Effect of {epsilon} martensite content on the damping capacity of Fe-17% Mn alloy

Journal Article · Tue Oct 01 04:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00231-X· OSTI ID:382482

Lee, Y K; Jun, J H; Choi, C S ^[1]

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1. Yonsei Univ., Seoul (Korea, Republic of). Dept. of Metallurgical Engineering

In previous studies the authors have shown that a Fe-17% Mn alloy possesses the highest damping capacity in the Fe-Mn system. It was suggested that the damping is related to the amount of {epsilon} martensite. Thus the objective of this study has been to investigate the effect of {epsilon} content on the damping capacity of Fe-17% Mn alloy. To increase the amount of {epsilon} martensite, two different heat treatments were applied: One was cooling to various temperatures between room temperature and {minus}196 C, and the other was cyclic transformation, {gamma}{leftrightarrow}{epsilon}, between room temperature and 255 C above A{sub f}. The two heat treatments led to the different dependences of damping capacity on {epsilon} martensite content. The first heat treatment showed that the damping capacity is gradually increased with increasing {epsilon} martensite volume fraction, while the second heat treatment showed that the damping capacity is steeply decreased with increasing {epsilon} martensite content. In the present paper, the reason has been elucidated clearly.

• OSTI ID: 382482
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 7 Vol. 35; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CASTING
CHEMICAL COMPOSITION
DAMPING
DILATOMETRY
HEAT TREATMENTS
IRON ALLOYS
MANGANESE ALLOYS
PHASE TRANSFORMATIONS
QUENCHING
ROLLING
SAMPLE PREPARATION
THERMAL CYCLING
TORSION
X-RAY DIFFRACTION