M. Li1,2,*, D.H. Li3, Y. Rae1, W. Sun1
The International Conference on Computational & Experimental Engineering and Sciences, Vol.24, No.1, pp. 1-2, 2022, DOI:10.32604/icces.2022.08759
Abstract In order to better understand the physical process of deformation and cyclic softening a 12% Cr
martensitic stainless steel FV566 has been cyclically tested at high temperature in strain control.
Increase in temperature was found to increase the cyclic life, softening rate and viscous stress
magnitude. An increase in the dwell time led to the acceleration of the material degradation. The
microstructure changes and dominating deformation mechanisms were investigated by means of
scanning electron microscopy, electron backscatter diffraction and transmission electron
microscopy. The results have revealed a gradual sub-grain coarsening, transformation of lath
structure into fine equiaxed sub-grains, and misorientation… More >
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