45%Cr附近のNi-Cr合金の組織変化について

DOI Web Site Web Site

書誌事項

タイトル別名
  • On the Structural Changes of Ni-Cr Alloys Containing About 45%Cr (Study on Ni-Cr Alloys, 2nd Report)
  • 45 Cr フキン ノ Ni-Cr ゴウキン ノ ソシキ ヘンカ ニ ツイテ

この論文をさがす

抄録

Some complex structural changes in the alloys containing about 45%Cr, which had been considered as having the simple solubility change of Ni-rich solid solution, were found and discussed. When the alloys containing 43∼51%Cr are slowly cooled from 1250°C, both the fine granular structure and the lamellar structure are seen in the Ni-rich solid solution. The former structure corresponds to the phase change in the Ni solid solution at relatively higher temperatures and the latter structure corresponds to the phase change at lower temperatures, respectively. The alloys were cooled to several levels of temperature from 1050°C and then held at each of them, and the phase changes during the holdings were measured dilatometrically. The isothermal transformation was found to take place in the form like the S-curve of carbon steel, and it was also found that the small nose above 940°C corresponds to the fine granular precipitation and the large nose below 940°C corresponds to the formation of the lamellar one. The growth of the lamellar precipitation was conspicuous in 45%Cr, and at 860°C irrespective of the Cr-concentration of the alloys. However, it could not be clarified yet whether these phase changes are caused by the existence of the eutectoidal change of the Ni solid solution or not.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (12), 814-818, 1960

    公益社団法人 日本金属学会

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