Influence of deformation during T10 treatment on microstructure/hardness/electrical conductivity of Cu-Cr alloy produced in nonprotected atmosphere

Authors: Hosseini, E.1; Habibollahzadeh, A.2; Erfanmanesh, M.2; Mostajabodave, H.2; Kazeminezhad, M.3

Source: Materials Science and Technology, Volume 25, Number 10, October 2009 , pp. 1283-1288(6)

Publisher: Maney Publishing

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Abstract:

Cu-1·5Cr alloy was successfully produced by a new method, composed of alloying via melting in a non-protected atmosphere followed by rapid cooling in a water cooled mould. The effects of deformation magnitude during T10 treatment on microstructure, electrical conductivity and hardness of alloy were also investigated. The results showed that cold work before age hardening treatment, especially in the range of 20-40% deformation, provides optimum electrical and mechanical properties, i.e. electrical conductivity of 70-85% International Annealed Copper Standard (IACS) and hardness of 160-180 HB. In addition, the cold work promotes a useful anisotropy in electrical and mechanical properties of Cu-1·5Cr alloy after aging treatment. A proposed design for a pilot plant is shown.

Keywords: CU-CR ALLOY; ELECTRICAL CONDUCTIVITY; HARDNESS; DEFORMATION; HEAT TREATMENT

Document Type: Research article

DOI: 10.1179/174328408X365810

Affiliations: 1: Department of Materials Science and Engineering, Engineering Faculty, Semnan University, Semnan, Iran; Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran 2: Department of Materials Science and Engineering, Engineering Faculty, Semnan University, Semnan, Iran 3: Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, Tehran, Iran

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