AHS aluminum alloy spectral standard sample and detection method of AHS aluminum alloy component

A spectral standard sample and standard sample technology, applied in the field of AHS aluminum alloy spectral standard sample and AHS aluminum alloy composition detection, to achieve the effect of improving production efficiency and product quality

Inactive Publication Date: 2015-03-25
SOUTHWEST ALUMINUM GRP
7 Cites 1 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Since the spectral standard sample needs to meet the requirements of composition accuracy, and there is no suitable standard sample in the existing standard samples corresponding to...
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Abstract

The invention belongs to the field of alloys, and particularly relates to an AHS aluminum alloy spectral standard sample and a detection method of an AHS aluminum alloy component. The AHS aluminum alloy spectral standard sample provided by the invention comprises the following raw materials in percentage by weight: 10.6wt%-11.5wt% of Si, 0.1wt%-0.3wt% of Fe, 2.4-2.5wt% of Cu, 0.01wt%-0.05wt% of Mn, 0.3wt%-0.5wt% of Mg, 0.01wt-0.02wt% of Ni, 0.01wt%-0.03wt% of Zn, 0.03wt%-0.05wt% of Ti, 0.015wt%-0.05wt% of Sr and the balance of Al. A to-be-detected AHS aluminum alloy sample is subjected to component analysis by adopting a standard spectral line intensity curve of an atomic emission spectroscopy corrected by the AHS aluminum alloy standard sample provided by the invention, and the result accords with the result of component analysis employing a chemical analysis method.

Application Domain

Technology Topic

Standard samplesAtomic absorption spectroscopy +7

Image

  • AHS aluminum alloy spectral standard sample and detection method of AHS aluminum alloy component
  • AHS aluminum alloy spectral standard sample and detection method of AHS aluminum alloy component
  • AHS aluminum alloy spectral standard sample and detection method of AHS aluminum alloy component

Examples

  • Experimental program(6)

Example Embodiment

[0077] Example 1
[0078] Pure aluminum, Al-20wt% Si master alloy, Al-15wt% Fe master alloy, Al-40wt% Cu master alloy, Al-15wt% Mn master alloy, Al-20wt% Ni master alloy and The Al-20wt% Ti master alloy was added into the furnace, and melted and blended at 760° C. to obtain the first alloy melt. Add pure zinc into the first alloy melt according to the composition percentage in Table 1, and stir to obtain the second alloy melt. Add pure magnesium into the second alloy solution according to the composition ratio in Table 1, and stir to obtain the third alloy melt. Add Al-10wt% Sr master alloy to the third alloy solution according to the composition ratio in Table 1 to obtain aluminum alloy melt. Under stirring conditions, hot-top casting is used to cast the aluminum alloy melt. The casting temperature is 735°C, the casting speed is 78mm/min, and the cooling water pressure is 0.06MPa. After the casting, an aluminum alloy with a diameter of 162mm is obtained. Alloy ingots and rods.
[0079] The chemical composition mass percent of AHS aluminum alloy spectrum standard sample in table 1 embodiment 1
[0080]
[0081] The metallographic structure and composition segregation inspection of the above-mentioned aluminum alloy cast ingots and bars is carried out. The specific process is as follows:
[0082] First, the aluminum alloy cast ingot bar is skinned, and the thickness of the skin is 5 mm. Then, follow figure 1 The part shown is cut from the inspection test piece, figure 1 Schematic diagram of sampling locations of metallographic test pieces and segregation test pieces of aluminum alloy ingots provided by the present invention, wherein L=120-220mm, 1 and 4 are the cutting positions of the metallographic test pieces, and 2 and 3 are components The cutting part of the segregation test piece. according to figure 2 Sampling in the manner shown is to carry out spectral analysis on the composition segregation test piece, figure 2 It is a schematic diagram of the location of the points for the inspection of the composition segregation of the ingot provided by the present invention. Among them, five sets of data from A1 to A5 are taken from the center to the edge of each test piece.
[0083] Metallographic high-magnification and low-magnification inspections were carried out on No. 1 and No. 4 test pieces. The results showed that the test pieces had fine and uniform structures, no pores, inclusions and other metallurgical defects. Among them, the metallographic low-magnification photos of No. 1 test piece are as follows: image 3 as shown, image 3 It is a metallographic low-magnification photo of the aluminum alloy ingot test piece provided in Example 1 of the present invention.
[0084] Carry out radial component segregation test and longitudinal component segregation test to No. 2 and No. 3 test pieces, wherein, described radial component segregation test adopts DARVID (DARVID) test, specifically:
[0085] If R/S>dα.n, there is segregation in the radial direction
[0086] If R/S≤dα.n, there is no radial segregation
[0087] In the formula, R is extreme difference, S is standard deviation, and dα.n is a statistical constant related to α.n (dα.n=2.753 in this embodiment).
[0088] The longitudinal component segregation test adopts t test, specifically:
[0089] if t 0t α·ν , then there is segregation in the longitudinal direction; if t 0 ≤t α·ν , then there is no longitudinal segregation.
[0090] In the formula: is the average value of the two test pieces, n is the number of points (n=5), S 1 , S 2 is the standard deviation of the two test pieces, t α·ν A statistical constant (t in this embodiment) determined by α·ν=n-1 α·ν Take 2.306).
[0091] Test results show that No. 2 and No. 3 test pieces have no segregation in the radial direction and longitudinal direction.
[0092] After the metallographic structure inspection and composition segregation inspection of aluminum alloy ingots and rods pass the inspection, the aluminum alloy ingots and rods are subjected to homogenization heat treatment. , and cooled to room temperature to obtain a homogenized alloy ingot.
[0093] Extrude the homogenized alloy ingot in a 2000-ton hydraulic extruder at a temperature of 430°C and an extrusion speed of 3mm/s to obtain a rod with a diameter of 55mm. The material is sawed and cut into a small cylinder of ф55×35mm, which is the AHS aluminum alloy spectral standard sample. The obtained standard samples are marked, and the surface is turned and milled to be smooth and stored in the warehouse.

