QB
Henan Hanyin Optoelectronic technology Co., Ltd
Enterprise standard
Q/HYGD 0001-2023
Low volume silicon carbide particle reinforcement
Aluminum matrix composite billet
2022-10-10publish 2023-01-01put into effect
Henan Hanyin Optoelectronic technology Co., Ltd
Preface
Low-volume silicon carbide particle reinforced aluminum matrix composite billets have broad application prospects in the aerospace field. At present, there is no GJ standard or industry standard to follow. According to the requirements of standardization method, this standard is specially formulated to guide product design and acceptance.
This standard is prepared in accordance with GJB/T 6000-2001 Standard Preparation Rules.
This standard is proposed by Henan Hanyin Optoelectronic Technology Co., Ltd.
This standard is under the jurisdiction of Henan Hanyin Photoelectric Technology Co., Ltd.
This standard was drafted by Henan Hanyin Photoelectric Technology Co., Ltd.
Main drafters of this specification: Zhang Shuangyu, Yuan, Liu
This standard is issued for the first time.
Technical standard for aluminum matrix composite billets reinforced by low volume silicon carbide particles
1、 Scope
This standard specifies the requirements, quality assurance regulations, test methods, inspection rules, marking, packaging, transportation, storage and contract requirements of low volume SiCp/Al composite billets prepared by powder metallurgy technology.
This specification is applicable to 15% - 30% bulk silicon carbide particle reinforced aluminum matrix composite billets.
2、 Normative references
The clauses in the following documents become the clauses of this standard through the reference of this standard. For dated reference documents, all subsequent amendments (excluding corrigendum) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version is applicable to this standard.
GB/T 3190 Chemical Composition of Wrought Aluminum and Aluminum Alloys
GB/T 6987 Methods for Chemical Analysis of Aluminum and Aluminum Alloys
GB/T 3850-2015 Dense sintered metal materials and hardmetals Determination of density
GB/T 228.1-2010 Metallic materials Tensile test at room temperature
GB/T 5593 Structural Ceramic Materials for Electronic Components
GB/T 22315-2008 Test Method for Elastic Modulus and Poisson's Ratio of Metallic Materials
GB/T 4339-2008 Metallic Materials Determination of Thermal Expansion Characteristic Parameters
GB/T 22588-2008 Measurement of thermal diffusivity or thermal conductivity by flash method
GB/T 16865-2013 Wrought aluminium, magnesium and their alloy products - Tensile test specimens
GB/T 3246.2 Test Method for Macrostructure of Wrought Aluminum and Aluminum Alloy Products
GB/T 3246.1 Test Method for Microstructure of Wrought Aluminum and Aluminum Alloy Products
GB/T 3199-2007 Packaging, Marking, Transportation and Storage of Aluminum and Aluminum Alloy Processed Products
GB/T 17432-2012 Sampling Method for Chemical Composition Analysis of Wrought Aluminum and Aluminum Alloys
3、 Requirements
3.1 Material composition
The components and requirements of the materials used and the volume fraction of the components of SiCp/Al composite materials shall comply with the provisions in Table 1.
Table 1
Material grade | SiC Particle purity | Impurity content in aluminum alloy | SiC particle content | Matrix alloy content |
SiCp/Al-PD15 | ≥99% | ≤1% | 15±3% | allowance |
SiCp/Al-PD20 | ≥99% | ≤1% | 20±3% | allowance |
SiCp/Al-PD25 | ≥99% | ≤1% | 25±3% | allowance |
SiCp/Al-PD30 | ≥99% | ≤1% | 30±3% | allowance |
3.2 Marking
3.2.1 Marking method
The billet marking method shall be marked in sequence according to the product name, brand and status, billet number, delivery size and code of this standard.
3.2.2 Marking example
On July 1, 2023, quenched and artificially aged billets with a diameter of 1200 mm and a height of 600 mm were made of 6061 composite material containing 30% reinforced particles. Mark: PD30 composite billet PD30-T6 PD20230701 × one thousand and two hundred × 600 Q/HYGD 0001-2023
3.3 Chemical composition
The chemical composition of the base alloy shall comply with the provisions of GB/T3190.
3.4 Allowable size deviation
When signing the blank drawing, the allowable deviation of dimensions shall be marked on the drawing. For the measurable dimensions without deviation indicated in the drawing, the deviation can be determined through negotiation according to the requirements of the demander.
3.5 Density
The density of SiCp/Al composite billet shall meet the requirements of Table 2.
