銅合金の導電率に及ぼす冷間圧延加工の影響

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  • 隅野 裕也
    株式会社神戸製鋼所　アルミ・銅事業部門　長府製造所　銅板工場　銅板研究室
  • 野村 幸矢
    株式会社神戸製鋼所　アルミ・銅事業部門　長府製造所　銅板工場　銅板研究室
  • 坂本 浩
    株式会社神戸製鋼所　アルミ・銅事業部門　長府製造所　銅板工場　銅板研究室

書誌事項

タイトル別名
  • Effects of Cold Rolling on Electrical Conductivity Behavior of Cu Based Alloy
  • ドウ ゴウキン ノ ドウデンリツ ニ オヨボス レイカン アツエン カコウ ノ エイキョウ

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説明

<p>Changes in electrical conductivity and mechanical characteristics, after cold rolling up to a maximum cold working ratio of 80％, were investigated for a CuCrTi alloy, Corson copper alloy and C2600. Electrical conductivity of all alloys decreased with increasing cold rolling working ratio. The drop in electrical conductivity was different among the alloys. In the case of C2600, it was about 3％ IACS, while in the case of CuCrTi alloy, the drop was about 8％ IACS. Changes in volume resistivity were investigated while maintaining a temperature of 300℃, and in the results, C2600 exhibited a trend thought to be recovery of processing strain. With CuCrTi alloy, on the other hand, there was no change in volume resistivity. The results of TEM observation of internal structure showed a trend of reduction due to rolling of Cr–based precipitate, suggesting that resolution of Cr–based precipitate is one cause of the drop in electrical conductivity.</p>

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