The high entropy design rules can additionally consider interstitial alloying elements, specifically solute C. The original high entropy or respectively multi-component alloy concepts can serve as a starting point for designing compositionally complex yet non-equiatomically proportioned Fe-based Higher strength values require larger volume fractions of B2 particles, yet only at a significant expense of ductility, due to the intrinsically brittle nature of cm3 g−1 for an alloy (referred to as high–specific strength steels (HSSSs)).This mechanism leads to very high specific strength values of up to 233 MPa The uniformlyĭistributed hard B2 particles enable pronounced local strain hardening, since the dislocations must bow out and bypass them, leaving additional dislocation loops around the particles behind, anĮffect referred to as Orowan strengthening. Mechanical properties, non-shearable incoherent B2 (ordered body-centered cubic) particles, instead of kappa-carbides, have been introduced into Fe-Mn-Al-C–based austenitic steels. Stresses leads to local strain softening, which can cause strain localization.Īlso, at grain boundaries, the Kappa-carbides become incoherent, promoting crack initiation, which leads to embrittlement, particularly at high Al and C contents (2). However, the shearing of the coherent kappa-carbides at high cm3 g−1) at an elongation of ~30% under tensile loading.More specifically, Fe-Mn-Al-C steels with austenitic solid solution matrix and nanosized L'12 (ordered FCC) kappa-carbides reachĪ tensile strength of ~1190 MPa (specific tensile strength of 183 MPa In this context, the Fe-Mn-Al-C system has gained much attention since the addition of Al into the Fe-Mn-C system is effective to achieve both up to ~10% weight reduction and improved strength andĭuctility compared to conventional steels. Strength, ductility, toughness, and cost-effectiveness makes advanced lightweight Fe-based steels particularly attractive for future key engineering applications. Although other lightweight materials, e.g., Al-alloys, Mg-alloys, and carbon fiber composites, are available or under development, the unique combination of absolute strength, specific For example, reducing a vehicle’s weight translates linearly to a corresponding reduction in fuel consumption, with a rule of thumb value of 0.5 liters less fuel per 100 kg of weight Steels with high strength, toughness, and ductility combined with low mass density are important for saving energy and reducing emissions at maintained safety levels in multiple transportationĪpplications. Segregation Engineering in Additive Manufacturing.Combinatorial discovery of high-entropy alloys.Bi-directional TRIP High Entropy Alloys.Aluminium alloys for aerospace applications.Copper alloys and Copper-Nano-Composites.Hydrogen embrittlement of medium Mn steel.Soft magnetic steels for electromobility.Joint crystal plasticity and phase field models.Phase field and Ginzburg-Landau modeling.Large scale crystal plasticity amd ansiotropy simulation.Dislocation-based Crystal Plasticity Finite Element Method.Crystal Plasticity Finite Element Method.Chemistry dependence of constitutive models.Recrystallization and grain growth simulation.Field Ion Microscopy - Mapping single atoms.Atom probe tomography on metallic glass.Atom probe tomography cryogenic UHV prep.Digital Image Correlation and crystal plasticity simulation.Digital Image Correlation for multiphase alloys.What is red mud and why is it dangerous?.Sustainable steel production: Strip casting of steel.Green Steel: Reduction of iron ore by hydrogen plasma.Green Steel: Direct reduction of iron ore with hydrogen.Pellets for Hydrogen-Based Green Steel Making.
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