3.6 Performance
The properties of SiCp/Al composite billets shall meet the requirements of Table 2.
Table 2
Material grade | status | density g/cm3 | Elastic modulus GPa | Linear expansion coefficient 106/K | intensity MPa | Elongation % | Thermal conductivity W/m.k |
SiCp/Al-PD15 | O | ≤2.82 | 100±5 | 17.0±0.5 | 560 | allowance | 150±5 |
T6 |
SiCp/Al-PD20 | O | ≤2.84 | 110±5 | 16.0±0.5 | 580 | allowance | 160±5 |
T6 |
SiCp/Al-PD25 | O | ≤2.86 | 115±5 | 14.3±0.5 | 600 | allowance | 170±5 |
T6 |
SiCp/Al-PD30 | O | ≤2.88 | 125±5 | 13.0±0.5 | 560 | allowance | 175±5 |
T6 |
3.7 Macrostructure
Cracks, aluminum strips and non-metallic inclusions are not allowed on the low magnification test piece of SiCp/Al composite billet.
3.8 Microstructure
SiC in the microstructure of SiCp/Al composite ingot is uniformly distributed in the matrix, and large size holes (diameter more than 10) are not allowed μ m）。
3.9 Surface quality
3.9.1 The surface of SiCp/Al composite billet shall be free of cracks, corrosion spots and traces of nitrate.
3.9.2 The surface roughness and local mechanical damage on the surface of SiCp/Al composite billet with depth not exceeding 5% of the nominal size of the defect location are allowed, but the defect depth shall not exceed the machining allowance, and the total defect area shall not exceed 5% of the billet surface area.
4、 Test method
4.1 Chemical composition analysis method
The chemical composition analysis method of SiCp/Al composite billet shall be carried out according to the provisions of GB/T 6987.
4.2 Density
The analysis method for the density of SiCp/Al composite billet shall be in accordance with the provisions of GB/T 1423-1996.
4.3 Performance inspection method
The tensile strength test of SiCp/Al composite billet at room temperature shall be conducted according to the provisions of GB/T 228.1-2010.
The bending strength test of SiCp/Al composite billets at room temperature shall be conducted in accordance with the provisions of GB/T 5593.
The elastic modulus test of SiCp/Al composite billet shall be carried out according to the provisions of GB/T 22315-2008.
The linear expansion coefficient test of SiCp/Al composite billet shall be carried out according to the provisions of GB/T 4339-2008.
The selection and preparation of tensile specimen of SiCp/Al composite billet shall be in accordance with the provisions of GB/T16865.
The selection and preparation of bending strength specimens of SiCp/Al composite billets shall comply with the provisions of GB/T5593.
The selection and preparation of elastic modulus of SiCp/Al composite billet shall be in accordance with the provisions of GB/T 22315-2008.
The selection and preparation of the linear expansion coefficient of SiCp/Al composite billet shall be in accordance with the provisions of GB/T 4339-2008.
When SiCp/Al composite billets cannot be processed into standard samples, non-standard samples are allowed.
4.4 Macrostructure inspection method
The macrostructure of SiCp/Al composite billet shall be inspected according to the provisions of GB/T 3246.
4.5 Microstructure inspection method
The microstructure of SiCp/Al composite billet shall be inspected according to the provisions of GB/T 3246.
4.6 Dimension measurement method
SiCp/Al composite billet size accuracy shall not be less than 1mm.
4.7 Surface quality
The surface quality is measured by visual inspection, not by magnifying glass.
5、 Inspection rules
5.1 Inspection and acceptance
5.1.1 SiCp/Al composite billets shall be inspected by the technical supervision department of the supplier to ensure that the product quality conforms to the provisions of this standard (or order contract) and fill in the quality certificate.
5.1.2 The demander shall inspect the received products according to the provisions of this standard. If the inspection results are inconsistent with the provisions of this standard (or the order contract), it shall propose to the supplier according to the relevant provisions of GB/T 3199, and the supplier and the demander shall negotiate to deal with it. If arbitration is required, the sampling shall be carried out by the demander and the demander.
5.2 Batching
SiCp/Al composite billets shall be submitted for acceptance in batches. Each batch shall consist of the same alloy grade, state and specification, and the batch size is unlimited.
5.3 Inspection items
Each batch of SiCp/Al composite billets shall be inspected for appearance, dimensional deviation, density, mechanical properties, surface quality and macrostructure. The microstructure of quenched products shall be inspected.
