Editorial for special issue on USTB–RWTH Aachen’s 40 years of collaboration

S.S. Li and H.W. Luo, Medium-Mn steels for hot forming application in the automotive industry, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 741. doi: https://doi.org/10.1007/s12613-020-2179-9

L. Wang, C.F. Dong, C. Man, Y.B. Hu, Q. Yu, and X.G. Li, Effect of microstructure on corrosion behavior of ultra-high strength martensite steel—A literature review, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 754. doi: https://doi.org/10.1007/s12613-020-2242-6

W. Bleck, New insights into the properties of high manganese steel, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 782. doi: https://doi.org/10.1007/s12613-020-2166-1

C.Y. Xu, C.W, R.Z. Xu, J.L. Zhang, and K.X. Jiao, Effect of Al₂O₃ on the viscosity of CaO–SiO₂–Al₂O₃–MgO–Cr₂O₃ slags, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 797. doi: https://doi.org/10.1007/s12613-020-2187-9

W. Xiao, Y.P. Bao, C. Gu, M. Wang, Y. Liu, Y.S. Huang, and G.T. Sun, Ultrahigh cycle fatigue fracture mechanism of high-quality bearing steel obtained through different deoxidation methods, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 804. doi: https://doi.org/10.1007/s12613-021-2253-y

Y.S. Yu, B. Hu, M.L. Gao, Z.J. Xie, X.Q. Rong, G. Han, H. Guo, and C.J. Shang, Determining role of heterogeneous microstructure in lowering yield ratio and enhancing impact toughness in high strength low alloy steel, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 816. doi: https://doi.org/10.1007/s12613-020-2235-5

C. Gu, W.Q. Liu, J.H. Lian, and Y.P. Bao, In-depth analysis of the fatigue mechanism induced by inclusions for high-strength bearing steels, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 826. doi: https://doi.org/10.1007/s12613-020-2223-9

L.Z. Jin and M.X. Niu, Micromorphology and safety properties of meager and meager-lean coal for blast furnace injection, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 774. doi: https://doi.org/10.1007/s12613-020-2104-2

X.F. Guo, S. Zaefferer, F. Archie, and W. Bleck, Hydrogen effect on the mechanical behaviour and microstructural features of a Fe–Mn–C twinning induced plasticity steel, Int. J. Miner. Metall., 28(2021), No. 5, p. 835. doi: https://doi.org/10.1007/s12613-021-2284-4

Y. Ma, R. Zheng, Z.Y. Gao, U. Krupp, H.W. Luo, W.W. Song, and W. Bleck, Multiphase-field simulation of austenite reversion in medium-Mn steels, Int. J. Miner. Metall., 28(2021), No. 5, p. 847. doi: https://doi.org/10.1007/s12613-021-2282-6

W.Q. Liu and J.H. Lian, Stress state dependence of dynamic strain aging: Thermal hardening and blue brittleness, Int. J. Miner. Metall., 28(2021), No. 5, p. 854. doi: https://doi.org/10.1007/s12613-021-2250-1

N. Hytönen, Z.Q. Que, P. Arffman, J. Lydman, P. Nevasmaa, U. Ehrnstén, and P. Efsing, Effect of weld microstructure on brittle fracture initiation in the thermally aged boiling water reactor pressure vessel head weld metal, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 867. doi: https://doi.org/10.1007/s12613-020-2226-6

J.-L. Zhang and Stefan Zaefferer, Influence of sample preparation on nanoindentation results of twinning-induced plasticity steel, Int. J. Miner. Metall., 28(2021), No. 5, p. 877. doi: https://doi.org/10.1007/s12613-021-2260-z

W.R. Wang, W. Qi, X.L. Zhang, X. Yang, L. Xie, D.Y. Li, and Y.H. Xiang, Superior corrosion resistance dependent laser energy density in (CoCrFeNi)₉₅Nb₅ high entropy alloy coating fabricated by laser cladding, Int. J. Miner. Metall. Mater., 28(2021), No. 5, p. 888. doi: https://doi.org/10.1007/s12613-020-2238-2