Example Embodiment

[0094] Example 2
[0095] Pure aluminum, Al-20wt% Si master alloy, Al-15wt% Fe master alloy, Al-40wt% Cu master alloy, Al-15wt% Mn master alloy, Al-20wt% Ni master alloy and The Al-20wt% Ti master alloy was added into the furnace, and melted and blended at 760° C. to obtain the first alloy melt. Add pure zinc into the first alloy melt according to the composition percentage in Table 1, and stir to obtain the second alloy melt. Add pure magnesium into the second alloy solution according to the composition ratio in Table 1, and stir to obtain the third alloy melt. Add Al-10wt% Sr master alloy to the third alloy solution according to the composition ratio in Table 1 to obtain aluminum alloy melt. Under stirring conditions, hot-top casting is used to cast the aluminum alloy melt. The casting temperature is 745°C, the casting speed is 72mm/min, and the cooling water pressure is 0.08MPa. After the casting, an aluminum alloy with a diameter of 162mm is obtained. Alloy ingots and rods.
[0096] The chemical composition mass percentage of AHS aluminum alloy spectrum standard sample in table 2 embodiment 2
[0097]
[0098] The metallographic structure and composition segregation inspection of the above-mentioned aluminum alloy cast ingots and bars is carried out. The specific process is as follows:
[0099] First, the aluminum alloy cast ingot bar is skinned, and the thickness of the skin is 5mm. Then, follow figure 1 The part shown is cut from the inspection test piece, figure 1 Schematic diagram of sampling locations of metallographic test pieces and segregation test pieces of aluminum alloy ingots provided by the present invention, wherein L=120-220mm, 1 and 4 are the cutting positions of the metallographic test pieces, and 2 and 3 are components The cutting part of the segregation test piece.
[0100] Metallographic high-magnification and low-magnification inspections were carried out on No. 1 and No. 4 test pieces, and the results showed that the test pieces had a fine and uniform structure and no metallurgical defects such as pores and inclusions.
[0101] according to figure 2 Spectral analysis is performed on the composition segregation test piece at the points shown. figure 2 It is a schematic diagram of the location of the points for the inspection of the composition segregation of the ingot provided by the present invention. Among them, five sets of data from A1 to A5 are taken from the center to the edge of each test piece. The size of the difference in composition of the five sets of data for each test piece indicates the degree of radial component segregation of the ingot, and the size of the difference between the data of the five points corresponding to No. 2 and No. 3 test pieces indicates the degree of longitudinal component segregation of the ingot .
[0102] The radial component segregation test adopts Davit (DARVID) test, specifically:
[0103] If R/S>dα.n, there is segregation in the radial direction
[0104] If R/S≤dα.n, there is no radial segregation
[0105] In the formula, R is extreme difference, S is standard deviation, and dα.n is a statistical constant related to α.n (dα.n=2.753 in this embodiment).
[0106] The longitudinal component segregation test adopts t test, specifically:
[0107] if t 0t α·ν , then there is segregation in the longitudinal direction; if t 0 ≤t α·ν , then there is no longitudinal segregation.
[0108] In the formula: is the average value of the two test pieces, n is the number of points (n=5), S 1 , S 2 is the standard deviation of the two test pieces, t α·ν A statistical constant (t in this embodiment) determined by α·ν=n-1 α·ν Take 2.306).
[0109] Test results show that No. 2 and No. 3 test pieces have no segregation in the radial direction and longitudinal direction.
[0110] After the metallographic structure inspection and component segregation inspection of aluminum alloy ingots and rods pass the inspection, the aluminum alloy ingots and rods are subjected to homogenization heat treatment. , and cooled to room temperature to obtain a homogenized alloy ingot.
[0111] Extrude the homogenized alloy ingot in a 2000-ton hydraulic extruder at a temperature of 430°C and an extrusion speed of 5mm/s to obtain a rod with a diameter of 55mm. The material is sawed and cut into a small cylinder of ф55×35mm, which is the AHS aluminum alloy spectral standard sample. The obtained standard samples are marked, and the surface is turned and milled to be smooth and stored in the warehouse.

