Microstructural development in microsecond pulsed laser melted polycrystalline nickel

Metastable phases in the aluminum-germanium alloy system: Synthesis by mechanical alloying and pressure induced transformations

“…Metastable crystalline phases of aluminum and germanium have been investigated extensively, because of the similarities between the aluminum-germanium system and the commercially important aluminum-silicon system, and also because of superconducting [81] also reported the )'l phase to be tetragonal, but with a = 0.659 nm and c = 1.201 nm. More recent publications [86,87] also support K6ster's findings. It has been suggested [79] that the disagreement over the structure of the )'1 phase could be due to a lack of control over the cooling rates, which may vary considerably (several orders of magnitude)…”