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Metallurgical and Materials Transactions A

, Volume 49, Issue 11, pp 5235–5240 | Cite as

Impulse Excitation Internal Friction Study of Retained Austenite in Ferrous Martensite

  • Ji Hoon Kim
  • Yu Na Ju
  • Singon Kang
  • Bruno C. De Cooman
Communication
  • 93 Downloads

Abstract

Internal friction (IF) measurements were conducted using ferrous lath martensite specimens with different retained austenite fractions. While a distinctive Snoek-Kê-Köster (SKK) peak was detected in the IF spectra, the peak shape did not conform to the peak shape observed for fully martensitic steel. Peak analysis suggests that the peak shape is related to the overlap of the SKK peak with a Finkelstein–Rosin peak, additional Debye-type peak related to the retained austenite.

Notes

The authors gratefully acknowledge the support of the POSCO Technical Research Laboratories (South Korea).

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  • Ji Hoon Kim
    • 1
  • Yu Na Ju
    • 1
  • Singon Kang
    • 2
  • Bruno C. De Cooman
    • 1
  1. 1.Graduate Institute of Ferrous TechnologyPohang University of Science and TechnologyPohangRepublic of Korea
  2. 2.Department of Materials Science and EngineeringDong-A UniversityBusanRepublic of Korea

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