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Method for measuring hydrogen content in powder high-temperature alloy

A technology of superalloy and hydrogen content, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as affecting the accuracy of measurement results, poor matching, etc., to ensure consistency, improve accuracy, and improve accuracy. Effect

Active Publication Date: 2011-11-30
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The measurement of hydrogen content in materials by inert gas pulse heating-thermal conductivity method needs to rely on steel standard substances with similar composition to the material. Poor matching of morphology and composition affects the accuracy of determination results

Method used

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  • Method for measuring hydrogen content in powder high-temperature alloy
  • Method for measuring hydrogen content in powder high-temperature alloy
  • Method for measuring hydrogen content in powder high-temperature alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Determination of the hydrogen content in the FGH95 powder superalloy is characterized in that the hydrogen content in the powder superalloy is measured by a hydrogen measuring instrument using the inert gas pulse heating-thermal conduction method. The working conditions of the hydrogen measuring instrument are as follows: the measurement flow rate is 110cc / min, the measurement The pressure is 14.5psi, the inlet pressure is 39psi, the degassing temperature is 2800°C, the analysis temperature is 2000°C, and the degassing time is 50s;

[0048] 1. The spare parts used in the measurement process are as follows:

[0049] 1.1. Acetone, excellent grade or high purity or MOS grade;

[0050] 1.2, sucrose, analytically pure;

[0051] 1.3. Standard substance with high hydrogen content: American LECO501-529, hydrogen content: 6.0ppm±0.2ppm, 1.00g / grain;

[0052] 1.4. Low-content hydrogen standard substance: American LECO762-747, hydrogen content: 1.8ppm±0.4ppm, 1.00g / grain;

[0053...

Embodiment 2

[0066] Determination of the hydrogen content in the FGH96 powder superalloy is characterized in that the hydrogen content in the powder superalloy is measured by a hydrogen measuring instrument using the inert gas pulse heating-thermal conductivity method. The working conditions of the hydrogen measuring instrument are as follows: the measuring flow rate is 120cc / min, the measuring The pressure is 15psi, the inlet pressure is 40psi, the degassing temperature is 2850°C, the analysis temperature is 2100°C, and the degassing time is 50s;

[0067] 1. The spare parts used in the measurement process are as follows:

[0068] 1.1. Acetone, excellent grade or high purity or MOS grade;

[0069] 1.2, sucrose, analytically pure;

[0070] 1.3. Standard substance with high hydrogen content: American LECO501-529, hydrogen content: 6.0ppm±0.2ppm, 1.00g / grain;

[0071] 1.4. Low-content hydrogen standard substance: American LECO762-747, hydrogen content: 1.8ppm±0.4ppm, 1.00g / grain;

[0072] ...

Embodiment 3

[0085] Determination of the hydrogen content in the FGH97 powder superalloy is characterized in that the hydrogen content in the powder superalloy is measured by a hydrogen measuring instrument using the inert gas pulse heating-thermal conductivity method. The working conditions of the hydrogen measuring instrument are as follows: the measuring flow rate is 120cc / min, the measuring The pressure is 14.5psi, the inlet pressure is 39psi, the degassing temperature is 2900°C, the analysis temperature is 2000°C, and the degassing time is 50s;

[0086] 1. The spare parts used in the measurement process are as follows:

[0087] 1.1. Acetone, excellent grade or high purity or MOS grade;

[0088] 1.2, sucrose, analytically pure;

[0089] 1.3. Standard substance with high hydrogen content: American LECO501-529, hydrogen content: 6.0ppm±0.2ppm, 1.00g / grain;

[0090] 1.4. Low-content hydrogen standard substance: American LECO762-747, hydrogen content: 1.8ppm±0.4ppm, 1.00g / grain;

[0091...

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Abstract

The invention belongs to the alloy trace element analysis technology, and relates to a method for measuring hydrogen content in a powder high-temperature alloy. The method is characterized by measuring the hydrogen content in the powder high-temperature alloy with a hydrogen tester by an inert gas pulse heating-thermal conductance method and specifically comprising the following steps: weighing asample material; preparing a sample; performing a blank test; preparing a hydrogen calibration sample; calibrating the sample with the hydrogen tester; and measuring the hydrogen content in the sample. The method of the invention can help improve the accuracy of measuring results and solve the problem of measuring the hydrogen content in the powder high-temperature alloy.

Description

technical field [0001] The invention belongs to alloy trace element analysis technology, and relates to a method for measuring hydrogen content in powder superalloy. Background technique [0002] Powder metallurgy nickel-based superalloy plays an important role in engine components because of its good tensile strength and fatigue strength. With the development of the national defense industry, the performance requirements of materials are becoming more and more stringent, and some inclusions are the key factors affecting the performance. Therefore, accurate determination of the content of impurity element hydrogen in the alloy is very important for the evaluation of material performance. The analysis of hydrogen content in general materials generally adopts inert gas pulse heating-thermal conduction method, which is accurate and fast. However, there is no specific standard for detecting hydrogen content in powdered nickel-based superalloys by this method. Since the powder ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/00
Inventor 耿小颖杨春晟宋晓辉曹维
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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