種々の基地組織を持つ球状黒鉛鋳鉄のエロージョン摩耗特性

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タイトル別名
  • Erosion Characteristics of Ductile Iron with Various Matrix Structures
  • シュジュ ノ キチ ソシキ オ モツ キュウジョウ コクエン チュウテツ ノ

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説明

  Erosive wear tests were performed on austempered ductile iron (ADI), and ferritic ductile iron (FDI) and pearlitic ductile iron (PDI), using a shot blast machine. Erosion damage was measured by the removed material volume at impact angles between 10 and 90 deg. The mechanism of erosive wear, the effect of impact angles, and differnces in wear features of the specimens were discussed. The erosion rate of ADI is about 1/10-1/25 of FDI and PDI, showing that ADI has superior erosion resistance. The surface hardness of eroded ADI specimens increased up to HV 700 from the initial HV 350 after 600 s of blasting. The amount of retained austenite was measured as about 40 % before the test, but it was decreased by the transformation of austenite to martensite, giving the hardening effect on the surface and as a result, lowering the erosion rate. It was shown that ADI has excellent erosion resistance and it is expected to find wide application as a wear resistant material.

収録刊行物

  • 鋳物

    鋳物 66 (7), 489-494, 1994

    公益社団法人 日本鋳造工学会

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