Abstract

The binary system rhenium–aluminium is characterized by the occurrence of seven intermediate phases and two eutectics. The intermediate phases are: Re 2Al, ReAl, Re 4Al 11, ReAl 4( h), Re 8Al 33− x , ReAl 6, and ReAl 12. They form at 1494±4°C (peritectoid), 1060±10°C (peritectoid), 1665°C (congruent melting), 1404±4°C (incongruent melting), 1008±4°C (polymorphic transformation), 803±4°C (incongruent melting), and 750±4°C (incongruent melting), respectively. Crystal structure data and lattice parameters for all these phases are given. The two eutectics occur (1) at 1655±3°C and ∼74 at%Al, and (2) at 658°C and >99 at%Al.

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