Acoustic characteristics of high damping Mn73Cu 20Ni5Fe2 alloy

M. Fukuhara; F. Yin; K. Kawahara

doi:10.1002/pssa.200306737

Acoustic characteristics of high damping Mn₇₃Cu ₂₀Ni₅Fe₂ alloy

M. Fukuhara, F. Yin, K. Kawahara

New Industry Creation Hatchery Center (NICHe)

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

13 Citations (Scopus)

Abstract

The acoustic characteristics for high damping Mn₇₃Cu ₂₀Ni₅Fe₂ (M2052) alloy were investigated in terms of frequency-dependent complex dynamics, using an ultrasonic pulse method. The longitudinal and transverse waves show maximum decrements of about 2 and 1.8 at around 1.8 and 0.8 MHz, respectively, derived from a single relaxation process. Frequency dispersion leads to increase in dynamic modulus and delay in phase, suggesting growth (microkinking) of microtwin phases analogous to the stretching by micro-Brownian rotation in rubbers.

Original language	English
Pages (from-to)	454-458
Number of pages	5
Journal	Physica Status Solidi (A) Applied Research
Volume	201
Issue number	3
DOIs	https://doi.org/10.1002/pssa.200306737
Publication status	Published - 2004 Feb

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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AB - The acoustic characteristics for high damping Mn73Cu 20Ni5Fe2 (M2052) alloy were investigated in terms of frequency-dependent complex dynamics, using an ultrasonic pulse method. The longitudinal and transverse waves show maximum decrements of about 2 and 1.8 at around 1.8 and 0.8 MHz, respectively, derived from a single relaxation process. Frequency dispersion leads to increase in dynamic modulus and delay in phase, suggesting growth (microkinking) of microtwin phases analogous to the stretching by micro-Brownian rotation in rubbers.

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