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Metal-Matrix-Composites for Lighter Weight Designs
2009/SiC/25p
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2009/SiC/25p Aluminum Metal-Matrix-Composite (Al MMC) is an ideal material for automotive engine moving parts, aerospace forgings and machined components such as hydraulic actuators. Its combination of enhanced strength and Titanium matching stiffness, cannot be matched by monolithic aluminum alloys. DWA-USA’s 2009 alloy Al MMCs also possess excellent fracture toughness. The measured KIC values for 2009/SiC/15p Al MMC forgings is 23 MPa√m (20.7 ksi√in).

2009/SiC/25p is a powder metallurgy Al MMC comprised of AA2009 aluminum and 25 Vol% Silicon Carbide particles. It is available in vacuum-hot-pressed billet, extruded and forged product forms.

 

  • Titanium matching elastic modulus
  • Enhanced yield and ultimate strength
  • Elevated temperature strength retention
Units:
Eng

TYPICAL AND MINIMUM MECHANICAL PROPERTIES FOR EXTRUDED FORGING STOCK

2009/SiC/25p-T4
Density= 0.1042 lb/in3 		 F, ty
ksi		 F, tu
ksi		 elong
%
3.75in Bar (14:1) Typical L 65 86 3.4
1.1in Bar (168:1) Typical L 66 91 5.2
Minimum Properties Minimum properties have not been established
Notes:
1) Young's Modulus is typically 16.9 msi.
2) Typical Rockwell B scale hardness is 85-88.
Data is representative for 1 inch maximum section thickness during heat treatment. Mechanical properties will be dependent on the Al MMC material system, product form, geometry and heat treatment method.
Si

TYPICAL AND MINIMUM MECHANICAL PROPERTIES FOR EXTRUDED FORGING STOCK

2009/SiC/25p-T4
Density= 2.89 g/cm3 		 F, ty
MPa		 F, tu
MPa		 elong
%
90mm Bar (14:1) Typical L 448 593 3.4
28mm Bar (168:1) Typical L 455 627 5.2
Minimum Properties Minimum properties have not been established
Notes:
1) Young's Modulus is typically 116.5 GPa.
2) Typical Rockwell B scale hardness is 85-88.
Data is representative for 25mm maximum section thickness during heat treatment. Mechanical properties will be dependent on the Al MMC material system, product form, geometry and heat treatment method.

 

 

MATRIX ALLOY CHEMICAL COMPOSITION FOR 2009/SiC/25p

2009/SiC/25p
Density= 0.1042 lb/in3 (2.89 g/cm3)
Al Cu Mg Si Fe Zn Ti Ni Cr Mn O Other,
Each		 Others,
Total
Bal 3.2-
4.4		 1.0-
1.6		 0.25
max		 0.20
max		 0.10
max		 -- -- -- -- 0.6
max		 0.05
max		 0.15
max
Notes:
1) Compositional limits shown as weight percent (wt%).
2) Silicon carbide particle content shall be maintained at 25.0 ±1.0 Vol%.
2009/SiC/25p Data Sheet File Format: pdf
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Density Adjusted Properties of Aluminum MMCs Compared to Steel, Titanium and Aluminum

density-adjusted-properties-of-aluminum-mmcs

One of the clear advantages of Al MMCs compared to conventional metallic materials is greatly enhanced strength and stiffness. These property gains are achieved without impacting material density, so the specific properties of Al MMC are dramatically increased. Al MMCs are also isotropic composite materials. Their design space is not dependent on reinforcement orientation.

Primary Processing
Primary Processing
Secondary Processing
Secondary Processing
Finishing
Finishing
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Aluminum Metal-Matrix-Composites Manufacturing

The Al MMC manufacturing process can be divided into three elements- primary processing, secondary processing and finishing. Unlike other composite materials, after primary processing of the billet, Al MMCs offer a high level of “fit, form and function” when inserted into the industrial manufacturing stream, making use of conventional facilities and equipment.

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