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Publications in Scientific Journals:

A. Vieweg, E. Povoden-Karadeniz, G. Ressel, P. Prevedel, T. Wojcik, F. Mendez-Martin, A. Stark, J. Keckes, E. Kozeschnik:
"Phase evolution and carbon redistribution during continuous tempering of martensite studied with high resolution techniques";
Materials & Design, 136 (2017), 214 - 222.



English abstract:
Using high resolution techniques, such as, 3D atom probe tomography, transmission electron microscopy andsynchrotron radiation, the continuous tempering process of a 50CrMo4 steel is analyzed. Differences of continuous heating compared to isothermal holding at certain tempering temperatures are discussed. Focus is laid on indepth
characterization of phase development and carbon redistribution effects, such as, segregation and clustering.
The results of thiswork suggest that segregation is the dominant effect at lowtemperatures (b150 C),while cluster formation within these segregated areas is prominent at intermediate temperatures (150-250 C). Epsilon carbide is formed during continuous heating with off-stoichiometric chemical composition (270-350 C). It transforms finally into cementite (T N 350 C).

Keywords:
Tempering Precipitation kinetics In situ HEXRD 3D-APT Epsilon carbide Carbon redistribution


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.matdes.2017.09.065


Created from the Publication Database of the Vienna University of Technology.