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    • Indentation studies of alkali halides at elevated temperatures

      K Kishan Rao D B Sirdeshmukh

      Solid State Physics Volume 24 Issue 6 June 1985 pp 887-893

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      https://www.ias.ac.in/article/fulltext/pram/024/06/0887-0893

    • Keywords

       

      Mechanical properties; hardness; indentation; alkali halides

    • Abstract

       

      The hardness of NaCl and KCl crystals has been estimated from the lengths of dislocation rosette formed around indentation at various temperatures up to 400°C. The hardness decreases with increasing temperature. This is due to the softening of the crystals at elevated temperatures which results in the easy movement of dislocations. The results are discussed using a few available relations which connect hardness to temperature. Arms of indentation dislocation rosette are well defined up to 300°C but around 400°C the rosette pattern is spread over a circular region. A possible mechanism is discussed.

    • Author Affiliations

       

      K Kishan Rao1 D B Sirdeshmukh1

      1. Department of Physics, Kakatiya University, Warangal - 506009, India

    • Dates

       
      Published
      June 1985
      Manuscript received
      22 October 1984
      Manuscript revised
      12 March 1985

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