Paper Titles
Effect of Thermal Cycling (γ<->ε) on Martensitic Transformation Kinetics and Damping Capacity of Fe –17mass%Mn Alloy
p.59
Susceptibility of Damping Behavior to the Solidification Condition in the As-Cast M2052 High-Damping Alloy
p.67
Effect of Chromium Addition on Damping Capacity, Mechanical Property, and Corrosion Resistance of Fe-18%Mn Alloy
p.73
Different Damping Dependences on Volume Fractions of Thermal and Deformation-Induced ε Martensites in an Fe-Mn Alloy
p.79
Influences of Si and Co Addition on Microstructure and Damping Capacity of Fe-Mn Alloy
p.85
Fe-Cr-Mn-(Co) High Damping Stainless Alloy (HIDAS)
p.91
The Resonant Vibration Fracture Characteristics of Al-xZn Alloy and Mg-xAl-Zn Alloy
p.95
Low-Frequency High-Temperature Internal Friction in Ti-13Nb-13Zr Alloy
p.103
Damping Behaviors of the Commercially Pure Al Prepared by ECAP
p.109

Influences of Si and Co Addition on Microstructure and Damping Capacity of Fe-Mn Alloy

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Abstract:

Microstructures and damping properties have been investigated in Fe-23%Mn-(0~2)%Si and Fe-23%Mn-(0~2)%Co alloys, based on experimental results from metallography, X-ray diffractometry and vibration test in a flexural mode. The amount and number density of ε martensite are increased with an increase in Co content, resulting in the improvement of damping capacity. For the same ε martensite content, the higher the Co content, the greater the damping capacity. On the contrary, an addition of Si affects to decrease the amount and number density of ε martensite, giving rise to a decay of damping capacity. The decreased ε martensite content by the addition of Si would be attributed to an increase in critical driving force for the γ→ε martensitic transformation by solution hardening effect.

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Periodical:

Key Engineering Materials (Volume 319)

Pages:

85-90

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.319.85

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Online since:

September 2006

Authors:

Joong Hwan Jun, Young-Kook Lee, Jeong Min Kim, Ki Tae Kim, Woon Jae Jung

Keywords:

Co, Damping Capacity, Fe-Mn Alloys, Silicon, ε Martensite

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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