MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Damping Capacity of Co-Mn System
Young-Seob SeoYoung-Kook LeeChong-Sool Choi
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2003 Volume 44 Issue 5 Pages 931-934

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Abstract

The damping capacity of Co–Mn system which undergoes fcc → hcp martensitic transformation has been studied as a function of ε volume fraction using an inverted torsional pendulum. The damping capacity increases linearly with increasing ε volume fraction regardless of manganese content, and is represented by δ=0.05+0.27fε where δ is the damping capacity in logarithmic decrement of Co–Mn system and fε is the ε volume fraction. The main damping mechanism of Co–Mn system containing ε martensite is the movement of stacking fault boundaries in ε martensite plates.

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© 2003 The Japan Institute of Metals and Materials
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