High-damping properties of Mn-Cu sintered alloys

Mikio Fukuhara, Fuxing Yin, Yoshiaki Ohsawa, Susumu Takamori

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The mechanical damping of manganese-rich Mn-Cu sintered alloys were investigated and compared to that of M2052 cast alloy. The damping of the sintered alloys consisting of α-Mn and γ-MnCu phases is of the order of 10-1 and insensitive to the frequency and temperature. Single phase γ-MnCu alloys, prepared by quenching from 1123 K, show two damping peaks; the large main peak is due to the twin boundaries and the small sub-peak is due to the fct ↔ fcc phase transformation. These peaks are larger than those observed for the M2052 alloy. The damping of Mn-Cu alloys aged at 723 K is insensitive to temperature.

Original languageEnglish
Pages (from-to)439-443
Number of pages5
JournalMaterials Science and Engineering A
Volume442
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Dec 20

Keywords

  • High damping alloys
  • Martensitic transformation
  • Mn-Cu alloys
  • Twin boundaries

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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