めっき粉末を用いたＦｅ‐Ｃｕ‐Ｎｉ焼結合金の機械的性質

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  • Mechanical Properties of Fe-Cu-Ni Alloys Sintered with Plated Powder
  • メッキ フンマツ オ モチイタ Fe Cu Ni ショウケツ ゴウキン ノ キ

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Mechanical properties of Fe-Cu-Ni alloys sintered by using the iron powder plated with nickel and copper were investigated. These sintered alloys showed higher tensile strength and elongation than those of conventional Fe-Cu-Ni alloys sintered with mixed powder. Values of the tensile strength and the elongation of these sintered alloys can be altered in wide range by heat treatments after sintering, that is, quenching and aging. Also it can be expected that the tensile strength of the same level as the Fe-Cu-Ni wrought materials, and the elongation of two times larger than that of the wrought alloys are attainable, when the porosity of these sintered alloys is reduced to several per cent.<BR>The sintered alloys showed the microstructure consisted of two regions. The interglanular region where copper and nickel homogeneously diffused forms a kind of skeleton of Fe-Cu-Ni alloy. However, the inside region of large iron particles remains as pure iron after sintering. This composite structure gives the high tensile strength and the large ductility of Fe-Cu-Ni alloys sintered with plated powder.

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