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Method for displaying metallographic microstructure of cobalt and nickel based wrought superalloy

A technology of deformed superalloy and microstructure, which is used in the display of metallographic microstructure of nickel-based deformed superalloy, the display agent of metallographic microstructure of cobalt and nickel-based deformed superalloy, and the display of metallographic microstructure and morphology, which can solve the problem of metallographic microstructure. The display effect is not ideal, the efficiency is low, and it cannot meet the needs of large-scale production, so as to achieve the effect of improving the efficiency of metallographic inspection and the quality of tissue display.

Inactive Publication Date: 2017-09-12
BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for displaying the metallographic microstructure of cobalt and nickel-based deformed superalloys, which solves the problem that the current method for displaying the metallographic microstructure of this type of alloy is low in efficiency, the display effect is not ideal, and it cannot meet the needs of large-scale production.

Method used

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  • Method for displaying metallographic microstructure of cobalt and nickel based wrought superalloy
  • Method for displaying metallographic microstructure of cobalt and nickel based wrought superalloy
  • Method for displaying metallographic microstructure of cobalt and nickel based wrought superalloy

Examples

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Effect test

Embodiment 1

[0021] The method of this implementation case includes the following steps:

[0022] 1. Take a 0.5mm cold-rolled metallographic sample of GH141 alloy, and obtain a bright and smooth metallographic observation surface after rough grinding and fine grinding and polishing of the sample.

[0023] 2. Calculated by mass percentage, mix 40% hydrochloric acid, 40% 30% hydrogen peroxide, and 20% water to form a chemical etching solution, put it in a glass beaker, soak the prepared metallographic sample in the solution for 3 seconds and take it out , immediately rinse with running water and blow dry.

[0024] 3. Observe the sample treated in step 2 under a metallographic microscope.

[0025] The cold-rolled metallographic structure of the GH141 alloy observed in this embodiment is as follows: figure 1 .

Embodiment 2

[0027] The method of this implementation case includes the following steps:

[0028] 1. Take a Φ20mm forged metallographic sample of GH605 alloy, and obtain a bright and flat metallographic observation surface after rough grinding and fine grinding and polishing of the sample.

[0029] 2. Calculated by mass percentage, mix 40% hydrochloric acid, 40% 30% hydrogen peroxide, and 20% water to form a chemical etching solution, put it in a glass beaker, soak the prepared metallographic sample in the solution for 3 seconds and take it out , immediately rinse with running water and blow dry.

[0030] 3. Observe the sample treated in step 2 under a metallographic microscope.

[0031] The forged metallographic structure of GH605 alloy Φ20mm observed in this example is as follows figure 2 .

Embodiment 3

[0033] The method of this implementation case includes the following steps:

[0034] 1. Take a 5.0mm hot-rolled metallographic sample of GH4169 alloy, and obtain a bright and flat metallographic observation surface after rough grinding and fine grinding and polishing of the sample.

[0035] 2. Calculated by mass percentage, mix 40% hydrochloric acid, 40% 30% hydrogen peroxide, and 20% water to form a chemical etching solution, put it in a glass beaker, soak the prepared metallographic sample in the solution for 3 seconds and take it out , immediately rinse with running water and blow dry.

[0036] 3. Observe the sample treated in step 2 under a metallographic microscope.

[0037] The GH4169 alloy 5.0mm hot-rolled metallographic structure observed in this embodiment is as follows image 3 .

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Abstract

The invention belongs to the technical field of metallographic detection and discloses a method for displaying a metallographic microstructure of cobalt and nickel based wrought superalloy. The method includes: polishing a metallographic sample to obtain a bright and smooth metallographic observation surface; preparing a displaying agent from, by mass, 15-60% of hydrochloric acid, 15-55% of 30% hydrogen peroxide and 5-30% of water; pouring the displaying agent into a beaker, soaking the metallographic sample into the solution, taking out the sample, immediately flushing with flowing clear water, blowing to dry after cleaning, and observing under a metallurgical microscopy. The method has advantages of quickness, clearness and accuracy in display of metallographic microstructure morphology of the cobalt and nickel based wrought superalloy under each process state.

Description

technical field [0001] The invention belongs to the technical field of metallographic examination, in particular to a method for displaying the metallographic microstructure of cobalt- and nickel-based deformed superalloys. In particular, it relates to a display agent for the metallographic microstructure of a cobalt- and nickel-based deformed superalloy and a method for using the same, which is suitable for displaying the metallographic microstructure of the cobalt- and nickel-based deformed superalloy in various process states. Background technique [0002] High-temperature alloys are alloys whose operating temperature exceeds 600°C, and have good thermal stability and thermal strength. According to its production process, it can be divided into two categories: wrought alloy (GH) and cast alloy (K). According to its composition, it can be divided into three categories: iron-based alloys, cobalt-based alloys and nickel-based alloys. Among them, cobalt and nickel-based def...

Claims

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Application Information

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IPC IPC(8): G01N21/84C23F1/28
CPCG01N21/84C23F1/28
Inventor 韩锋
Owner BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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