Fe-25Cr-C-B系共晶合金の組織と高温強度

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タイトル別名
  • Microstructure and High Temperature Strength of Fe-25Cr-C-B Eutectic Cast Alloys
  • Fe 25Cr C Bケイ キョウショウ ゴウキン ノ ソシキ ト コウオン キョウド

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抄録

  Compressive tests were conducted on Fe-25Cr-0C-2.2B, Fe-25Cr-2.2C-1.0B and Fe-25Cr-3.5C-0B eutectic alloys at temperatures up to 1073 K. The results show that the compressive strength of all the as-cast alloys was above 2000 MPa at room temperature and above 100 MPa even at 1073 K. The true stress-true strain curves of the Fe-25Cr-0C-2.2B and Fe-25Cr-3.5C-0B alloys show a large amount of plastic deformation, reflecting the iron matrix deformation. On the contrary, the Fe-25Cr-2.2C-1.0B alloy exhibited fracture immediately after the elastic limit. The compressive strength of the Fe-25Cr-0C-2.2B and Fe-25Cr-3.5C-0B alloys changed in destabilization heat treatment, due to the iron matrix transformation, but the strength of the Fe-25Cr-2.2C-1.0B alloy was only affected slightly by destabilization heat treatment. The effect of destabilization heat treatment more or less disappeared at temperatures above 873 K for each alloy specimen.

収録刊行物

  • 鋳造工学

    鋳造工学 73 (5), 311-317, 2001

    公益社団法人 日本鋳造工学会

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