Application of damping mechanism model and stacking fault probability in Fe-Mn alloy

Journal Article · Sun Jun 15 00:00:00 EDT 2008 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2007.05.023· OSTI ID:21140727

Huang, S K; Wen, Y H ^[1]; Teng, J; Ding, S ^[1]; Xu, Y G ^[1]

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1. School of Manufacturing Science and Engineering, Sichuan University, Chengdu, Sichuan 610065 (China)

In this paper, the damping mechanism model of Fe-Mn alloy was analyzed using dislocation theory. Moreover, as an important parameter in Fe-Mn based alloy, the effect of stacking fault probability on the damping capacity of Fe-19.35Mn alloy after deep-cooling or tensile deformation was also studied. The damping capacity was measured using reversal torsion pendulum. The stacking fault probability of {gamma}-austenite and {epsilon}-martensite was determined by means of X-ray diffraction (XRD) profile analysis. The microstructure was observed using scanning electronic microscope (SEM). The results indicated that with the strain amplitude increasing above a critical value, the damping capacity of Fe-19.35Mn alloy increased rapidly which could be explained using the breakaway model of Shockley partial dislocations. Deep-cooling and suitable tensile deformation could improve the damping capacity owning to the increasing of stacking fault probability of Fe-19.35Mn alloy.

• OSTI ID: 21140727
• Journal Information: Materials Characterization, Vol. 59, Issue 6; Other Information: DOI: 10.1016/j.matchar.2007.05.023; PII: S1044-5803(07)00212-4; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
COOLING
DAMPING
DEFORMATION
DISLOCATIONS
MANGANESE ALLOYS
MARTENSITE
MICROSCOPES
MICROSTRUCTURE
PROBABILITY
SCANNING ELECTRON MICROSCOPY
STACKING FAULTS
STRAINS
X-RAY DIFFRACTION