Casting made from aluminium alloy, having high hot creep and fatigue resistance

Cast part made of aluminum alloy of chemical composition, expressed in percentages by weight, consisting essentially of:

• Si:
• at least 3% and less than 9%
• Fe<0.50%
• Cu:
• 2.0-5.0%
• Mn:
• 0.05-0.50%
• Mg:
• 0.10-0.19%
• Zn:
• <0.30%
• Ni:
• <0.10%
• V:
• 0.05-0.17%
• Zr:
• 0.05-0.25%
• Ti:
• 0.01-0.25%
• optionally one or more elements to modify eutectics chosen from Sr (30-500 ppm), Na (20-100 ppm) and Ca (30-120 ppm), or Sb (0.05-0.25%) to refine eutectics, and
• other elements <0.05% each and 0.15% in total, the rest aluminum,
• wherein the cast part is an automotive engine component, and
• wherein the cast part has a microstructure that includes one or both of an Al5FeSi phase and an Al5(Fe,Mn)Si2 phase.

Cast part made of aluminum alloy of chemical composition, expressed in percentages by weight, consisting essentially of:

• Si:
• at least 3% and less than 9%
• Fe<0.50%
• Cu:
• 2.0-5.0%
• Mn:
• 0.05-0.50%
• Mg:
• 0.10-0.25%
• Zn:
• <0.30%
• Ni:
• <0.10%
• V:
• 0.05-0.19%
• Zr:
• 0.05-0.25%
• Ti:
• 0.01-0.25%
• optionally one or more elements to modify eutectics chosen from Sr (30-500 ppm), Na (20-100 ppm) and Ca (30-120 ppm), or Sb (0.05-0.25%) to refine eutectics, and
• other elements <0.05% each and 0.15% in total, the rest aluminum,
• wherein the cast part is an automotive engine component,
• wherein the cast part has a microstructure that includes one or both of an Al5FeSi phase and an Al5(Fe,Mn)Si2 phase, and
• wherein the alloy has a yield strength of at least 285 MPa at 20° C., at least 86 MPa at 250° C., and at least 50 MPa at 300° C.

Cast part made of aluminum alloy of chemical composition, expressed in percentages by weight, consisting essentially of:

• Si:
• at least 3% and less than 9%
• Fe<0.50%
• Cu:
• 2.0-5.0%
• Mn:
• 0.05-0.50%
• Mg:
• 0.10-0.25%
• Zn:
• <0.30%
• Ni:
• <0.10%
• V:
• 0.05-0.19%
• Zr:
• 0.05-0.25%
• Ti:
• 0.01-0.25%
• optionally one or more elements to modify eutectics chosen from Sr (30-500 ppm), Na (20-100 ppm) and Ca (30-120 ppm), or Sb (0.05-0.25%) to refine eutectics, and
• other elements <0.05% each and 0.15% in total, the rest aluminum,
• wherein the cast part is an automotive engine component,
• wherein the cast part has a microstructure that includes one or both of an Al5FeSi phase and an Al5(Fe,Mn)Si2 phase, and
• wherein the alloy has a yield strength of at least 285 MPa at 20° C.

Cast part made of aluminum alloy of chemical composition, expressed in percentages by weight, consisting essentially of:

• Si:
• at least 3% and less than 9%
• Fe<0.50%
• Cu:
• 2.0-5.0%
• Mn:
• 0.05-0.50%
• Mg:
• 0.10-0.25%
• Zn:
• <0.30%
• Ni:
• <0.10%
• V:
• 0.05-0.19%
• Zr:
• 0.05-0.25%
• Ti:
• 0.01-0.25%
• optionally one or more elements to modify eutectics chosen from Sr (30-500 ppm), Na (20-100 ppm) and Ca (30-120 ppm), or Sb (0.05-0.25%) to refine eutectics, and
• other elements <0.05% each and 0.15% in total, the rest aluminum,
• wherein the cast part is an automotive engine component,
• wherein the cast part has a microstructure that includes one or both of an Al5FeSi phase and an Al5(Fe,Mn)Si2 phase, and
• wherein the alloy has a yield strength of at least 285 MPa at 20° C., and at least 86 MPa at 250° C.

Cast part made of aluminum alloy of chemical composition, expressed in percentages by weight, consisting essentially of:

• Si:
• at least 3% and less than 9%
• Fe<0.50%
• Cu:
• 2.0-5.0%
• Mn:
• 0.05-0.50%
• Mg:
• 0.10-0.25%
• Zn:
• <0.30%
• Ni:
• <0.10%
• V:
• 0.05-0.19%
• Zr:
• 0.05-0.25%
• Ti:
• 0.01-0.25%
• optionally one or more elements to modify eutectics chosen from Sr (30-500 ppm), Na (20-100 ppm) and Ca (30-120 ppm), or Sb (0.05-0.25%) to refine eutectics, and
• other elements <0.05% each and 0.15% in total, the rest aluminum,
• wherein the cast part is an automotive engine component,
• wherein the cast part has a microstructure that includes one or both of an Al5FeSi phase and an Al5(Fe,Mn)Si2 phase, and
• wherein the alloy has a yield strength of at least 285 MPa at 20° C., and at least 50 MPa at 300° C.