Journal of Materials Science

, Volume 24, Issue 4, pp 1257–1262 | Cite as

TEM studies of strain-induced martensitic formation in fatigued Fe-18Mn alloy

  • S. C. Tjong
  • C. C. Hung
  • N. J. Ho
Papers
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Accepted:

Abstract

Austenitic Fe-18Mn alloy was cyclically deformed at various total strain amplitudes. The structural changes induced by cyclic straining in Fe-18Mn alloy were investigated by transmission electron microscopy. At a low strain amplitude of 0.4%, the formation ofε-martensite associated with deformation twins and stacking faults was observed in this alloy. As the applied strain amplitude was increased to 1.0%,α′-martensite embryos were induced in the alloy investigated. These embryos coalesce into a lath structure upon subsequent cyclic deformation.

Keywords

Fatigued Transmission Electron Microscopy Martensite Strain Amplitude Total Strain 
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Copyright information

© Chapman and Hall Ltd. 1989

Authors and Affiliations

  • S. C. Tjong
    • 1
  • C. C. Hung
    • 1
  • N. J. Ho
    • 1
  1. 1.Institute of Materials Science and EngineeringNational Sun Yat-Sen UniversityKaohsiungTaiwan

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