Heat resistant slide member for internal combustion engine

A heat resistant slide member for an internal combustion engine, which is a plastically worked member formed from a quenched and solidified aluminum alloy containing at least one selected from the group consisting of Cr, Fe, Zr, Ti, Mn, Ni, V, Ce, Mo, La, Nb, Y, Hf and Co in an amount of 5% or more and 30% or less by weight and having an average diameter of precipitates and crystallizates therein of 50 .mu.m or less and further having a tensile strength at 300.degree. C. of 18 kg/mm.sup.2 or more, wherein a metal flow line in a sliding portion of the worked member is set in a sliding direction thereof.

A heat resistant slide member for an internal combustion engine, which is formed of an aluminum alloy matrix having a tensile strength at 300.degree. C. of 10 kg/mm.sup.2 or more, and a ceramic fiber having a volume fraction of 3% or more and 25% or less, and which has a tensile strength at 300.degree. C. of 20 kg/mm.sup.2 or more.