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Non-destructive measurement method of reinforcement content in particle-reinforced metal matrix composite

A technology of composite materials and particle reinforcement, which is applied in the direction of measuring devices, analyzing materials, and using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc. The lift-off effect has a large influence, and achieves the effect of fast measurement speed, reduced time and economic cost, and low requirements

Active Publication Date: 2019-01-15
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the results of the density method are not intuitive, and the reinforcement distribution information in the local area cannot be obtained; the conductivity method is greatly affected by factors such as surface state and lift-off effect.

Method used

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  • Non-destructive measurement method of reinforcement content in particle-reinforced metal matrix composite
  • Non-destructive measurement method of reinforcement content in particle-reinforced metal matrix composite
  • Non-destructive measurement method of reinforcement content in particle-reinforced metal matrix composite

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Embodiment 1

[0064] The substrate grade is 6092 SiC particle reinforced aluminum matrix (SiC p / Al) composite material, the particle size of the aluminum powder is 28 μm, the particle size of the SiC particle is 5 μm, the overall size of the composite material is 100×80×60 mm, and the measurement steps of the reinforcement SiC particle content are as follows:

[0065] (1) Preparation of comparison test block

[0066] (1.1) Production of composite blanks with different reinforcement contents

[0067] Using powder metallurgy technology, select aluminum powder with brand name 6092, particle size of 28 μm, and SiC particles with particle size of 5 μm, after accurate weighing, atomize powder, powder mixing, ball milling, drying, sieving, packaging Set, degassing, hot isostatic pressing and other processes to produce a set of SiC with SiC particle volume fractions of 10%, 15%, 20%, 25%, and 30%. p / Al composite blanks, the size of each blank is Φ80×80mm. Ensure that the manufacturing process ...

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Abstract

The invention relates to a non-destructive measurement method of a reinforcement content in a particle-reinforced metal matrix composite, and belongs to the technical field of non-destructive detection. According to the non-destructive measurement method provided by the invention, data collection is performed by using the water immersion automatic C scanning detection technology, so that the measurement precision is high, the repeatability is good, and the defects that the traditional contact method detection is low in automation degree and is susceptible to human factors are overcome; 100% detection of the surface of a detected object can be achieved, the detection result is intuitive and is stored easily, the reinforcement content at any position on the detected object can be measured, and the reinforcement distribution uniformity of different regions can also be directly observed on a two-dimensional color sound velocity imaging image. According to the non-destructive measurement method provided by the invention, the two-dimensional imaging of the sound velocity can be achieved by a conventional water immersion ultrasonic C scanning detection system in combination with simple data processing, so that the reinforcement content is measured, the detection system is not required to have a sound velocity imaging function, so that the requirements for the detection device are nothigh, the maneuverability is good, the measurement speed is good, the time is effectively shortened, and the economic cost is reduced.

Description

technical field [0001] The invention relates to a non-destructive measurement method for reinforcement content in a particle-reinforced metal matrix composite material, belonging to the technical field of non-destructive testing. Background technique [0002] As a new high-performance material, particle-reinforced metal matrix composites are more and more widely used in aerospace and other fields with the gradual maturity of production technology. Due to the characteristics of the powder metallurgy process, the performance of particle-reinforced metal matrix composites is greatly affected by the processing process, and defects such as holes, cracks, inclusions, and uneven distribution of reinforcing particles often appear inside the material, resulting in uneven structure and performance of the workpiece. Stress concentration and local plasticity will occur, and at the same time, it will affect the ductility and fracture toughness of the material. The particle agglomeration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/30G01N29/07
CPCG01N29/07G01N29/30
Inventor 杨平华何方成王晓史亦韦唐鹏钧
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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