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Office of Scientific and Technical Information
 

Advanced cast aluminum alloys for automotive engine application with superior high-temperature properties

Patent ·
OSTI ID:1735185
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A high fatigue strength aluminum alloy comprises in weight percent copper 3.0-3.5%, iron 0-1.3%, magnesium 0.24-0.35%, manganese 0-0.8%, silicon 6.5-12.0%, strontium 0-0.025%, titanium 0.05-0.2%, vanadium 0.20-0.35%, zinc 0-3.0%, zirconium 0.2-0.4%, a maximum of 0.5% other elements and balance aluminum plus impurities. The alloy defines a microstructure having an aluminum matrix with the Zr and the V in solid solution after solidification. The matrix has solid solution Zr of at least 0.16% after heat treatment and solid solution V of at least 0.20% after heat treatment, and both Cu and Mg are dissolved into the aluminum matrix during the heat treatment and subsequently precipitated during the heat treatment. A process for heat treating an Al—Si—Cu—Mg—Fe—Zn—Mn—Sr-TMs alloy comprises heat treating the alloy to produce a microstructure having a matrix with Zr and V in solid solution after solidification.
Research Organization:
Ford Global Technologies, LLC, Dearborn, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0006020
Assignee:
Ford Global Technologies, LLC (Dearborn, MI)
Patent Number(s):
10,752,980
Application Number:
15/663,510
OSTI ID:
1735185
Country of Publication:
United States
Language:
English

References (1)

High Temperature Mechanical Properties of Al–Si–Mg–(Cu) Alloys for Automotive Cylinder Heads journal January 2013

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36 MATERIALS SCIENCE