Studies on Mechanical Properties, Heat-treatment Characteristics and Oxidation Behavior of Zirconium Base Binary Alloys

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  • Aoki Shigeo
    Central Research Laboratory, The Furukawa Electric Co. Ltd.
  • Tarora Isao
    Central Research Laboratory, The Furukawa Electric Co. Ltd.

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  • Zr基2元合金の機械的性質，熱処理性および高温酸化について
  • Zrキ 2ゲン ゴウキン ノ キカイテキ セイシツ , ネツ ショリセイ オヨビ コウオン サンカ ニ ツイテ

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Abstract

The mechanical properties, the change of hardness and structure by heat-treatment, and the oxygen absorption at elevated temperature of various kinds of Zr base binary alloys containing Cu, Ni, Fe, Al, Cr, Ti, Sn, Bi, Sb or Mo, have been studied. The results obtained are summarized as follows: (1) The strength and workability of Zr-Ni, Zr-Fe, Zr-Cr and Zr-Mo alloys are excellent. (2) Heat-treatment is effective in improving the mechanical properties of Zr-Mo Alloy. (3) Alloys having eutectoid reaction undergo martensite transformation, when water-quenched from β-phase. (4) Zr-Al, Zr-Ti and Zr-Sb alloys show very large oxygen absorption during the first 7 hrs of reaction at 750°C in dry air, while the oxygen adsorption in Zr-Cu, Zr-Ni, Zr-Fe and Zr-Cr alloys under these conditions is small and is much less than in unalloyed Zr.

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