Cu-Ti合金の時効におよぼすTi濃度の影響

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タイトル別名
  • Effects of Concentrations of Ti on the Ageing Processes of Cu-Ti Alloys
  • Cu-Ti ゴウキン ノ ジコウ ニ オヨボス Ti ノウド ノ エイキョウ

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Effects of 0.5, 1, 1.3, 2 and 4%Ti on the ageing characteristics of Cu-Ti alloys were investigated by microhardness measurement, electron microscopy observation and X-ray diffraction technique. The results are summarized as follows:<BR>(1) The shapes of the age hardening curves in the alloys containing more than 1.3%Ti, showed an abrupt increase at the very early stage of ageing. However, in the alloys containing 0.5 and 1%Ti, the incubation-like period were observed on the age hardening curves at the early stage.<BR>(2) For the Cu-(1.3∼4)%Ti alloys, fine precipitates, called the modulated structure, were observed in the very early stage of ageing. For the alloys containing less than 1%Ti, no precipitates were observed in the early stage of ageing, but coherent spherical particles appeared at random with progressing of ageing and then the number of particles increased.<BR>After the number of particles increased to the maximum, the particles coarsened according to a t1⁄3 law. And they became aligned along ⟨100⟩.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 38 (5), 446-451, 1974

    公益社団法人 日本金属学会

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