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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/034/07/1465-1470

    • Keywords

       

      Cu–Cr–Zr; wear; ageing treatment; electrical conductivity.

    • Abstract

       

      In this study, the effect of ageing processes on the wear behaviour and electrical conductivity was investigated. Prior to solid solution heat treatment at 920°C and ageing at 470°C, 500°C and 530°C for 1 h, 2 h and 3 h, respectively, the prepared samples were homogenized at 920°C for 1 h. After the ageing processes, all samples were characterized in terms of electrical conductivity, scanning electron microscope (with energy dispersive X-ray spectrum (EDS)) and hardness (HV5). In wear tests, pin-on-disc type standard wearing unit was used. As a result, starting from 1 h aged specimens, orderly increase of electrical conductivity was defined. From EDS analyses it was observed that Cr rate increases as precipitates grow. With increase of Cr rate there was also a defined rise of electrical conductivity. From the wear tests, it was observed that the least wear loss was in Cu–Cr–Zr alloy aged at 500°C for 2 h and the most wear loss was in specimens aged at 530°C for 2 h. Furthermore, it was observed that the friction coefficient values resulting from wear rate were overlapped with hardness results and there is a decrease tendency of friction coefficient as wear distance increases.

    • Author Affiliations

       

      Ibrahim Sağlam1 Dursun Özyürek2 Kerim Çetinkaya1

      1. Technical Education Faculty, Department of Machine Education, Karabuk University, Karabük 078100, Turkey
      2. Department of Metal Education, Karabuk University, Karabük 078100, Turkey

    • Dates

       
      Published
      December 2011
      Manuscript received
      5 December 2009
      Manuscript revised
      7 September 2010

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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