The Effect of Small Stresses on The Kinetics of The Bainite Transformation
P. H. Shipway and H. K. D. H. Bhadeshia
Abstract
Experiments have been conducted in which bainite is allowed to
grow under the influence of an externally applied stress of
magnitude less than the yield strength of austenite. By
monitoring the transformation strains along two orthogonal
directions, it has been possible to demonstrate that the stress
in general accelerates the overall transformation kinetics,
particularly at high transformation temperatures, where the
chemical driving force for transformation is relatively small.
An acceleration of transformation at temperatures just above
the martensite start temperature has been confirmed, even in
the absence of an externally applied stress. The results are
interpreted in terms of the mechanism of the bainite
transformation in steels.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS
PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, Vol.201, No.1-
2, pp.143-149
Bainitic Phase Transformations
Movies about Martensite and Bainite
