Wärmebeständige, verschleissbeständige und hochfeste Al-Si-Legierung und ihre Verwendung für Zylinderbuchsen.

摘要

A heat-resistant, wear-resistant and high-strength Al-Si alloy, wherein (A) 3 to 5% by weight based on the total amount of the alloy of alumina particles having a maximum particle diameter of 30 mu m or less and an average particle diameter of 10 mu m or less and having shapes with no sharp edge and (B) 0.5 to 3% by weight based on the total amount of the alloy of graphite particles having a maximum particle diameter of 10 mu m or less as measured on a cross section of the Al-Si alloy structure are dispersed in a matrix consisting essentially of ingredients for an Al-Si alloy and having primary Si crystals, the sizes of the primary Si crystals being not larger than 10 mu m.