchant is a mixed solution formed by copper chloride dihydrate, concentrated hydrochloric acid, absolute ethanol, sodium chloride, concentrated sulfuric acid and water. The metallographic structure display method includes: providing a dual-phase medium-manganese steel sample; manually grinding and mechanically polishing the dual-phase medium-manganese steel sample; In the phase corrosive agent, slightly rotate and stir, and take it out after corroding for 10-20s; wash the corroded medium manganese steel sample with detergent, alcohol and water in turn, dry it, and observe it through a metallographic microscope. The preparation method of the metallographic etchant is simple, and the use method is convenient. Through the method, the corrosion effect is good, and the austenitic ferrite structure effect of the dual-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 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 a metal or alloy 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 measuring and calculating the metallographic microstructure of the ground surface or thin film of the two-dimensional metallographic sample, so as to establish the relationship between composition, structure and...

Claims

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Application Information

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Patent Type & Authority Patents(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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