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Development of HT-Brazing Systems for Non-Similar Material Composites

Dedicated to the Lette Verein Berlin on the occasion of its 150th jubilee
  • R. Blank , I. Reinkensmeier , A. Neidel and L. Farahbod
Published/Copyright: September 29, 2016
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Practical Metallography
From the journal Practical Metallography Volume 53 Issue 10

Abstract

The present article demonstrates the importance of metallography as an indispensable tool for process control as well as for establishment of basic principles for the process development based on a concrete practical example from the field of brazing of gas turbine components. This example serves to identify and prove the effects of differences in the thermal expansion behavior of non-similar materials on the braze joint by means of metallographic examinations. The knowledge acquired is used to realize braze connections of respective material composites.

Kurzfassung

Der vorliegende Artikel soll anhand eines konkreten Praxisbeispiels aus dem Bereich des Hochtemperaturlötens von Gasturbinenkomponenten die Bedeutung der Metallographie als unverzichtbares Werkzeug in der Prozesskontrolle, sowie zur Erarbeitung von Grundlagen für die Prozessentwicklung, aufzeigen. In diesem Beispiel konnten die Auswirkungen von Unterschieden im thermischen Ausdehnungsverhalten verschiedener Werkstoffe auf die Lötnaht, mit Hilfe von metallographischen Untersuchungen erfasst und belegt werden. Die gewonnenen Erkenntnisse werden genutzt, um Lötverbindungen entsprechender Werkstoffverbunde zu realisieren.

References / Literatur

[1] M.Weinreich, „Hartlöten – Eine Einführung“, Düsseldorf: DVS Media, 2010Search in Google Scholar

[2] Key to Metals, Totalmateria Datenbank, www.totalmateria.comSearch in Google Scholar

[3] DIN EN ISO 17672, Hartlöten – LoteSearch in Google Scholar

Received: 2016-03-29
Accepted: 2016-04-08
Published Online: 2016-09-29
Published in Print: 2016-10-14

© 2016, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Analysis of Crack Propagation, Determination of Dynamic Strength and Metallographic Examination / Hardness Test using the Example of a 25 CrMo 4 Monobloc Tubular Shaft
  7. Development of HT-Brazing Systems for Non-Similar Material Composites
  8. Cause of Damage – Hot Cracking
  9. Failure of Hot-Dip Galvanized Steel Parts
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
https://doi.org/10.3139/147.110402

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Analysis of Crack Propagation, Determination of Dynamic Strength and Metallographic Examination / Hardness Test using the Example of a 25 CrMo 4 Monobloc Tubular Shaft
  7. Development of HT-Brazing Systems for Non-Similar Material Composites
  8. Cause of Damage – Hot Cracking
  9. Failure of Hot-Dip Galvanized Steel Parts
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
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