Rapidly solidified aluminum alloys are candidate materials for applications in marine and aerospace industries. Al—Ti-based alloys are particularly attractive because of their high strength to weight ratio.1 In recent years corrosion studies on various rapidly solidified powder metallurgy aluminum alloys have been reported.2-9 The various aluminum alloys studied have included 2618 and 2024 alloys2 7090 alloys,5 Al—Fe,3,7 Al—Li,4-6 Al—Mg,4,7 Al—Cu,4,7 Al—Er,9 Al—Fe—Mo,5 Al—Zn—Mg,8 and Al—Zn—Mg—Cu.4 One study7 in particular investigated a number of binary and ternary aluminum alloys containing Mg, Ti, Mn, Cr, Fe, Ni, C, Zn, Zr, Nb, and/or Si. However, binary Al—Ti was not considered and the only Ti-containing alloy studied was Al—6%Ti—5%Si.7
The purpose of this investigation is to determine the general corrosion and localized corrosion behavior of rapidly solidified Al—Ti-based alloys and compare it to that of Al—8%Fe—2%Mo.
The alloys studied were...
