Ternary high-strength Cu-based in-situ metal matrix composites

Raabe, D.

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Ternary high-strength Cu-based in-situ metal matrix composites

Raabe, D.(2004). Ternary high-strength Cu-based in-situ metal matrix composites. Düsseldorf, Germany: MPI für Eisenforschung GmbH.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-671D-9 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-671F-5

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Raabe, D.¹, Author

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1Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863381

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Abstract: Cu and most high melting body centered cubic (bcc) transition metals have negligible mutual solubility by practical means. Fibre or ribbon reinforced in-situ metal matrix composites (MMCs) can thus be processed by large degrees of deformation, e.g. by cold rolling or wire drawing of cast ingots. These Cu-bcc alloys are of considerable interest since after heavy deformation very high tensile strength combined with good electrical conductivity can be achieved. Furthermore, fundamental aspects such as the origin of the extreme strength attract much attention. In the last years substantial efforts were made to investigate and optimize alloys based on the binary systems of Cu with Nb (bcc) or Cr (bcc). Additional investigations addressed in-situ MMCs that are based on the eutectic system of Cu and Ag (fcc). While in the first case the fibers are formed by the elongated body centered cubic phase (Nb, Cr), in the second case Ag precipitations were used to increase the matrix strain and/or to form additional fibers after wire drawing or rolling. The present Max-Planck project deals with the experimental investigation and theoretical prediction of a new generation of composites that combine both mechanisms. These alloys which have a high electrical conductivity and a high strength are based on the ternary systems Cu-Nb-Ag and Cu-Cr-Ag.

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Language(s): eng - English

Dates: Date issued: 2004

Publication Status: Issued

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Publishing info: Düsseldorf, Germany : MPI für Eisenforschung GmbH

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Identifiers: eDoc: 117383

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