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Determination method of sensitivity grade of intergranular corrosion of 5083 alloy sheet materials

A technology of alloy plate and intergranular corrosion, which is applied in the field of metallography, can solve the problems of long sample preparation and detection cycle, and achieve the effect of shortening the judgment cycle

Inactive Publication Date: 2016-05-04
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the judgment of intergranular corrosion sensitivity level of 5083 alloy plate needs to prepare standard samples for testing, and the sample preparation and testing cycle is long

Method used

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  • Determination method of sensitivity grade of intergranular corrosion of 5083 alloy sheet materials
  • Determination method of sensitivity grade of intergranular corrosion of 5083 alloy sheet materials
  • Determination method of sensitivity grade of intergranular corrosion of 5083 alloy sheet materials

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Embodiment 1

[0029] see figure 1 , is a schematic flow chart of the method for judging the intergranular corrosion sensitivity level of 5083 alloy plate provided by the present invention.

[0030] The invention provides a method for judging the intergranular corrosion sensitivity level of a 5083 alloy plate, comprising the following steps:

[0031] Step S1: collecting a plurality of first samples, and classifying the first samples according to the mass loss per unit area after performing intergranular corrosion detection on the collected first samples;

[0032] Collect a number of first samples of 5083 alloy plates with different specifications and different states. After intergranular corrosion detection is performed on the collected first samples, the first samples are classified according to the quality loss; it should be noted that the classification The grade is to evaluate the mass loss level of the first sample by the mass loss per unit area, and then determine the intergranular co...

Embodiment 2

[0039] In yet another embodiment provided by the present invention, the method for judging the intergranular corrosion sensitivity level of the 5083 alloy plate in this embodiment is similar to the method for judging the intergranular corrosion sensitivity level of the 5083 alloy plate in Embodiment 1, and the same points are No more details, just the differences.

[0040] In this embodiment, the method for judging the intergranular corrosion sensitivity level of 5083 alloy plate includes the following steps:

[0041] Step S10: Obtain a first sample from a rolling factory.

[0042] The calendering plant obtained 5083 alloy plate samples.

[0043] Step S20: collecting a plurality of first samples, and classifying the first samples according to the mass loss per unit area after performing intergranular corrosion detection on the collected first samples;

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Abstract

The present invention discloses a determination method of sensitivity grade of intergranular corrosion of 5083 alloy sheet materials, and the method comprises the following steps: step A, collecting first samples of a plurality of 5083 alloy sheet materials, detecting intergranular corrosion of the first samples, and grading the first samples according to mass loss per unit area; step B, collecting second samples of a plurality of 5083 alloy sheet materials, sensitizing the second samples and detecting intergranular corrosion of the second samples, and grading the second samples according to mass loss per unit area; step C, under a metallographic microscope, observing microscopic structures of the first samples subjected to the step A and the second samples subjected to the step B to obtain metallographic maps; and step D, under the metallographic microscope, respectively observing the microstructures of the plurality of 5083 alloy sheet materials to be tested, comparing with the metallographic maps obtained by the step C, and determining the sensitivity grade of the intergranular corrosion of the plurality of 5083 alloy sheet materials to be tested. The testing cycle can be shortened by use of the metallographic maps.

Description

technical field [0001] The invention relates to the technical field of metallography, in particular to a method for judging the intergranular corrosion sensitivity level of a 5083 alloy plate. Background technique [0002] 5xxx series alloy is a non-heat treatment strengthened alloy with medium strength, excellent corrosion resistance and weldability. This type of alloy not only has excellent resistance to general corrosion in seawater and marine atmospheric conditions, but also resists intergranular corrosion. The performance is better. The 5083 alloy has comprehensive properties such as suitable strength, corrosion resistance and manufacturability, so it is most widely used in ships. [0003] At present, the judgment of intergranular corrosion sensitivity level of 5083 alloy plate needs to prepare standard samples for testing, and the sample preparation and testing cycle is long. [0004] Therefore, how to shorten the intergranular corrosion sensitivity detection cycle o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00G01N5/04
CPCG01N17/006G01N5/04
Inventor 冯旺温庆红林林
Owner SOUTHWEST ALUMINUM GRP
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