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Aluminium/Copper Metal Matrix Composite (AL427915)

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Description

This product is an aluminium matrix composite, comprised of a AA2124 matrix reinforced with 17vol% of ultrafine (2 - 3 μm) SiC particles.


The special metallurgy route used to produce this material occurred by a proprietary high - energy mixing process which ensures excellent particle distribution and enhances the mechanical properties, while at the same time purity of the matrix is being maintained.


The interaction between matrix and finely dispersed reinforcement results in an improvement in stiffness. It offers a high tensile modulus, good strength and fatigue strengths well in excess of high performance Aluminium alloys while retaining good ductility and formability.

Properties

General

Density ρ

2.85 g/cm³ at 20 °C

Mechanical

Elastic modulus E

100 GPa at 20 °C

Elongation A

7 % at 20 °C

Fatigue strength SNf

300 MPa at 20 °C

R = -1, Kt = 1, 10 million cycles

Tensile strength Rm

620 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

420 MPa at 20 °C

Chemical properties

Element

Weight %

Comment

Al

-

balance

Si

17 %

as SiC

Cu

3.3 %

Mg

1.2 %

Mn

0.4 %

More

Technological properties

Application areas

Advanced automotive (pistons, cylinder liners, connecting rods, brake callipers, chassis components) and aerospace & defence (aero engine components, aircraft structure, brakes and wheels, control systems)

Processing history

Fine aluminium and SiC powders were first mixed and de-gassed, then consolidated by hot isostatic pressing. The resulting billets were extruded and plates were finally T1 heat treated. T1: Air Cooled from elevated temperature shaping process and naturally aged to a substantially stable condition. Suitable for low stress parts or those subject to high temperature soak in operation. Suitable as a supply condition for material that will be further processed and heat treated.

This material data has been provided by Goodfellow.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.