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Preparation method of high-temperature alloy metallographic specimen

A technology for metallographic samples and diamonds, which is applied in the field of preparing high-temperature alloy metallographic samples using automatic grinding and polishing machines, to achieve the effects of fewer types of consumables, easy automatic sample preparation, and reduced surface residual stress

Pending Publication Date: 2021-06-04
DAYE SPECIAL STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems existing in the prior art, the present invention provides a method of using an automatic grinding and polishing machine to prepare a metallographic sample of a superalloy. The metallographic sample prepared by this method can clearly observe the carbonization in the superalloy There are no pollutants on the edges of carbides, no cracking and peeling of carbides, etc., which can realize accurate identification of carbide particles and improve the accuracy of carbide detection

Method used

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  • Preparation method of high-temperature alloy metallographic specimen
  • Preparation method of high-temperature alloy metallographic specimen
  • Preparation method of high-temperature alloy metallographic specimen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The present embodiment prepares a GH141 high-temperature alloy gold phase sample, and its preparation method includes the steps of:

[0064] Step 1: Cut the test sample according to the detection requirements and the automatic grinding clip holder size.

[0065] Step 2: figure 1 As shown, the cut-cutting resistance test sample 1 is fixed to the clamp seat 3 of the automatic grinding blast, and the mortal solid position 4 is fixed, and see it. figure 1 . The surface to be tested for the test sample 1 is facing down and is as close as possible to the horizontal position. Since the polishing machine clamp holder is mostly circular, it is necessary to pay attention to the load-bearing dramatically 1 symmetry to maintain the loaded drain sample 1. Waiting to die on the automatic grinding machine clip hold position 4 figure 1 Indicated. The automatic polishing machine is coarse, fine grinding, rough thread, and the grinding diameter used in the refined process is 300mm, and the d...

Embodiment 2

[0079] The same technical parameters and steps as Example 1 were used to prepare a GH2132 high-temperature all-in-gold gold phase. Figure 5 It is a carbide morphology of the gold phase sample prepared in this embodiment. As can be seen from the figure, the carboned carbon of the gold phase sample prepared by the technical solution using the present embodiment is clearly visible, and there is no pollutant near the carbide, and there is no anti-crushing condition, and the gold phase automatic detection requirements can be met. .

Embodiment 3

[0081] The same technical parameters and steps as Example 1 were used to prepare GH3625 high-temperature co-gold group samples. Figure 6 It is a carbide morphology of the gold phase sample prepared in this embodiment. As can be seen from the figure, the carboned carbon of the gold phase sample prepared by the technical solution using the present embodiment is clearly visible, and there is no pollutant near the carbide, and there is no anti-crushing condition, and the gold phase automatic detection requirements can be met. .

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Abstract

The invention discloses a preparation method of a high-temperature alloy metallographic specimen. The preparation method comprises the following steps of: 1, performing cutting according to detection requirements and the size of a clamp seat of an automatic grinding and polishing machine to obtain a specimen to be ground and polished; 2, fixing the cut specimen to be ground and polished on the clamp seat of the automatic grinding and polishing machine; 3, setting grinding and polishing parameters on the automatic grinding and polishing machine; 4, starting the automatic grinding and polishing machine, and starting grinding and polishing according to the preset parameters; and 5, after grinding and polishing are finished, taking down the specimen immediately, and subjecting the specimen to cleaning and blow-drying, thus obtaining a metallographic specimen; wherein in the step 4, the grinding and polishing process comprises four procedures of rough grinding, fine grinding, rough polishing and fine polishing, and in the grinding and polishing process, a grinding and polishing disc and the clamp base rotate in the same direction. The method that the clamp seat and the grinding and polishing disc rotate in the same direction is adopted, through the synergistic effect of the grinding and polishing time and the force value of all grinding and polishing links, the high-temperature alloy metallographic specimen shows the real appearance of carbide, and full-automatic sample preparation of the metallographic specimen is easily achieved through the preparation method.

Description

Technical field [0001] The present invention belongs to the preparation of high temperature alloy gold phase samples, and in particular, the present invention relates to a method of preparing high temperature alloy metal using an automatic grinding machine. Background technique [0002] High temperature alloy is generally based on iron, nickel, cobalt, etc., add a certain alloy element, a type of metal material having a long time to operate at a high temperature and certain stress effect of 600 ° C, and good anti-oxidation Comprehensive performance of sexual and corrosion resistance, good fatigue properties, fracture toughness. [0003] Excellent performance of high temperature alloys is related to carbide in high temperature alloys, and the morphology, distribution, size, etc. of carbides determines the performance of high temperature alloys, and therefore it is necessary to study carbide in high temperature alloys. The carbide in the high-temperature alloy is one of the most ba...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N1/34G01N21/84
CPCG01N1/28G01N1/286G01N1/34G01N21/84G01N2001/2873
Inventor 杨娥周杨王立李波
Owner DAYE SPECIAL STEEL CO LTD
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