Abstract: An aluminum alloy for high pressure die-casting capable of providing a sufficient castability and a tensile strength of not less than 320 MPa and elongation of not less than 20%, The aluminum alloy contains from 3.6 to 5.5 mass % of Mg, from 0.6 to 1.2 mass % of Mn, from 0.2 to less than 0.5 mass % of Ni, from 0.001 to 0.010 mass % of Be, from 0.01 to 0.3 mass % of Ti, from 0.001 to 0.05 mass % of B, and the balance aluminum and inevitable impurities. The aluminum alloy is particularly available as a material of a vehicle frame and a vehicle body.

Abstract: A method for producing a cylinder block capable of providing sufficient bonding between the cylinder liner and a block body. The cylinder block producing method includes an inner peripheral surface roughening process, outer peripheral surface roughening process, adiabatic particle adhesion process, and melt bonding process. In the inner peripheral surface roughening process, shot blasting is performed to the inner surface of the cylinder liner. In the outer peripheral surface roughening process, semi-spherical dimples are formed on the outer surface of the cylinder liner by sinking the shot balls by their semi-spherical amount into the liner by means of shot blasting. Zn balls and stainless beads each having diameter of 0.4 mm, or Zn balls having diameter of 0.8 mm are used as the shot balls. In the adiabatic particle adhesion process, BN particles are adhered to the inner surface of the cylinder liner.

Abstract: An aluminum alloy for high pressure die-casting capable of providing a sufficient castability and a tensile strength of not less than 320 MPa and elongation of not less than 20%, The aluminum alloy contains from 3.6 to 5.5 mass % of Mg, from 0.6 to 1.2 mass % of Mn, from 0.2 to less than 0.5 mass % of Ni, from 0.001 to 0.010 mass % of Be, from 0.01 to 0.3 mass % of Ti, from 0.001 to 0.05 mass % of B, and the balance aluminum and inevitable impurities. The aluminum alloy is particularly available as a material of a vehicle frame and a vehicle body.

Abstract: A high-strength aluminum alloy for pressure casting exhibiting a tensile strength of not less than 35 kgf/mm2 and an elongation of not less than 5.0% is provided. The aluminum alloy comprises 3.5 to 5.0% of Cu, 6.5 to 7.5% of Si, not more than 0.36% of Mg, not more than 0.35% of Fe, and the balance comprising Al and unavoidable impurities.

Abstract: A method for producing a cylinder block capable of providing sufficient bonding between the cylinder liner and a block body. The cylinder block producing method includes an inner peripheral surface roughening process, outer peripheral surface roughening process, adiabatic particle adhesion process, and melt bonding process. In the inner peripheral surface roughening process, shot blasting is performed to the inner surface of the cylinder liner. In the outer peripheral surface roughening process, semi-spherical dimples are formed on the outer surface of the cylinder liner by sinking the shot balls by their semi-spherical amount into the liner by means of shot blasting. Zn balls and stainless beads each having diameter of 0.4 mm, or Zn balls having diameter of 0.8 mm are used as the shot balls. In the adiabatic particle adhesion process, BN particles are adhered to the inner surface of the cylinder liner.