5.4 Sampling
5.4.1 Sampling of chemical components shall comply with the provisions of GB/T 17432.
5.4.2 The density sampling shall comply with the provisions of GB/T 3850-2015.
5.4.3 Sampling of SiCp/Al composite billet properties
SiCp/Al composite billet performance samples shall be cut from the end face of the sampled billet, and each batch of billet shall be cut from only one billet. The sampling quantity of SiCp/Al composite billet performance shall be in accordance with Table 3.
5.4.4 Macroscopic tissue sampling
The macrostructure specimen of SiCp/Al composite billet shall be cut from the end face of the sampled billet, and each batch of billet shall be cut from only one billet. The number of macrostructure samples taken from SiCp/Al composite ingots shall be as specified in Table 3.
5.4.5 Microstructure sampling
For SiCp/Al composite billets delivered in T4 and T6 conditions, two microstructure samples shall be cut from each batch (heat treatment furnace).
5.5 Determination of inspection results
5.5.1 If the chemical composition, microstructure and density are unqualified, the whole batch is unqualified, and if the overall dimension and surface quality are unqualified, the single ingot is unqualified.
5.5.2 If any sample in the mechanical property test is unqualified, double quantity of samples (including the original unqualified blank) shall be taken from the batch of blank for repeated test. If the repeated tests are qualified, the batch shall be judged as qualified. If the repeated tests are still unqualified, the batch of blank shall be judged as unqualified, but the supplier is allowed to inspect one by one, and the qualified ones shall be delivered.
5.5.3 Re-inspection of unqualified macrostructure
If there are cracks and non-metallic inclusions in the macrostructure sample, the billet shall be scrapped. It is allowed to take another double number of samples from this batch of billets for repeated test. If the re-inspection is qualified, this batch of billets will be judged as qualified. If the re-inspection still has unqualified samples, this batch of billets will be unqualified or inspected by the supplier one by one, and the qualified ones will be delivered.
Table 3
Inspection items | Sampling location | Sampling quantity, pcs | Requirements chapter and article number | Inspection seal No |
Number of | Quantity of each sample |
chemical composition | See Note 1 | 1 per batch | 1 | 3.3 | 4.1 |
density | Anywhere | 1 per batch | 1 | 3.5 | 4.2 |
mechanical property |
| 1 per batch | 3 | 3.6 | 4.3 |
Elastic modulus | Anywhere | 1 per batch | 1 | 3.6 | 4.3 |
Linear expansion coefficient | Anywhere | 1 per batch | 1 | 3.6 | 4.3 |
Macrostructure | Anywhere | 1 per batch | 1 | 3.7 | 4.4 |
microscopic structure | Anywhere | 1 per batch | 1 | 3.8 | 4.5 |
Overall dimension deviation | Anywhere | sample | — | 3.4 | 4.6 |
Appearance organization | Anywhere | one by one | — | 3.9 | 4.7 |
Note 1: During chemical composition analysis, the supplier can take samples when the hot pressing is stable, and cut them from any part of the plate during re inspection or arbitration. |
6、 Marking, packaging, transportation and storage
6.1 Marks
6.1.1 Labels with the following marks shall be hung on each batch of inspected billets:
a) Inspection and seal of the supplier's technical supervision department;
b) Alloy grade;
c) Supply status;
d) Batch number.
6.1.2 The packing box mark of billet shall comply with the provisions of GB/T3199
6.2 Packaging, transportation and storage
The billet is not oiled and is packed into a packing box lined with one layer of moisture-proof paper or other moisture-proof materials and two layers of packaging foam or other anti-collision materials7. If the Demander requires anti-rust oil packaging or other requirements, it shall be indicated in the contract. Other requirements shall comply with the provisions of GB/T 3199-2007.
6.3 Quality certificate
Each batch of billets shall be attached with a quality certificate meeting the requirements of this standard, which shall indicate:
a) Supplier name:
b) Product name;
c) Alloy grade;
d) Supply status;
e) Specification;
f) Batch number;
g) Number of net weight pieces;
h) The analysis and inspection results and the seal of the technical supervision department;
i) The standard number;
j) Ex-factory date (or packaging date).
7、 Content of order contract
The ordering contract for the products listed in this standard shall include the following contents:
a) Product name;
b) Alloy grade:
c) Material status;
d) Specification;
e) Allowable size deviation (if not indicated, supply at a lower level);
f) Weight;
g) The standard number;
h) Other requirements.