A Study of the Dispersion-Strengthening in Nickel-Zirconia Composite Materials

• Sastry D. H.

  The Materials Research Group, Department of Metallurgy, Indian Institute of Science

• Vasu K. I.

  The Materials Research Group, Department of Metallurgy, Indian Institute of Science

抄録

The low-temperature deformation behaviour of nickel containing up to 4 volume per cent zirconia is investigated by employing tensile tests and differential-stress creep experiments. At a given strain, the activation area decreases with increasing volume fraction of the dispersoid. The data on flow stress are not in quantitative agreement with the Orowan model for initial yielding and the Fisher-Hart-Pry mechanism for strain hardening. It is thought that the increase in flow stress and work hardening rate for the alloys may arise from the high initial dislocation density and its rapid increase with strain. The rate-controlling mechanism for deformation of zirconia-dispersed nickel appears to be the thermally activated intersection of dislocations.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 12 (6), 405-409, 1971

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390001205117152256
• NII論文ID: 130003485104
• DOI: 10.2320/matertrans1960.12.405
• COI: 1:CAS:528:DyaE38Xmt1entg%3D%3D
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/12/6/12_6_405/_pdf
• 本文言語コード: en
• データソース種別:
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