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Preparation method and application of aluminum alloy sample

A sample preparation and aluminum alloy technology, applied in the field of aluminum alloy inspection, can solve the problems of sample loading deflection, unfavorable inspection, failure to obtain fracture oxide film inspection plane, etc., to avoid lateral deflection and realize the effect of loading force constraint

Pending Publication Date: 2022-06-28
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, when the thickness of the plate and strip product is less than 25mm, due to the limitation of the product thickness, the sample loading deflection is very easy to occur during the split test, and the effective split of the sample cannot be realized, and the effective inspection plane of the fracture oxide film cannot be obtained. It is not conducive to the inspection of low-magnification fracture oxide film of aluminum alloy plate and strip products

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  • Preparation method and application of aluminum alloy sample
  • Preparation method and application of aluminum alloy sample
  • Preparation method and application of aluminum alloy sample

Examples

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preparation example Construction

[0033] According to the preparation method of an aluminum alloy sample 7 according to the first aspect of the embodiment of the present invention, please refer to the appendix figure 2 shown, including the following steps:

[0034] Step 1: The aluminum alloy plate and strip product is prepared by machining into an aluminum alloy test blank 5 that meets the size required for fracture inspection;

[0035] Step 2: Using a sheet and strip product with a thickness specification greater than that of the aluminum alloy test sample to prepare a cladding sample blank 6 that meets the size required for fracture inspection by machining;

[0036] Step 3: According to the outline size of the aluminum alloy test sample, a full-thickness through groove is axially centered in the thickness direction of the clad sample blank 6, and the aluminum alloy test blank 5 is pressed into the through the groove;

[0037] Step 4: Planing the aluminum alloy test blank 5 near the through groove and at t...

Embodiment 1

[0049] Test material: 20mm thickness specification 2050 aluminum-lithium alloy thick plate

[0050] Experimental process: 2050 aluminum-lithium alloy thick plate low-magnification fracture inspection sample processing, other aluminum alloy plate and strip low-magnification fracture inspection sample preparation and assembly hole processing, fracture inspection and splitting test, the specific implementation steps are as follows:

[0051] Step 1, according to the GB / T3246.2 standard, a typical specification 2050 aluminum-lithium alloy thick plate with a thickness of 20mm is processed into an aluminum alloy test blank 5 with a size of 20mm×45mm×120mm;

[0052] Step 2, using a 2050 aluminum-lithium alloy thick plate with a typical specification of 60mm in thickness, and also processing the plate and strip into a cladding sample 6 with a size of 60mm×45mm×160mm according to the GB / T3246.2 standard;

[0053] In step 3, a full-thickness through-groove is axially centered on the clad...

Embodiment 2

[0056] Test material: 2xxx series or other grades of aluminum alloy

[0057] In step 1, use 2xxx series or other grades of aluminum alloy thick plate with a thickness of less than 25mm, and also process the plate and strip into a size of 45mm × 80mm ( Aluminum alloy test blank 5 with constant thickness);

[0058] In step 2, a thick plate of 2xxx series or other grades of aluminum alloy with a typical thickness of 60mm is used, and the plate and strip are processed into a size of 60mm × 45mm according to the method specified in the standard GB / T3246.2 medium and low magnification fracture splitting test. ×80mm cladding sample 6;

[0059] Step 3: A full-thickness through-groove is axially centered on the cladding sample blank 6, and the slot size is consistent with the external dimension of the aluminum alloy test blank 5. The aluminum alloy test blank 5 is pressed into the through-groove of the cladding sample blank 6 to realize The aluminum alloy sample 7 is obtained by effe...

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Abstract

The invention relates to a preparation method and application of an aluminum alloy sample. The preparation method of the aluminum alloy sample comprises the following steps: machining an aluminum alloy plate strip product to prepare an aluminum alloy test blank meeting the size required by fracture inspection; machining a plate strip product of which the thickness specification is greater than that of the aluminum alloy test sample to prepare a coated sample blank of which the size meets the fracture inspection requirement; according to the overall dimension of the aluminum alloy test sample, a full-thickness through groove is axially formed in the middle of the coating sample blank in the thickness direction, and the aluminum alloy test blank is pressed into the through groove; the side, close to the penetrating groove, of the aluminum alloy test blank and located in the thickness center are subjected to opening planing, and the aluminum alloy sample is obtained; pressure is applied to the planing opening for a splitting test. According to the coating sample blank, loading force constraint can be effectively achieved, and pressure loading lateral deflection of the aluminum alloy test blank is avoided.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy inspection, in particular to a preparation method and application of an aluminum alloy sample. Background technique [0002] The low-magnification fracture oxide film inspection is an important part of the re-inspection of deformed aluminum and aluminum alloy products. It usually adopts GB / T3246.2 "Microstructure Inspection Method of Deformed Aluminum and Aluminum Alloy Products Part 2: Low-Magnification Inspection Method" It is used to inspect and judge whether there are various defects in the structure of alloy ingots and various products (plates and strips, extruded products, forgings), and is an important structure inspection method that can meet the requirements of relevant parties. [0003] For alloy ingots, strips, extruded products, forgings, etc., the fracture oxide film inspection is usually carried out by breaking or splitting. Different types of products have different sampling...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N3/02G01N3/08
CPCG01N1/28G01N3/02G01N3/08
Inventor 马晓光李海涛蔡彦岑韩宝帅姚勇徐严谨
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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