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GH3030 high-temperature alloy as-cast metallographic etchant and preparing method and using method thereof

A technology of GH3030 and high-temperature alloy, which is applied in the field of metallographic corrosion liquid, can solve the problems of poor corrosion effect and unsatisfactory effect, and achieve the effect of improving product quality, improving product quality and product yield, and good corrosion effect

Inactive Publication Date: 2015-11-04
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the currently available data, there are very few metallographic corrosion solutions for nickel-based superalloys, and even less metallographic corrosion solutions for GH3030 alloys. At present, aqua regia is used for corrosion, but the corrosion effect is not good through experimental verification. , and the use of acid and ferric chloride solution for corrosion, the effect is not ideal

Method used

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  • GH3030 high-temperature alloy as-cast metallographic etchant and preparing method and using method thereof
  • GH3030 high-temperature alloy as-cast metallographic etchant and preparing method and using method thereof
  • GH3030 high-temperature alloy as-cast metallographic etchant and preparing method and using method thereof

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Effect test

Embodiment 1

[0034] A GH3030 superalloy as-cast metallographic corrosion solution, consisting of the following components: 22 mL of concentrated hydrochloric acid, 20 mL of water, and 4 g of copper sulfate, wherein the concentrated hydrochloric acid is analytically pure, with a mass fraction of 36%-38%.

[0035] When preparing the GH3030 superalloy as-cast metallographic corrosion solution, first weigh 4g of copper sulfate and pour it into an 80 mL beaker, then measure 20 mL of water and pour it into the beaker, then measure 22 mL of concentrated hydrochloric acid and pour it into the beaker , stir with a glass rod to completely melt the copper sulfate and let it stand for at least 10 minutes.

[0036] When using this GH3030 superalloy as-cast metallographic corrosion solution, the cross-section on the GH3030 superalloy forging produced by a certain enterprise is sampled earlier, and is cut into a metallographic sample of 15X15X15mm with a cutting machine, and the number is 1# sample and 2...

Embodiment 2

[0038] A GH3030 superalloy as-cast metallographic corrosion solution, consisting of the following components: 21 mL of concentrated hydrochloric acid, 21 mL of water, and 5 g of copper sulfate, wherein the concentrated hydrochloric acid is analytically pure, with a mass fraction of 36%-38%.

[0039] When preparing the GH3030 superalloy as-cast metallographic corrosion solution, first weigh 5g of copper sulfate and pour it into an 80 mL beaker, then measure 21 mL of water and pour it into the beaker, then measure 21 mL of concentrated hydrochloric acid and pour it into the beaker , stir with a glass rod to completely melt the copper sulfate and let it stand for at least 10 minutes.

[0040]When using this GH3030 superalloy as-cast metallographic corrosion solution, earlier the cross-section on the GH3030 superalloy forging produced by a certain enterprise was sampled, and cut into 15X15X15mm metallographic samples with a cutting machine, numbered as 3# sample and 4# sample; use...

Embodiment 3

[0042] A GH3030 superalloy as-cast metallographic corrosion solution is composed of the following components: concentrated hydrochloric acid 23mL, water 19mL, copper sulfate 3g, wherein the concentrated hydrochloric acid is analytically pure, and the mass fraction is 36%-38%.

[0043] When preparing the GH3030 superalloy as-cast metallographic corrosion solution, first weigh 3g of copper sulfate and pour it into an 80 mL beaker, then measure 19 mL of water and pour it into the beaker, then measure 23 mL of concentrated hydrochloric acid and pour it into the beaker , Stir with a glass rod, and let the copper sulfate stand still for at least 10 minutes after the copper sulfate is completely melted.

[0044] When using this GH3030 superalloy as-cast metallographic corrosion solution, earlier the cross-section on the GH3030 superalloy forging produced by a certain enterprise was sampled, and cut into 15X15X15mm metallographic samples with a cutting machine, numbered as 5# sample an...

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Abstract

The invention discloses a GH3030 high-temperature alloy as-cast metallographic etchant and a preparing method and a using method thereof. The etchant is composed of concentrated hydrochloric acid, water and copper sulfate. The ratio of the concentrated hydrochloric acid to the water to the copper sulfate is 21-23 mL:19-21 mL:3-5 g. The metallographic structure of GH3030 high-temperature alloy can be rapidly and efficiently obtained through etching by means of the GH3030 high-temperature alloy as-cast metallographic etchant, the etching effect is good, and thus the metallographic structure of the researched and developed product can be observed. After the GH3030 high-temperature alloy is etched, the metallographic structure and a grain boundary are very clear, grains are displayed completely, and therefore manufacturing enterprises can develop new products and observe the structures of the new products; the grain size of the GH3030 high-temperature alloy can be accurately measured through a metallographic microscope, production technology parameters are adjusted and optimized through measurement of the grain size, and the product quality of the developed products is mastered and promoted.

Description

technical field [0001] The invention relates to a metallographic corrosion liquid, in particular to a GH3030 superalloy as-cast metallographic corrosion liquid and its preparation method and use method. Background technique [0002] The GH3030 superalloy is a solid solution strengthened superalloy, and its chemical composition is shown in Table 1. Phase is the main strengthening phase, adding titanium, manganese and other strengthening elements to the austenitic solid-solution strengthening alloy, and containing a small amount of aluminum and low carbon, with metastable Phase strengthening, trace amounts of aluminum and magnesium can inhibit Towards transformation. Its chemical composition is simple, it has satisfactory thermal strength and high plasticity below 800 ° C, and has anti-oxidation, anti-fatigue, cold stamping and welding process properties. It is mainly used for turbine engine combustor parts working below 800°C and other high-temperature parts that r...

Claims

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Application Information

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IPC IPC(8): C23F1/28G01N1/32
Inventor 杨志强陈琴刘广龙王克震段国武任达进
Owner JINCHUAN GROUP LIMITED
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