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A Procedure for in situ Identification of the Intermetallic AlTMSi Phase Precipitates in the Microstructure of the Aluminum Alloys

  • M. Warmuzek and K. Regulski
Published/Copyright: May 23, 2013
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Practical Metallography
From the journal Practical Metallography Volume 48 Issue 12

Abstract

In this work, the results of the examinations of morphology and chemical composition of the primary AlTMSi intermetallic phases precipitates observed in the Al–Si cast alloys microstructure have been presented. A procedure for the treatment of EDS X-ray microanalysis results (selection and classification) using fuzzy logic concept has been developed and then tested in application for AlTMSi phase identification. Statistically significant differences in the chemical composition have been revealed between the analyzed groups of precipitates of both α- and β-AlTMSi phases formed in hypo- and eutectic Al-Si alloys with the same content of transition metals. The range of the measured Mn solubility in the precipitates of different crystal lattices has been statistically estimated.

Kurzfassung

In dieser Arbeit werden Ergebnisse vorgestellt, die durch die Untersuchung von Morphologie und chemischer Zusammensetzung primärer intermetallischer AlTMSi-Phasenausscheidungen im Gefüge von Al–Si-Gusslegierungen gewonnen wurden. Basierend auf der Fuzzy-Logik wurde ein Verfahren zur Auswertung der Ergebnisse der EDX-Mikroanalyse (Auswahl und Klassifizierung) entwickelt und für die Bestimmung der AlTMSi-Phase in der Praxis getestet. Statistisch zeigten sich bedeutende Unterschiede in der chemischen Zusammensetzung der untersuchten α- und β-AlTMSi-Phasenausscheidungen in untereutektischen und eutektischen Al-Si-Legierungen mit gleichem Gehalt an Übergangsmetallen. Der Bereich der gemessenen Mn-Löslichkeit in den Ausscheidungen verschiedener Kristallgitter wurde statistisch bestimmt.

Übersetzung: D. Boßlet

DSc Małgorzata Maria Warmuzek is a graduate of from AGH University of Science and Technology in Kraków, Poland. Since 1974 she has been working for the Foundry Research Institute, Krakow, in Materials Testing Laboratory. Her special field of interest are metallographic investigations (LM, SEM, EDS microanalysis) of polyphase metal alloys, especially different procedures of identification and description of microstructure constituents. She is a charter member of Polish scientific societies: Polish Branch of EMAS and Polish Stereological Society. She is an author of 70 scientific publications and 2 books.

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Received: 2009-2-9
Accepted: 2010-3-2
Published Online: 2013-05-23
Published in Print: 2011-12-01

© 2011, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Dynamic Recovery and Recrystallization during Hot-Working in an Advanced TiAl Alloy
  7. Automated SEM/EDX Particle Analysis to Determinate Non-Metallic Inclusions in Steel Samples: Round Robin Tests Aiming at Studying the Comparability of Results from Different Measurement Systems
  8. A Procedure for in situ Identification of the Intermetallic AlTMSi Phase Precipitates in the Microstructure of the Aluminum Alloys
  9. Liquation Cracks in Hot Upset Low Alloy Steel Screw Heads
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
https://doi.org/10.3139/147.110045

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Dynamic Recovery and Recrystallization during Hot-Working in an Advanced TiAl Alloy
  7. Automated SEM/EDX Particle Analysis to Determinate Non-Metallic Inclusions in Steel Samples: Round Robin Tests Aiming at Studying the Comparability of Results from Different Measurement Systems
  8. A Procedure for in situ Identification of the Intermetallic AlTMSi Phase Precipitates in the Microstructure of the Aluminum Alloys
  9. Liquation Cracks in Hot Upset Low Alloy Steel Screw Heads
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
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