Publikationsdatum:
2012-07-04
Beschreibung:
Many different approaches have been proposed to simulate the nucleation and evolution of damage during the hot forming of steels. However, there is a lack of time-resolved, three dimensional quantification of the evolution of damage, a requirement for validation of the kinetic and morphological model predictions. One very significant industrial case is the hot forming of free-cutting steels (FCS), where small additions of heavy metal inclusions are added to enhance the machinability and surface quality of the steel. In this paper, we present the in situ ultra-fast synchrotron X-ray tomographic observations and quantification of FCS during hot deformation, including measurement of applied load. This allowed the correlation of strength to the different stages of the cracking process. The results are augmented with high spatial resolution interrupted studies. The interrupted tomographs enabled the quantification of the volume fraction, equivalent diameter, spatial distributi...
Print ISSN:
1757-8981
Digitale ISSN:
1757-899X
Thema:
Maschinenbau
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