@article{Gavriljuk_Theisen_Tyshchenko_Sirosh_Kortmann_2015, title={A concept for deep cryogenic treatment of tool steels}, volume={3}, url={https://icscm.ub.rub.de/index.php/ICSCM/article/view/407}, DOI={10.13154/icscm.3.2015.236-244}, abstractNote={A short review of experimental data about the effect of deep cryogenic treatment,<br />DCT, on the abrasive wear of tool steels is presented along with available hypotheses. Using<br />Mössbauer spectroscopy, X-ray diffraction, mechanical spectroscopy and transmission electron<br />microscopy, it is shown that the isothermal martensitic transformation proceeds in the course of<br />DCT. Moreover, the softness of the virgin isothermal martensite initiates the plastic deformation<br />during martensitic deformation, which results in the partial removal of carbon atoms from the solid<br />solution by the gliding dislocations. This effect eliminates the precipitation of the ε(η)-carbide<br />during subsequent tempering, shifts cementite precipitation towards higher temperatures and<br />delays precipitation of special carbides at temperatures of secondary hardness. Thus, the<br />precipitation potential of the γ solid solution is preserved and can be realized during the usage of<br />tools increasing thereby the tools life. Based on the obtained results, a new concept of DCT is<br />developed and the correction of its technology to the temperature range of the isothermal<br />martensitic transformation is proposed.}, journal={International Conference on Stone and Concrete Machining (ICSCM)}, author={Gavriljuk, V. G. and Theisen, W. and Tyshchenko, A. I. and Sirosh, V. A. and Kortmann, A.}, year={2015}, month={Nov.}, pages={236–244} }