SEPARATION OF SUPERSATURATED AL-FE SOLID-SOLUTION ON QUENCHING FROM LIQUID-STATE

The structure of supersaturated solid solutions of iran in aluminum ob tained by melt-quenching at different rates is studied using: X-ray an alysis, transmission electron microscopy and Mossbauer spectroscopy. I n the quenching rate range 10(5)-10(6) K/s the solid solution is separ ated into two fee phases. One of them is a supersaturated iron-substit ution solid solution in aluminum, the other is a ''cluster'' type soli d solution containing iron associates. The volume fraction of the dust er solid solution decreases with the increase of quenching rate.