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 language | English |
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Pages (from-to) | 439-443 |
Number of pages | 5 |
Journal | Materials Science and Engineering A |
Volume | 442 |
Issue number | 1-2 SPEC. ISS. |
DOIs | |
Publication status | Published - 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