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Mechanical analysis method for high-temperature fatigue of high-temperature alloy baffles

An analytical method and technology for superalloys, which are applied in the direction of analyzing materials, scientific instruments, and testing the strength of materials by applying repetitive force/pulsation force, to achieve the effect of ensuring verticality and parallelism, ensuring dimensional accuracy, and high strength

Pending Publication Date: 2019-04-23
XIAN AERONAUTICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the prior art, there is no report on the high temperature fatigue mechanical analysis method of the superalloy baffle

Method used

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  • Mechanical analysis method for high-temperature fatigue of high-temperature alloy baffles
  • Mechanical analysis method for high-temperature fatigue of high-temperature alloy baffles
  • Mechanical analysis method for high-temperature fatigue of high-temperature alloy baffles

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Experimental program
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Embodiment Construction

[0030] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] 1. Small sample design and sampling of turbine disk baffle

[0032] The small specimen design of the front and rear baffles mainly considers two factors: specimen size and auxiliary fixtures.

[0033] 2.1. Sample size

[0034] According to GB / T 3075-2008 Metal Material Fatigue Test Axial Force Control Method, the cross-sectional size of the sample should be such that the maximum load expressed in absolute value is not less than 25% of the load of the testing machine. The mechanical properties of the front baffle and rear baffle were tested using a 505C / 02 hydraulic low cycle fatigue testing machine. The maximum load of the 505C / 02 hydraulic low cycle fatigue testing machine is 10kN. In order to meet the condition that the maximum load of the test is not less than 25% of the load of the testing mach...

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Abstract

The invention discloses a mechanical analysis method for high-temperature fatigue of high-temperature alloy baffles, and belongs to the technical field of mechanical property testing. The mechanical analysis method comprises the following steps: step 1, the front baffles and the rear baffles are sampled; step 2, a control stress ratio pull-pull test is adopted. Through the control stress ratio pull-pull test, baffle samples and clamps are adopted in the method, baffle samples can meet the requirements of a fatigue test, the clamps have high strength, the dimensional precision can be ensured, and verticality and parallelism need to be ensured during assembly.

Description

technical field [0001] The invention belongs to the technical field of mechanical performance testing, and in particular relates to a high-temperature fatigue mechanical analysis method of a high-temperature alloy baffle. Background technique [0002] Superalloys originated from special steels, and now refer to high-alloyed metal materials that can withstand relatively large and complex stresses under high-temperature conditions and have stability. Although the definition of high temperature is different at home and abroad: in China, a temperature above 600°C is usually defined as high temperature, while in foreign countries, a temperature above 1000°F (about 540°C) is defined as high temperature. Superalloys at home and abroad are mainly used in the manufacture of aero-engines and critical heat-resistant components in gas turbines. Superalloys can be divided into nickel-based superalloys, iron-nickel-based superalloys and cobalt-based superalloys according to their matrix ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32
CPCG01N3/32G01N2203/0073G01N2203/0226G01N2203/0017
Inventor 丁旭孟广慧王栓强鲁媛媛宗彦旭吴坤晓
Owner XIAN AERONAUTICAL UNIV
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