High-strength high-toughness corrosion-resistant Al-Cu-Mg aluminum alloy
An al-cu-mg, aluminum alloy technology, applied in the field of new high-strength and high-toughness Al-Cu-Mg aluminum alloy, can solve the problems of poor comprehensive performance, poor fracture toughness, poor toughness, etc.
Inactive Publication Date: 2012-08-15
CENT SOUTH UNIV
View PDF3 Cites 19 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, most of the Al-Cu-Mg series aluminum alloys have high Cu content (>4.0%) as the main element (such as 2x24 aluminum alloy) or low Mg content (<1.0%) (such as 2022 aluminum alloy). Poor, low strength or poor toughness
For example, the T6 tensile strength of 2022 aluminum alloy is only 435MPa, and the tearing UIE (unit crack nucleation work) is only 100N·M -1 , poor fracture toughness
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] The following examples are intended to further illustrate the present invention, rather than limit the present invention.
[0025] In each embodiment, the mass fraction of impurities Si is less than 0.2%, Fe is less than 0.25%, the alloy element Zn is less than 0.2%, Ti is less than 0.06%, and Mn is less than 1.2%. Table 1, Table 2, Table 3, and Table 4 show the weight percent content of alloying elements, preparation methods, room temperature tensile properties, toughness, and corrosion resistance of the examples.
[0026] Table 1
[0027]
[0028]
[0029] Table 2
[0030]
[0031] table 3
[0032]
[0033] Table 4
[0034]
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a high-strength high-toughness corrosion-resistant Al-Cu-Mg serial aluminum alloy. The key point is to regulate the mass ratio of the elements in the Al-Cu-Mg alloy. The high-strength high-toughness corrosion-resistant Al-Cu-Mg aluminum alloy comprises the following components in percentage by weight: 3.0-4.0% of copper, 0.5-1.5% of magnesium, less than 0.2% of zinc, less than 0.06% of titanium, less than 0.2% of silicon, less than 0.25% of iron, less than 1.2% of manganese and the balance of aluminum. The novel aluminum alloy provided by the invention has the advantages of higher strength, better plasticity, favorable exfoliation corrosion resistance and favorable fracture toughness. The strength of the material (component) prepared from the alloy after peak aging is greater than 480Mpa, the elongation percentage of the material at room temperature is not lower than 10%, the Vickers hardness number is not lower than 140HV, the exfoliation corrosion resistance is within the EB range, and the comprehensive properties are apparently higher than those of the reported Al-Cu-Mg serial aluminum alloy.
Description
technical field [0001] The invention relates to a novel high-strength and high-toughness Al-Cu-Mg aluminum alloy, the alloy can meet the peak aging strength of 480MPa, and the crack nucleation work per unit area (UIE) value is greater than 150N·M -1 . Non-ferrous metal materials and their processing fields. Background technique [0002] In order to achieve the purpose of saving energy, reducing weight and increasing efficiency, the demand for new high-performance lightweight materials in the manufacturing industry is growing rapidly. As a structural material for large aerospace parts, aluminum alloys play a vital role in reducing the quality of aviation components. Therefore It has received more and more attention, especially the heat treatable strengthening of Al-Cu-Mg series aluminum alloys. Al-Cu-Mg series aluminum alloys are used as large aircraft structural materials. The adjustment of the chemical composition of the main alloy elements is closely related to the micro...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C22C21/12
Inventor 邓运来杨金龙李思宇陈泽宇叶凌英万里张新明
Owner CENT SOUTH UNIV
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
