Co-extrusion of compound-cast AA7075/6060 bilayer billets at various temperatures

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review


A combination of dissimilar AA7075/6060 aluminum alloys benefits the advantages of high strength and good corrosion resistance in one hybrid component. Static compound casting using appropriate casting conditions can achieve intermetallic bonding at the interface of the core AA7075 and sleeve AA6060. The inhomogeneous bonding due to non-uniform thermal conditions during static compound casting can be eliminated by the following co-extrusion procedure. Direct hot extrusion of compound-cast AA7075/6060 bilayer billets at a temperature of 420, 450, and 480 °C is conducted to analyze the influence of extrusion temperature on the interfacial bonding. The evolution of the interfacial bonding properties at different extrusion temperatures of as-cast billets is depicted by light optical metallography and mechanical push-out test.

Original languageEnglish
Title of host publicationForming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity
EditorsGlenn Daehn, Jian Cao, Brad Kinsey, Erman Teekaya, Anupam Vivek, Yoshinori Yoshida
Number of pages9
Place of PublicationCham
PublisherSpringer International Publishing AG
Publication date2021
ISBN (print)978-3-030-75380-1
ISBN (electronic)978-3-030-75381-8
Publication statusPublished - 2021

Bibliographical note

Funding Information:
Acknowledgments The German Research Foundation (DFG) kindly supported this work (grant number BE5196/11-1 and VO-1487/25-1). The authors acknowledge the financial funding from the DFG.

Publisher Copyright:
© 2021, The Minerals, Metals & Materials Society.

    Research areas

  • Engineering - compound casting, Co-extrusion, Bon Strength