純アルミニウム単結晶の加工硬化率と回復速度

  • 中島 英治
    九州大学大学院総合理工学研究科材料開発工学専攻
  • 河村 伸彦
    九州大学大学院生,現在:昭和電工株式会社秩父研究所
  • 栗下 裕明
    九州大学大学院総合理工学研究科材料開発工学専攻
  • 吉永 日出男
    九州大学大学院総合理工学研究科材料開発工学専攻

書誌事項

タイトル別名
  • Work-Hardening and Recovery Rates in Pure Aluminum Single Crystals during High-Temperature Deformation
  • ジュン アルミニウム タンケッショウ ノ カコウ コウカリツ ト カイフク ソ

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説明

In order to clarify the contribution of grain boundary effect on the work-hardening rate without recovery effect, h, and the recovery rate without work-hardening effect, r, these two parameters in pure aluminum single crystals have been measured and compared with those in aluminum polycrystals reported so far. The measurement has been carried out by applying the strain-rate change technique to the steady-state tensile deformation at temperatures from 523 K to 673 K and at shear strain rates from 1.2×10−5 s−1 to 4.6×10−4 s−1.<BR>It is found that h is approximately proportional to the inverse of stress and depends strongly on temperature. The stress exponent of r is about 3. The activation energy of r is about 2/3 of the activation energy of lattice self-diffusion in Al. These stress and temperature dependences of h and r are almost the same as those of the polycrystals.<BR>Therefore, it is concluded that the contribution of grain boundary effect to h and r is not large.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 50 (5), 441-448, 1986

    公益社団法人 日本金属学会

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