The Damping Behavior of Ni Added Mn-Cu Damping Alloys

• Yin Fuxing

  National Institute for Materials Science

• Nagai Kotobu

  National Institute for Materials Science

• Watanabe Kenji

  National Institute for Materials Science

• Kawahara Kohji

  National Institute for Materials Science

書誌事項

タイトル別名

• Damping Behavior of Ni Added Mn Cu Damping Alloys

抄録

The temperature and frequency dependent damping behavior of Ni added Mn–Cu alloys were investigated. Ni addition not only increased the magnitude of the phase-transformation damping peak, but also decreased its frequency dependence. A decreased transformation temperature was found in the Ni added Mn–Cu alloys under the same treating condition, which suggested a retarding effect of Ni on the decomposition of γ_Mn phase during the slow-cooling process. The characteristic twin-boundary damping peak of Mn–Cu alloys was enlarged and broadened with the addition of Ni. According to the relaxation damping models the twin-boundaries in Ni added alloys had the larger activation energy, and also exhibited a broader distribution of relaxation time during the stress induced movement. In Ni added Mn–Cu alloys, the FCT γ_Mn phase showed a larger axis ratio, c⁄a and the Cu-rich γ_Mn phase coexisting with the FCT phase showed the similar lattice constants at ambient temperature. These microstructural features in Ni added Mn–Cu alloys might contribute to the improved damping behavior of the twin-boundary damping peak.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 44 (9), 1671-1674, 2003

  公益社団法人 日本金属学会

キーワード

• manganese-copper damping alloy
• damping capacity
• Young’s modulus
• twin-boundary
• phase transformation

詳細情報

• CRID: 1390001204247590528
• NII論文ID: 130004452243
• NII論文ID: 10011914336
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.44.1671
• COI: 1:CAS:528:DC%2BD3sXos1GlsLo%3D
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 6691601
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6691601
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/44/9/44_9_1671/_pdf
• 本文言語コード: en
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