Han, J.; Kang, S.-H.; Lee, S.-J.; Lee, Y.-K.: Fabrication of bimodal-grained Al-free medium Mn steel by double intercritical annealing and its tensile properties. Journal of Alloys and Compounds 681, pp. 580 - 588 (2016)
If manganese nodules can be mined in an environmentally friendly way, the critical metals needed for the energy transition could be produced with low CO2 emissions