焼入および加工誘起マルテンサイト変態量と電気抵抗率変化について

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タイトル別名
  • Relationship between the Electrical Resistivity and the Volume Fraction of Martensite Induced by Quenching and Deformation
  • ヤキイレ オヨビ カコウ ユウキ マルテンサイト ヘンタイリョウ ト デンキ

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説明

A logarithmic mixture rule expresses the relationship between the electrical resistivity and the volume fraction of the lenticular martensite produced in quench and sub-zero treatments and also in tensile deformation on an Fe-27.59Ni-0.28C(mass%) steel. The deviation coefficient varying between the negative and the positive unity in the expression is mainly discussed on the amount of plastic strain and the micro-deformation behaviour of the austenite matrix. The volume fraction of the deformation induced martensite is examined to be suitably represented by both the modified relation of the velocity of an autocatalytic chemical reaction (VACR) and the relation of the shear band intersection mechanism (SBIM), and here we use the modified relation of VACR from the fact that the transformation in this steel is more or less of the burst type and that this needs two coefficients to be determined compared with three in the other. The mathematical relationship between the plastic strain and the change in the electrical resistivity deduced from the previous two equations gives satisfactorily the experimental results in this study.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 49 (5), 313-319, 1985

    公益社団法人 日本金属学会

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