On the Properties of Cu-Al-Ni-Fe Alloys in Slowly Cooled Casting. (Nickel-Aluminium Bronze for Marine-Propeller Alloy, 4th Report)

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  • Cu-Al-Ni-Fe 4元系合金の徐冷鋳物の諸性質について
  • Cu-Al-Ni-Fe4ゲンケイ ゴウキン ノ ジョレイ イモノ ノ ショ セイシツ ニ ツイテ

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Abstract

The relationships between cooling rate, structures and mechanical properties in slowly cooled 9.7/4.7/5.3 cast nickel aluminium bronze are described. The relation between the proof stress depending on the rate of cooling, and the number of κ phases in unit area N is discussed. The following formula is approximately true and this relation could be explained in dealing with the nickel aluminium bronze as a precipitation-hardening alloy. σ_s \fallingdotseqK\sqrtN K: constant, N ≥1

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