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Microstructural changes accompanying high strain amplitude fatigue tests on a multiphase medium carbon microalloyed steel
, Gouthama, Sangal S., A. Padmanabhan K.
Published in Springer Science and Business Media LLC
2005
Volume: 40
   
Issue: 2
Pages: 499 - 502
Abstract

The microstructural changes accompanying high strain amplitude fatigue tests on multiphase microalloyed steel were analyzed using transmission electron microscopy (TEM). A two-step cooling and annealing (TSCA) treatment was adopted to produce the ferrite-bainite-martensite (F-B-M) microstructure. The evidence for usually observed dislocation processes that lead to fatigue softening was revealed by TEM. The microstructural modification that can play an independent role in determining the mechanical response, dynamic recovery induced reorientation of ferrite grain is also elaborated.

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PublisherData powered by TypesetSpringer Science and Business Media LLC
Open AccessNo