Grain Boundary Internal Friction of Ni and Ni–B Alloys

• Suto Hajime

  Department of Materials Science, Faculty of Engineering, Tohoku University

• Sato Shinji

  Department of Materials Science, Faculty of Engineering, Tohoku University

書誌事項

タイトル別名

• Grain Boundary Internal Friction of Ni and Ni–B Alloys

抄録

In order to investigate the solid solubility of B in Ni as a function of grain size, the high temperature internal friction of pure Ni and Ni–B alloys containing 0.0035, 0.0068 and 0.010 wt% B has been measured with particular attention to the grain boundary damping peaks. The electrical resistivity was also measured to determine the solubility. The results obtained are summarized as follows:<BR>(1) The solubility of B in single crystal Ni is given by C(at%)=0.59exp(−H⁄RT), H=65.6 kJ/mol.<BR>(2) The apparent solubility of B in polycrystalline Ni increases remarkably with decreasing grain size.<BR>(3) On the Q⁻¹−1⁄T curves of pure Ni, there are two peaks of grain boundary damping at about 470°C and about 670°C. By addition of 0.0035 wt% B, only one peak can be observed. The peak temperature of every Ni–B alloy used is about 550°C and its activation energy is about 330 kJ/mol.

収録刊行物

• Transactions of the Japan Institute of Metals

  Transactions of the Japan Institute of Metals 21 (2), 83-88, 1980

  社団法人 日本金属学会

キーワード

• General Engineering

詳細情報

• CRID: 1390282680094110336
• NII論文ID: 130003485819
• DOI: 10.2320/matertrans1960.21.83
• COI: 1:CAS:528:DyaL3cXktlSnsLs%3D
• ISSN: 24324701
• ISSN: 00214434
• Web Site: https://www.jstage.jst.go.jp/article/matertrans1960/21/2/21_2_83/_pdf
• 本文言語コード: en
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