Heat-resistant high-strength aluminum alloy series new materials

Aluminum alloy is one of the key materials of transportation, defense industries and high-end manufacturing, and is one of the key materials of green sustainable development. However, the strength of the aluminum alloy has a sharp decrease with the operating temperature, and the strength of the tensile strength of 350 ° C is only about 25% room temperature, and the traditional Al-Si system, Al-Cu system and Al-Fe-TM-Si-resistant aluminum Alloys are difficult to meet future engines such as serving the components in demanding environments on lightly high heat-resistant materials. Therefore, the heat resistance of aluminum alloy needs to be broken.

In response to the bottleneck, Shandong University proposed nano-seedling technology, breaking through the bottleneck, invented the new generation of heat-resistant high-strength aluminum alloy new materials.

Implementation Effect

Heat-resistant super high aluminum alloy new material

The heat-resistant super high aluminum alloy new material is detected by the national non-ferrous metals and electronic material analysis test center, and the tensile strength of 350 ° C and 500 ° C is 506 MPa, 217 MPa and 96 MPa (Fig. 7-1), 700 ° C. The compressive strength can still be maintained at 31.76 MPa.

Figure 7-1 Heat-resistant ultra high strength aluminum alloy new material properties: (a) room temperature stretching performance; (b) 350 ° C tensile properties; (c) 500 ° C tensile properties

Heat resistant high-strength high modulus aluminum alloy new material

The heat-resistant high-strength high-modulus aluminum alloy new material is 300 ° C for 258 MPa, and the room temperature compressive strength is 2.163 GPa; the material elastic modulus is particularly protruding, up to 174.6GPa, and conventional heat-resistant aluminum elastic modulus Below 80GPa, as shown in Figure 7-2.

Figure 7-2 Heat-resistant high-strength high modulus aluminum alloy new material properties: (a) 350 ° C tensile properties; (b) elastic modulus test; (c) pressure resistance performance test

Figure 7-3 lists several heat-resistant high-strength aluminum alloy new materials: (a) Figure is a new heat-resistant high-strength aluminum alloy new material to the piston head to meet the high power density engine on heat resistance, wear resistance , Demanding requirements such as anti-fatigue performance; (b) is a pipe material extruded by heat-resistant high-strength aluminum alloy, which can meet the needs of mechanical performance after long-term thermal exposure under deep well high temperature environment; (c) for use The mixing device made of heat-resistant high-strength aluminum alloy can serve in the aluminum water above 850 ° C or higher without creep.

Figure 7-3 Heat-resistant high-strength aluminum alloy new material products

Product advantages

The high-temperature mechanical properties of new materials have protected from 350 ° C to 210 MPa, 500 ° C reached 96 MPa.

The new material has excellent thermal stability, serving in a high temperature environment (> 350 ° C), and the mechanical properties do not recession.

The new material has good processing forming properties.

Product specifications

The heat-resistant high-strength aluminum alloy series new material can be made into a ingot, a blank, a rod, and the like, and can be combined with a process such as casting, forging, rotating, welding.

Application field

Modern automobile traffic, oil and gas mining, marine ship power equipment, heavy-duty armor weapons, advanced aerial vehicles and other parts and related high thermal needs of components manufacturing.