Ti-8%Al-4%Co合金の熱処理と常温機械的性質について

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タイトル別名
  • On the Heat Treatment and Mechanical Properties at Room Temperature of Ti-8%Al-4%Co Alloy
  • Ti-8パーセント Al-4パーセント Co ゴウキン ノ ネツ ショリ ト ジョウオン キカイテキ セイシツ ニ ツイテ

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説明

Some of the present authors have investigated the effects of heat treatment and structure on the mechanical properties of Ti-2∼8%Al-2∼8%Co ternary alloys. In view of the forgeability and mechanical properties, Ti-8%Al-4%Co alloy was singled out from these alloys and forged bars were prepared from an ingot of 60 kg. In this report, the microstructure and the mechanical properties at room temperature of Ti-8%Al-4%Co alloy for various heat treatments were investigated.<BR>The results obtained are as follows: (1) This alloy has good forgeability. (2) The alloy quenched from above 800°C and from 750°∼700°C has the α+β and the α type structure, respectively. (3) For room temperature use, the α+β structure has a good combination of strength and toughness. (4) In the alloy quenched from above 800°C followed by aging at 450°C, the tensile strength increases and the toughness decreases.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 31 (3), 218-222, 1967

    公益社団法人 日本金属学会

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