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Heat Treatment and Microstructural Contrasting on Low-Alloy Copper-Based Alloys

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Published/Copyright: March 6, 2018
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Practical Metallography
From the journal Practical Metallography Volume 55 Issue 3

Abstract

Copper is a material used in a wide range of applications. The combination of electrical conductivity and mechanical strength is a feature which is especially important when it comes to conductive and contact materials. This combination of properties in low-alloy copper-based alloys can be achieved when the material is subjected to a thermomechanical treatment consisting of rolling and annealing.

Samples of the alloy CuNi1.5Si0.3 were taken at distinctive steps of the industrial manufacturing process for semi-finished products in order to examine the influence of the manufacturing parameters on the microstructure during solution annealing, rolling, and aging. The sample material for the respective chosen conditions was aged in the laboratory at various temperatures. Quasi-static tensile tests were performed, the electrical conductivity was determined, the microhardness was measured, and the microstructure was examined on metallographic sections in order to characterize the material conditions.

Kurzfassung

Kupfer ist ein vielseitig eingesetzter Werkstoff. Speziell für die Anwendung als Leit- und Kontaktwerkstoffe ist die Kombination von elektrischer Leitfähigkeit und mechanischer Festigkeit die wichtigste Eigenschaft. Diese Kombination kann bei niedriglegierten Kupferbasislegierungen durch eine thermomechanische Behandlung aus Walzen und Glühen erzielt werden.

Um den Einfluss der Fertigungsparameter beim Lösungsglühen, Walzen und Auslagern auf die Mikrostruktur zu untersuchen, wurde an markanten Stellen der industriellen Halbzeugfertigung Probenmaterial der Legierung CuNi1,5Si0,3 entnommen. Probenmaterial ausgewählter Zustände wurde im Labor bei verschiedenen Temperaturen ausgelagert. Für die Charakterisierung der Materialzustände wurden quasistatische Zugversuche durchgeführt, die elektrische Leitfähigkeit bestimmt, die Mikrohärte gemessen und das Gefüge anhand metallographischer Schliffe untersucht.

Translation: E. Engert

References / Literatur

[1] Weber, M.; Preußner, J.; Helm, D.; Eisenbart, M.; Pfeffer, K.; Klotz, U. E.: METALL2015, 3, 76–81Search in Google Scholar

[2] Bargel, H.-J.; Schulze, G.: Werkstoffkunde, VDI, Düsseldorf, 1994, Kapitel 1Search in Google Scholar

[3] Pfeffer, K.; Eisenbart, M.; Klotz, U. E.; Weber, M.; Preußner, J.; Helm, D.: METALL2013, 11, 500–503Search in Google Scholar

Received: 2017-12-21
Accepted: 2018-01-08
Published Online: 2018-03-06
Published in Print: 2018-03-15

© 2018, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Heat Treatment and Microstructural Contrasting on Low-Alloy Copper-Based Alloys
  7. Analysis, Modeling and Simulation of Tomographic Image Data for the 3D Microstructure of Electrode Material in Lithium-Ion Batteries
  8. Detailed Metallographic Analysis of the Surface Layer Structure of Carbonitrided Case-Hardening Steels after Varied Tempering Treatments
  9. Fretting Fatigue Cracking of a Center Guide Bolt Supporting the Combustion Chamber in a Heavy-duty Gas Turbine Engine
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
https://doi.org/10.3139/147.110500

Articles in the same Issue

  1. Contents/Inhalt
  2. Contents
  3. Editorial
  4. Editorial
  5. Technical Contributions/Fachbeiträge
  6. Heat Treatment and Microstructural Contrasting on Low-Alloy Copper-Based Alloys
  7. Analysis, Modeling and Simulation of Tomographic Image Data for the 3D Microstructure of Electrode Material in Lithium-Ion Batteries
  8. Detailed Metallographic Analysis of the Surface Layer Structure of Carbonitrided Case-Hardening Steels after Varied Tempering Treatments
  9. Fretting Fatigue Cracking of a Center Guide Bolt Supporting the Combustion Chamber in a Heavy-duty Gas Turbine Engine
  10. Meeting Diary/Veranstaltungskalender
  11. Meeting Diary
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