Unlock instant, AI-driven research and patent intelligence for your innovation.

A high-strength heat-resistant aluminum alloy material for engine pistons and its preparation method

An aluminum alloy material and engine technology, applied in the field of high-strength heat-resistant aluminum alloy piston material and its preparation, and heat-resistant aluminum alloy for automobile engine piston, can solve problems such as unfavorable mechanical properties and segregation, and achieve improved fluidity and charging capacity. The effect of type ability

Active Publication Date: 2020-02-04
SHANGHAI JIAOTONG UNIV +1
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Zr is prone to severe segregation in Al, forming a non-segregation zone, which has an adverse effect on the mechanical properties.

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 more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The high-strength heat-resistant aluminum alloy material that is used for engine piston in the present embodiment is made up of the element of following percentage by weight: Zr 0.2%, Y8%, Fe0.5%, Mg0.1%, Si0.8%, Ti0 .05%, B0.01%, the rest is Al.

[0041] The high-strength heat-resistant aluminum alloy material for the engine piston of the above-mentioned composition comprises the following steps:

[0042] Select Al99.7% industrial pure aluminum and place it in a smelting furnace to melt into molten aluminum, and raise the temperature of the molten aluminum to 720°C to 750°C;

[0043] According to the formula Zr 0.2%, Y8%, Fe0.5%, Mg0.1%, Si0.8%, Ti0.05%, B0.01%, respectively weigh the master alloy and put it into the molten aluminum; after standing for 30 minutes, Fully stir the molten aluminum with a graphite rod to make the composition uniform;

[0044] The temperature of the molten aluminum is controlled at about 730°C, and the melt is refined with high-purity arg...

Embodiment 2

[0048] The high-strength heat-resistant aluminum alloy material used for engine pistons in this embodiment is composed of the following elements in weight percentage: Zr 0.4%, Y10%, Fe1%, Mg0.2%, Si1%, Ti0.06%, B0.012%, the rest is Al.

[0049] The high-strength heat-resistant aluminum alloy material for the engine piston of the above-mentioned composition comprises the following steps:

[0050] Select Al99.7% industrial pure aluminum and place it in a smelting furnace to melt into molten aluminum, and raise the temperature of the molten aluminum to 720°C to 750°C;

[0051] According to the formula Zr 0.4%, Y10%, Fe1%, Mg0.2%, Si1%, Ti0.06%, B0.012%, respectively weigh the master alloy and put it into the aluminum liquid; after standing for 30 minutes, fully Stir the molten aluminum to make the ingredients uniform;

[0052] The temperature of the molten aluminum is controlled at about 730°C, and the melt is refined with high-purity argon to remove slag and degas to obtain al...

Embodiment 3

[0056] The high-strength heat-resistant aluminum alloy material used for engine pistons in this embodiment consists of the following elements in percentage by weight: Zr0.6%, Y13%, Fe3%, Mg0.3%, Si2%, Ti0.08 %, B0.016%, and the rest is Al.

[0057] The high-strength heat-resistant aluminum alloy material for the engine piston of the above-mentioned composition comprises the following steps:

[0058] Select Al99.7% industrial pure aluminum and place it in a smelting furnace to melt it into molten aluminum, and raise the temperature of the molten aluminum to 720-750°C;

[0059] According to the formula Zr0.6%, Y13%, Fe 3%, Mg0.3%, Si2%, Ti0.08%, B0.016%, respectively weigh the master alloy and put it into the aluminum liquid; after standing for 30 minutes, use graphite Stir the liquid aluminum fully with the rod to make the ingredients uniform;

[0060] The temperature of the molten aluminum is controlled at about 730°C, and the melt is refined with high-purity argon to remove...

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

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a high-strength heat-resisting aluminum alloy material for an engine piston. The high-strength heat-resisting aluminum alloy material is composed of elements which comprise, byweight percent, 0.2%-2% of Zr, 6%-13% of Y, 0.5%-3% of Fe, 0.8%-2% of Si, 0.1%-0.3% of Mg, 0.05%-0.08% of Ti, 0.01%-0.15% of B and the balance Al. The invention further provides a preparation method of the high-strength heat-resisting aluminum alloy material for the engine piston. A heat-resisting aluminum alloy has good casting performance and mechanical performance, and the strength of extensionreaches 330 MPa. The material further has good heat resistance, and the heat-resisting experiment shows that after heating is carried out for 1 h under the temperature being 280 DEG C, strength is increased instead of decrease; and after heating is carried out for 1 h under the temperature being 400 DEG C, the strength keeps unchanged.

Description

technical field [0001] The invention relates to a heat-resistant aluminum alloy for automobile engine pistons, in particular to a high-strength heat-resistant aluminum alloy piston material and a preparation method thereof, belonging to the field of automobile engine manufacturing. Background technique [0002] Aluminum alloy has excellent characteristics such as low density, high specific strength, good elasticity, good impact resistance, corrosion resistance, high thermal conductivity, easy surface coloring, and recyclability. It is widely used in aerospace, transportation, energy and power industries. Especially in the automobile industry, with the development of automobile lightweight technology, replacing traditional cast iron parts in automobiles with high-performance aluminum alloys is the main means of automobile lightweight. The working temperature of automobile engine pistons is generally required to be above 230°C, and must have good impact toughness and fatigue p...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03C22F1/04
CPCC22C1/026C22C1/03C22C21/00C22F1/04
Inventor 高海燕王朦朦王俊尤伟任顾孙望李敏张驰
Owner SHANGHAI JIAOTONG UNIV