Seminars and Events

Exploration of ternary subsystems of superalloys by high-throughput thin film experimentation

Date/Time: 17.09.2014. 9:00 a.m.
Place: Ruhr-Universität Bochum, Bochum, Germany

Alfred Ludwig, Materials Research Department, Ruhr-Universität Bochum, Bochum

Ternary subsystems of Ni- and Co-based superalloys are explored by combinatorial and high-throughput methods. The materials systems to be investigated (Ni-Al-Cr, Cr-Ni-Re, Co-Ti-W, Co-Al-W) are deposited in the form of materials libraries by special magnetron sputter deposition methods. These materials libraries are subsequently processed at high temperatures (< 1100°C) and characterized by high-throughput experimentation methods (automated EDX, XRD, temperature-dependent resistance screening) in order to relate compositional information with structural properties. The talk will cover examples of the combinatorial exploration of ternary sub-systems of superalloys with regard to identifying unknown phases as well as to explore the compositional ranges of the different phases. Examples of up-scaling from thin film findings to the bulk are discussed. Furthermore, the oxidation behavior of superalloy subsystems, e.g. Ni-Al-Cr was studied by high-throughput methods.

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