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Characterization of Inconel 718 Pulsed TIG Repair Weld Used in an Aircraft Motor Component

  • J. L. Fernandes , C. Barbosa and J. Lopes do Nascimento
Published/Copyright: September 28, 2017
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Practical Metallography
From the journal Practical Metallography Volume 54 Issue 10

Abstract

Inconel 718 is a widely used alloy in aircraft motor components due to a combination of some properties that are very favorable to this type of application and among these properties two ones must be emphasized: Good corrosion resistance at relatively high temperatures and adequate strength at theses temperatures. In spite of these favorable characteristics of this alloy, the normal service conditions of these components can generate damages that can hamper their use, thus leading to the necessity of weld repair in some regions of these elements. In this work, a study on the microstructural and mechanical properties characterization of the seal of an aircraft motor is carried out. With this purpose techniques such as optical microscopy, scanning electron microscopy (SEM) and microhardness were used to analyze the microstructure and mechanical properties of Inconel 718 after repair welding and aging.

Kurzfassung

Inconel 718 ist in Flugzeugtriebwerkskomponenten aufgrund einer Kombination einiger für diese Art der Anwendung sehr vorteilhafter Eigenschaften weit verbreitet. Zwei dieser Eigenschaften sollen an dieser Stelle hervorgehoben werden: Gute Korrosionsbeständigkeit bei relativ hohen Temperaturen und bei solchen Temperaturen hinreichende Festigkeit. Trotz dieser vorteilhaften Eigenschaften der Legierung können normale Betriebsbedingungen bei diesen Komponenten zu Schäden führen, die ihre Nutzung beeinträchtigen können, so dass in einigen Bereichen dieser Elemente Reparaturschweißungen erfolgen müssen. In dieser Arbeit werden die mikrostrukturellen und mechanischen Eigenschaften der Dichtung eines Flugzeugtriebwerks untersucht. Vor diesem Hintergrund wurden zur Untersuchung des Gefüges und der mechanischen Eigenschaften von Inconel 718 nach einer Reparaturschweißung und Auslagerung mit Methoden wie der lichtoptischen Mikroskopie, Rasterelektronenmikroskopie (REM) und Mikrohärtemessung gearbeitet.

Translation: E. Engert

References / Literatur

[1] Muzyka, D. R.: The metallurgy of nickel-iron alloy, in: Sims, C. T.; Hagel, W. C.(eds); The superalloys, chapter 4, New York, USA, John Wiley & Sons, New York, 1972.Search in Google Scholar

[2] Thomas, A; El-Wahabi, M.; Cabrera, J. M.; Prado, J. M: Journal of Materials Processing Technology2006, 469. 10.1016/j.jmatprotec.2006.04.072Search in Google Scholar

[3] Cai, D.; Zhang, W.; Nie, P.; Liu, W.; Yao, M.: Materials Characterization2007, 220. 10.1016/j.matchar.2006.04.020Search in Google Scholar

[4] Leea, W.; Linb, C.; Chenc, T.; Hong-Wei Chen, H.: Materials Science and Engineering A2011, 6279.10.1016/j.msea.2011.04.079Search in Google Scholar

[5] Chang, S.; Journal of Alloys and Compounds2009, 716. 10.1016/j.jallcom.2009.07.046Search in Google Scholar

[6] Amato, K. N.; Gaytan, S. M.; Murr, L. E.; Martinez, E.; Shindo, P. W.; Hernande, J.; Collins, S.; Medin, F.: Acta Materialia2012, 2229.10.1016/j.actamat.2011.12.032Search in Google Scholar

[7] Zhang, S.; Zhang, H.; Cheng, M.: Materials Science and Engineering A2011, 6253. 10.1016/j.msea.2011.04.074Search in Google Scholar

[8] Zhang, H. Y.; Zhang, S. H.; Cheng, M.; Li, Z. X.: Materials Characterization, 2010, 49.10.1016/j.matchar.2009.10.003Search in Google Scholar

[9] Azadian, S.; Wei, L.; Warren, R.: Materials Characterization, 2004, 7. 10.1016/j.matchar.2004.07.004Search in Google Scholar

[10] Yuan, H.; Liu, W. C.: Materials Science and Engineering A, 2005, 281. 10.1016/j.msea.2005.08.126Search in Google Scholar

Received: 2016-07-20
Accepted: 2017-03-24
Published Online: 2017-09-28
Published in Print: 2017-10-16

© 2017, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Systematic Expansion of the Microstructural Characterization of Ferritic Weld Metals
  7. A Correlative Approach to Capture and Quantify Substructures by Means of Image Registration
  8. Characterization of Inconel 718 Pulsed TIG Repair Weld Used in an Aircraft Motor Component
  9. Metallurgical Failure Investigation of Cracking of a Vent Nozzle on a Pressure Pulsation Dampener of a Natural Gas Compressor
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
https://doi.org/10.3139/147.110421

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Systematic Expansion of the Microstructural Characterization of Ferritic Weld Metals
  7. A Correlative Approach to Capture and Quantify Substructures by Means of Image Registration
  8. Characterization of Inconel 718 Pulsed TIG Repair Weld Used in an Aircraft Motor Component
  9. Metallurgical Failure Investigation of Cracking of a Vent Nozzle on a Pressure Pulsation Dampener of a Natural Gas Compressor
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
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