Determination method for elastic constants of monocrystalline high temperature alloy

A technology of elastic constant and measurement method, which is applied in the direction of measuring device, analysis of solid with sound wave/ultrasonic wave/infrasonic wave, material analysis with sound wave/ultrasonic wave/infrasonic wave, etc. It can solve the difficulty of sample processing and the complex process of elastic constant of single crystal alloy , the large size of the material plate, etc., to achieve the effect of easy growth of single crystal, simple measurement process and data processing
CN110412126AActive Publication Date: 2019-11-05INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Publication Date
2019-11-05

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Abstract

The invention discloses a determination method for elastic constants of monocrystalline high temperature alloy, and belongs to the technical field of physical parameter determination of monocrystalline alloy. According to the method, two types of monocrystalline high temperature alloy plates with specific 3D orientations are prepared by a seed crystal method, first and second orientations of the first type of monocrystalline plate are (001) and (100) respectively, and first and second orientations of the second type of monocrystalline plate are (011) and (110) respectively. A rectangular elastic modulus sample whose length direction is in parallel with the primary orientation of the monocrystalline plate is cut from a material plate, and the young modulus E (001) and the shear modulus G(001)-(100) of the first type of sample and the shear modulus G (011)-(110) of the second type of sample are measured by a knock resonance method. The three elastic constants C11, C12 and C44 of the monocrystalline high temperature alloy can be simply calculated from the measured young modulus and two shear modulus.
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Description

technical field

[0001] The invention relates to the technical field of measuring physical property parameters of single crystal alloys, in particular to a method for measuring elastic constants of cubic single crystal superalloys at different temperatures. Background technique

[0002] Single crystal superalloys have a cubic crystal structure, and the most notable feature is anisotropy. The alloy has significant differences in Young's modulus and shear modulus along each crystal direction, while the bending frequency of single crystal and torsional frequency depend on the alloy's Young's modulus and shear modulus, respectively, so the vibration analysis of a single crystal blade must determine the modulus values ​​corresponding to its crystal orientation. Stress analysis of anisotropic single crystal superalloys must also fully understand the elastic properties of the alloy. A comprehensive description of the elastic properties of single crystal superalloys requires three el...

Claims

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