Interrelations between Phase Stabilities, Microstructure and Performance of Superalloys
A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Materials Characterization".
Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 371
Special Issue Editor
Interests: metastable phases; special alloy systems; intermetallics; precipitate evolution; functional materials; heterogeneous systems
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
During the last few decades, superalloys have reached an incredible state of development for aerospace gas turbine applications. In particular, the role of different alloying contributions for optimized solid solution and precipitation strengthening and related creep resistance is well understood. On the other hand, the complex interrelations among phase stabilities, microstructures, and performance at different service conditions still require in-depth research for safe, clean, and sustainable long-term applications. This concerns in particular interactions between turbine blade materials and their corrosion-resistant coatings, but also questions on micro-segregations and their engineering potentials, as well as preventative measures against detrimental phase formations in terms of materials embrittlement, such as topologically close-packed structures. Moreover, recent efforts in superalloys research and development blaze a trail in their wider applicability in different fields of industry, as well as higher energy conversion efficiency, i.e., their use at ever-increasing temperatures. Since this aim is unambiguously associated with higher thermomechanical and corrosive stresses, materials beyond conventional Fe–Ni-based and Ni-based materials receive more and more spotlight. This also includes lower-density superalloys’ development and design concepts, with beneficial creep properties due to reduced stress levels and reduced fuel consumption.
Ass.Prof. Dr.Sc.ETH Erwin Povoden-Karadeniz
Guest Editor
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Keywords
- Superalloys applications
- Microsegregation in superalloys
- Interface engineering in superalloys
- Beyond Ni-base
- Lighter-weight superalloys
- Phase–microstructure–creep interrelations
