In its composition, this composite material has some advantages and can be used as a material for the pistons of high-speed engines.

ElementContent (%)

Aluminum,Al85

Silicon, Si12.20

Magnesium, Mg1.0

Copper , Cu0.90

Nickel, Ni0.9

АК10М2Н for ingots made from primary metals, scrap and waste of non-ferrous metals and alloys, and intended for the production of engine pistons.

Известен жаропрочный деформируемый сплав на основе алюминия АК4-1, применяемый также для изготовления деталей поршневых двигателей, содержащий, вес.%: медь 1,9-2,7; магний 1,2-1,8; марганец 0,2; железо 0,8-1,4; кремний 0,35; титан 0,02-0,1; никель 0,8-1,4; цинк 0,3; хром 0,1; алюминий

There are two types of engine pistons. Casting and forging. In the first case may be AlSi13 alloy. In the second AA 7075.

To improve the mechanical properties, alloying additives of copper, manganese, Nickel, chromium are introduced into the alloys.

Thank you for the information

Для изготовления поршней ДВС в основном используют алюминиевые сплавы, реже серый или ковкий чугун, композиционные материалы.

I worked in manufacturing of pistons by casting . We used Al Si 12% .

Materials for the manufacture of pistons are cast iron and aluminum alloys. The most commonly used cast iron grade SCH 24-44, as well as alloyed cast iron with additives of vanadium, copper, titanium, chromium. Cast iron has a higher strength and wear resistance than aluminum alloys, as well as a lower coefficient of line-1YUG0 expansion, which reduces the gaps between the piston and the working surface of the sleeves providing approximately 100 km of mileage.

Since the item works in unbearable conditions, the metals for its manufacture, are quite strict requirements:

to reduce inertial loads the material must have a small specific weight with sufficient strength;

small coefficient of thermal expansion;

preservation of physical properties (strength) at elevated temperatures;

significant thermal conductivity and heat capacity;

minimum coefficient of friction paired with the cylinder wall material;

significant wear resistance;

no fatigue failure of the material under the influence of loads;

low price, accessibility and ease of mechanical and other types of processing in the production process.

It is clear that the metal completely corresponding to the listed requirements simply does not exist. Therefore, for mass automobile engines, pistons are made mainly from two materials-cast iron and aluminum alloys, and to be precise, from silumin alloys containing aluminum and silicon.

From the analysis of the working conditions of the part and the set of requirements for it, as well as its economic indicators, it is known that for the manufacture of pistons currently mainly use aluminum alloys, rarely gray cast iron, as well as composite materials, and in some cases steel.

As a material, the following grades of alloys: D16, AK4-1, SCH-45, 20X3MVF, 03N18K9M5T

In first place, many thanks Sirs for recommend my answer.

I investigate another process to make piston, the Thixoforming Process. In this sense: Thixoforming is the shaping of metal alloys in the semi-solid state.

The process requires that the alloys be treated had spheroidal microstructure.

For example, two methods to obtain spheroidal microstructure are used: 1) electromagnetic stirring and 2) casting followed by extrusion in the semi-solid state.

Thixoforming has the potential to make possible the mass production of aluminium-high silicon pistons (initially ~17% Si by weight). This alloy is less dense and has a lower thermal expansion coefficient than gravity die cast pistons which are based on an alloy with the eutectic silicon content of ~13%. Gravity die casting of hypereutectic alloys is difficult because: the melt temperature has

to be significantly higher than for a eutectic alloy (~750°C vs. ~650°C) leading to die attrition and coarse silicon particles in the microstructure; there is a tendency for hypereutectic silicon to segregate especially in the thick sections of the castings.

Forging pistons also presents difficulties with high-silicon alloys because of the hardness of the material and difficulties with re-entrant surfaces.

This information is from: DOI: 10.4028/www.scientific.net/SSP.141-143.201

This process has at last three advantages:

1) The forming piece could have many details.

2) The forming piece will not have defects.

3) The forming load is very little.

What DO you think about Use of Casting Billets as Material Forging for Al Alloy 4032 Forging?

Forging Part is Piston

Material is M124 P Which is similar to 4032.

What problems may arise in Forging?

Part Weight Is about 4.5 kg.

In its composition, this composite material has some advantages and can be used as a material for the pistons of high-speed engines.

ElementContent (%)

Aluminum,Al85

Silicon, Si12.20

Magnesium, Mg1.0

Copper , Cu0.90

Nickel, Ni0.9

Al/Si alloy is mostly used as piston material. Certain amount of Chromium can be added to improve its toughness.

For the manufacture of pistons used gray and ductile iron of the following brands: SCH 24-44, SCH 28-48, SCH 32-52. AL1, AK2, AK4, and ZHLS alloys were the most widely used of light aluminum alloys. Low-carbon steel or cast iron is used as the material for inserts under the first compression ring. In recent years, work is underway on the use of heat-resistant steels for pistons, which allow you to get a solid structure with the lowest weight, since the walls of the skirt can be made quite thin. The main disadvantages of this design are: increasing the cost of processing the piston and increasing the wear of the cylinder liner. All pistons are subjected to heat treatment (hardening and aging or only aging). The hardness of the pistons of aluminum alloys varies from 90 to 120 HB. To reduce the burn - in period of the piston — cylinder wall pair, the side surface of the piston is covered with fusible metals (tinning with a coating thickness of 0, 005-0, 002 mm).

Please find the attachment. In section 4 (page 59) a comprehensive discussion is presented about different piston materials.

Thank you for your recommendation Mr. Reza your help is important

You are welcome Mr. Rustam