High-damping properties of Mn-Cu sintered alloys

Mikio Fukuhara; Fuxing Yin; Yoshiaki Ohsawa; Susumu Takamori

doi:10.1016/j.msea.2006.05.163

High-damping properties of Mn-Cu sintered alloys

Mikio Fukuhara, Fuxing Yin, Yoshiaki Ohsawa, Susumu Takamori

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

24 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 language	English
Pages (from-to)	439-443
Number of pages	5
Journal	Materials Science and Engineering A
Volume	442
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.msea.2006.05.163
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

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title = "High-damping properties of Mn-Cu sintered alloys",

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.",

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T1 - High-damping properties of Mn-Cu sintered alloys

AU - Fukuhara, Mikio

AU - Yin, Fuxing

AU - Ohsawa, Yoshiaki

AU - Takamori, Susumu

PY - 2006/12/20

Y1 - 2006/12/20

N2 - 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.

AB - 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.

KW - High damping alloys

KW - Martensitic transformation

KW - Mn-Cu alloys

KW - Twin boundaries

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