Some properties of Al-Pb-Cu sintered alloys

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  • Ａｌ‐Ｐｂ‐Ｃｕ焼結合金の諸性質
  • Al Pb Cu ショウケツ ゴウキン ノ ショ セイシツ

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Abstract

The basic properties of sintered Al-10% Pb-1-6% Cu alloys such as dimensional change, sintered density, hardness and radial crushing strength were examined. The compacts expand during sintering at 540°to 610°C in the purified hydrogen atomsphere because of pore generation at the eutectic temperature of the Al-Cu system and formation of a liquid Pb phase. This expansion shall also be considered from the viewpoint of evolution and expansion of gases absorbed in the liquid phase. The suitable Cu content 4% and the optimum temperature and time for sintering respectively about 580°C and 2hr are recommended on the basis of the combination of basic properties of the alloys sintered under pressure 1ton/cm2.

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