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000474253 1001_ $$0P:(DE-HGF)0$$aGramlich, Alexander$$b0$$eCorresponding author
000474253 245__ $$aTempering and Intercritical Annealing of Air‐Hardening 4 wt% Medium Manganese Steels
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000474253 500__ $$aThe synchrotronhigh-energy X-ray diffraction (HEXRD) measurements were conducted atthe Powder Diffraction and Total Scattering Beamline P02.1 of PETRA III atDESY (Proposal No.: I-20191072), a member of the Helmholtz Association(HGF), which is gratefully acknowledged. Dr. Wenwen Song and Dr. Yan
000474253 520__ $$aThe mechanical properties after tempering and intercritical annealing of medium manganese steels with 4 wt% Mn for forging applications are presented. After forging with subsequent air cooling, heat treatments were performed, specifically tempering from 250 and 450 °C and intercritical annealing between 600 and 675 °C. Tensile properties, Charpy V-notch impact toughness, and hardness were determined and compared with microstructural features characterized by metallography and synchrotron measurements, leading to the classification of six different heat treatment stages for medium manganese steels. Furthermore, the effects of different alloying additions (boron 0.0016–0.0057 wt%, molybdenum 0.2 wt%, and aluminum 0.5 wt%) are discussed with respect to the mechanical properties. It is shown that boron increases the impact toughness more effectively in the tempering regime, while the molybdenum alloyed samples exhibit higher toughness after intercritical annealing. Most of the materials and heat treatment states follow the inverse relationship between toughness and strength, while the aluminum alloyed samples show a superior toughness after tempering.
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000474253 7001_ $$0P:(DE-H253)PIP1015377$$aBleck, Wolfgang$$b1
000474253 773__ $$0PERI:(DE-600)2148555-0$$a10.1002/srin.202100180$$gVol. 92, no. 11, p. 2100180 -$$n11$$p2100180$$tSteel research international$$v92$$x0177-4832$$y2021
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