Please use this identifier to cite or link to this item: doi:10.22028/D291-23821
Title: Microstructure and phase composition in high-strength aluminium alloys produced by a splat-cooling technique
Author(s): Kinder, Joachim
Arzt, Eduard
Language: English
Year of Publication: 1991
OPUS Source: Zeitschrift für Metallkunde. - 82. 1991, 7, S. 503-509
SWD key words: Aluminiumlegierung
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Rapid solidification (RS) experiments have been carried out on high-strength AIZnMgCuX alloys (X = Zr, Ti, Cr or Mn) using the rotating-wing splat-cooling technique. The resulting particles ("splats") were examined by light-microscopy, X-ray diffraction (Guinier-technique) and TEM. In comparison to industrially produced powders the microstructure was refined by about a factor of two. The alloying elements could be kept partially in solution and/or led to metastable phases which precipitated during solidification or handling before subsequent examination. Heat treatment of the rapidly solidified splats generated a relatively homogeneous and dense precipitation of several metastable and/or stable phases. In some cases the RS technique used could not prevent special high-melting phases from precipitating already in the melt. These phases acted as quite effective grain size stabilizers during subsequent heat treatment. The higher solidification rates are concluded to show potential for improving the mechanical properties of these alloys.
Link to this record: urn:nbn:de:bsz:291-scidok-17618
Date of registration: 2-Dec-2008
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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