Example Embodiment

[0112] Example 3
[0113] Pure aluminum, Al-20wt% Si master alloy, Al-15wt% Fe master alloy, Al-40wt% Cu master alloy, Al-15wt% Mn master alloy, Al-20wt% Ni master alloy and The Al-20wt% Ti master alloy was added into the furnace, and melted and blended at 760° C. to obtain the first alloy melt. Add pure zinc into the first alloy melt according to the composition percentage in Table 1, and stir to obtain the second alloy melt. Add pure magnesium into the second alloy solution according to the composition ratio in Table 1, and stir to obtain the third alloy melt. Add Al-10wt% Sr master alloy to the third alloy solution according to the composition ratio in Table 1 to obtain aluminum alloy melt. Under stirring conditions, hot-top casting is used to cast the aluminum alloy melt. The casting temperature is 740°C, the casting speed is 76mm/min, and the cooling water pressure is 0.07MPa. After the casting, an aluminum alloy with a diameter of 162mm is obtained. Alloy ingots and rods.
[0114] The chemical composition mass percent of AHS aluminum alloy spectrum standard sample in table 3 embodiment 3
[0115]
[0116] The metallographic structure and composition segregation inspection of the above-mentioned aluminum alloy cast ingots and bars is carried out. The specific process is as follows:
[0117] First, the aluminum alloy cast ingot bar is skinned, and the thickness of the skin is 5 mm. Then, follow figure 1 The part shown is cut from the inspection test piece, figure 1 Schematic diagram of sampling locations of metallographic test pieces and segregation test pieces of aluminum alloy ingots provided by the present invention, wherein L=120-220mm, 1 and 4 are the cutting positions of the metallographic test pieces, and 2 and 3 are components The cutting part of the segregation test piece.
[0118] Metallographic high-magnification and low-magnification inspections were carried out on No. 1 and No. 4 test pieces, and the results showed that the test pieces had a fine and uniform structure and no metallurgical defects such as pores and inclusions.
[0119] according to figure 2 Spectral analysis is performed on the composition segregation test piece at the points shown. figure 2 It is a schematic diagram of the location of the points for the inspection of the composition segregation of the ingot provided by the present invention. Among them, five sets of data from A1 to A5 are taken from the center to the edge of each test piece. The size of the difference in composition of the five sets of data for each test piece indicates the degree of radial component segregation of the ingot, and the size of the difference between the data of the five points corresponding to No. 2 and No. 3 test pieces indicates the degree of longitudinal component segregation of the ingot .
[0120] The radial component segregation test adopts Davit (DARVID) test, specifically:
[0121] If R/S>dα.n, there is segregation in the radial direction
[0122] If R/S≤dα.n, there is no radial segregation
[0123] In the formula, R is extreme difference, S is standard deviation, and dα.n is a statistical constant related to α.n (dα.n=2.753 in this embodiment).
[0124] The longitudinal component segregation test adopts t test, specifically:
[0125] if t 0t α·ν , then there is segregation in the longitudinal direction; if t 0 ≤t α·ν , then there is no longitudinal segregation.
[0126] In the formula: is the average value of the two test pieces, n is the number of points (n=5), S 1 , S 2 is the standard deviation of the two test pieces, t α·ν A statistical constant (t in this embodiment) determined by α·ν=n-1 α·ν Take 2.306).
[0127] Test results show that No. 2 and No. 3 test pieces have no segregation in the radial direction and longitudinal direction.
[0128] After the metallographic structure inspection and component segregation inspection of aluminum alloy ingots and rods pass the inspection, the aluminum alloy ingots and rods are subjected to homogenization heat treatment. , and cooled to room temperature to obtain a homogenized alloy ingot.
[0129] Extrude the homogenized alloy ingot in a 2,000-ton hydraulic extruder at a temperature of 430°C and an extrusion speed of 4mm/s to obtain a rod with a diameter of 55mm. The material is sawed and cut into a small cylinder of ф55×35mm, which is the AHS aluminum alloy spectral standard sample. The obtained standard samples are marked, and the surface is turned and milled to be smooth and stored in the warehouse.
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PUM

PropertyMeasurementUnit
Diameter55.0 ~ 60.0mm
Diameter55.0mm
Thickness5.0mm
tensileMPa
Particle sizePa
strength10

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