ＡＣ４ＣＨアルミニウム合金鋳物の機械的性質に及ぼす熱処理の影響

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タイトル別名
  • Effect of heat treatment on the mechanical properties of AC4CH casting alloy.
  • AC4CH アルミニウム ゴウキン イモノ ノ キカイテキ セイシツ ニ オヨ

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抄録

Age hardening process of the AC4CH casting alloy solution treated at 843K was investigated mainly in view of aging temperatures. About 5 to 10% improvement of the tensile properties were obtained for the aging treatment at 418K for longer aging time as compared with those of the alloys heat treated with the conventional conditions. The percent elongation to the fracture and the absorbed energy, however, were not effectively improved. Reasonable correspondence between 0.2% proof stress and the specific resistance ratio were obtained. The proof stress was higher for the specimens aged at lower temperatures, although the resistance ratios were identical. The calculated m values of the Johnson-Mehl's equation for the precipitating particles were different for higher and lower temperatures, suggesting that the growth behavior of the particles was elassified into two types.

収録刊行物

  • 軽金属

    軽金属 43 (11), 612-617, 1993

    一般社団法人 軽金属学会

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