Method for measuring volume fraction of gamma' phase in nickel-based single crystal superalloy
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A high-temperature alloy, nickel-based single crystal technology, applied in measurement devices, analysis materials, material analysis using wave/particle radiation, etc., can solve problems such as large errors and poor repeatability, and achieve small errors, simple operation, and simple configuration. Effect
Inactive Publication Date: 2018-01-19
HUANENG POWER INTERNATIONAL +1
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[0007] The purpose of the present invention is to provide a method for measuring the nickel-based phase volume percentage using Adobe Photoshop software, aiming at the technical deficiencies and existing problems such as large errors and poor repeatability of the measurement and calculation method of the γ' phase volume percentage in the existing nickel-based single crystal superalloy. The method of γ′ phase volume fraction in single crystal superalloy has the advantages of accurate measurement and calculation results, small error, good repeatability, reliability, simple, convenient and fast operation, etc. γ′ phase volume fraction was measured
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Embodiment 2
[0066] Experimental Alloy CMSX-10.
[0067] a) Sample preparation
[0068] The nickel-based superalloy samples that need to be detected and analyzed are intercepted by wire cutting, and the oil stains remaining on the surface of the samples during the cutting process are cleaned with acetone or alcohol. After the samples are ground and polished, they are made of HNO with a volume ratio of 1:2:3. 3 , HF and C 3 h 5 (OH) 3 The mixed solution is used for corrosion treatment.
[0069] b) Acquisition of microstructure and morphology images of nickel-based superalloys
[0070] The processed sample was magnified 10,000 to 50,000 times with a ZEISS SUPRA 55 field emission scanning electron microscope to observe the morphology and distribution of the γ′ phase, and the microstructure image was obtained with the camera of the scanning electron microscope system.
[0071] c) Image processing
[0072] Using Adobe Photoshop CS2 software, all γ′ phases in the microstructure topography ...
Embodiment 3
[0086] Experimental alloy DD403.
[0087] a) Sample preparation
[0088] The nickel-based superalloy sample that needs to be detected and analyzed is intercepted by wire cutting, and the oil stain remaining on the surface of the sample during the cutting process is removed by cleaning with acetone or alcohol. After the sample is ground and polished, it is made of HNO with a volume ratio of 1:2:3. 3 , HF and C 3 h 5 (OH) 3 The mixed solution is used for corrosion treatment.
[0089] b) Acquisition of microstructure and morphology images of nickel-based superalloys
[0090] The processed sample was magnified 10,000 to 50,000 times with a ZEISS SUPRA 55 field emission scanning electron microscope to observe the morphology and distribution of the γ′ phase, and the microstructure image was obtained with the camera of the scanning electron microscope system.
[0091] c) Image processing
[0092] Using Adobe Photoshop CS2 software, all γ′ phases in the microstructure topography...
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Abstract
The invention discloses a method for measuring volume fraction of gamma' phase in nickel-based single crystal superalloy, and belongs to the technical field of nickel-base single crystal high temperature microstructure analysis. The method comprises the following steps: (1) preparing a sample; (2) obtaining an image; (3) processing the image; (4) measuring and calculating; and the like. The calculation method for measuring the volume fraction of the gamma' phase in the nickel-based single crystal superalloy aims at the problems that in the prior art the method for measuring the volume fractionof the gamma' phase in the nickel-based single crystal superalloy has relatively-big errors in measurement results and poor repeatability, is not suitable for the measurement of the volume fraction of the gamma' phase in a micro zone. The calculation method for measuring the volume fraction of the gamma' phase in the nickel-based single crystal superalloy has the advantages of accurate measurement calculation results, small error, good repeatability, reliability, simple operation, convenience, quickness, and the lik, and can be used to measure the volume fraction of the gamma' phase in the nickel-based single crystal superalloy. The method is easy to implement and is suitable for the measurement and calculation of the volume fraction of the gamma' phase in the nickel-based single crystalsuperalloy.
Description
technical field [0001] The invention belongs to the technical field of high-temperature microstructure analysis of nickel-based single crystals, and in particular relates to a method for measuring the γ' phase volume fraction in nickel-based single crystal superalloys by using Adobe Photoshop software. Background technique [0002] Nickel-based single crystal superalloy is a multi-component multi-phase alloy, and the main constituent phases are γ matrix phase and γ′ strengthening phase. The γ phase is a solid solution with a face-centered cubic structure, and there are a large amount of solid solution strengthening elements such as Cr, Mo, W, and Re in solid solution. γ′ phase is L1 2 Structured with Ni 3 (Al, Ta, Ti)-based ordered intermetallic compounds are the most important strengthening phases in single crystal superalloys. The change of the quantity, size and shape of γ′ phase will cause the change of interfacial dislocation motion and dislocation network structure,...
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