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Livarna Gorica d.o.o. , Nova Gorica , Slovenia
Faculty of Natural Sciences and Engineering, University of Ljubljana , Ljubljana , Slovenia
Faculty of Natural Sciences and Engineering, University of Ljubljana , Ljubljana , Slovenia
Dimensional tolerances of semi-products for the automotive industry became extremely narrow,
and allow no deviations in the production process. In present research work the distortion
behaviour of C15E (1.1141) and 42CrMo4 (1.7225) steels during two common industrial heat
treatments (quenching and controlled heating and cooling) was studied by Navy C-ring test. As
expected, the most noticeable was the dissimilar distortion behaviour of testing steels after
quenching due to different final microstructure. Results from the present investigation prove, that
the most important factor for distortion after heat treatment are microstructure transformations.
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