Metastable structures in alloys rapidly cooled from the melt

[摘要] Small amounts of liquid alloys are cooled to the solidstate very rapidly by means of a technique which is described in detail. Procedures for studying the resultant thin, irregular foils are discussed; most of the results are obtained from x-ray diffraction experiments. Among the nonequilibrium structures found in various alloys are cited the metastable solid solutions in silver-copper and galliumantimonide-germanium alloys, the extended primary solidsolutions in some silver-base alloys, and the metastablehexagonal close-packed structures in silver-germaniumalloys. The quenching technique is discussed and tentativecriteria for the prediction and rationalization of certainmetastable structures in alloy systems are inferred from ananalysis of the process.

[发布机构] University:California Institute of Technology;Department:Engineering and Applied Science

[关键词] Engineering