Digital Teaching
The lecture will be offered in the winter semester 2022/2023 in presence. In case this should not be possible, the lecture content will be made available to the students via prepared videos via Moodle. Parallel to the videos, there will be digital office hours via videoconference in which the lecture content can be discussed. By participating in the video conference, students agree to use the conference tool for digital teaching.
Lecture slides will be made available via Moodle.

Lehrinhalte
[list]
[*]Time-dependent mechanisms under high temperature loading: creep, oxidation and fatigue
[*]Microstructural aspects of metallic alloys: Recrystallization, recovery, grain growth, and precipitate formation
[*]High-temperature strength and deformation: mechanisms and modeling concepts
[*]Fatigue under high temperature loading: thermal fatigue; creep fatigue
[*]High-temperature corrosion: thermodynamics and kinetics of oxidation; hot-gas corrosion
[*]High temperature alloys: Fe-, Co-, Ni-based alloys as well as intermetallic alloys
[*]Coatings for high temperature applications: Coating types, coating and characterization processes.
[*]Ceramics: Monolithic ceramics and composite ceramics
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[b]Learning Outcomes:[/b]

After successfully completing the course unit, students should be able to:
[list]
[*]Describe relevant time-dependent mechanisms under high temperature loading
[*]Explain microstructural change processes and discuss their driving force and effect on material and component behavior
[*]Explain the mechanisms of time-dependent deformation and strength and discuss constitutive as well as phenomenological description concepts and their model assumptions and limitations
[*]Estimate creep behavior based on experimental material data and phenomenological description models
[*]Explain processes of fatigue under high temperature and to describe the influence of creep and relaxation on fatigue behavior
[*]Explain thermodynamic principles as well as kinetic aspects of high temperature corrosion and to explain the phenomenon of hot gas corrosion
[*]Describe metallic and intermetallic materials for high-temperature applications, to discuss their application limits and to select materials for given application fields on a well-founded basis
[*]Explain the functions and mechanisms of action of high-temperature coatings and describe the main manufacturing processes and relevant characterization methods
[*]Describe ceramic materials for high-temperature applications and discuss the advantages and disadvantages of monolithic ceramics versus fiber composite ceramics
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Literature
[list]
[*]Oechsner, M: Umdruck zur Vorlesung (Foliensätze)
[*]Maier H.J., Niendorf T., Bürgel R. (2019) Handbuch Hochtemperatur-Werkstofftechnik. Springer Vieweg, Wiesbaden
[*]Rösler J., Harders H., Bäker, M. (2019) Mechanisches Verhalten der Werkstoffe, Springer-Verlag
[*]Birks, N., Gerald H. Meier G.H., Pettit F.S. (2006) Introduction to the high temperature oxidation of metals. Cambridge University Press
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Voraussetzungen
Basic knowledge of fundamental materials engineering or materials science lectures is required.

Erwartete Teilnehmerzahl
40

Further Grading Information
Schedules, further infomations and proceedings can be found on Moodle: https://moodle.tu-darmstadt.de

Nachhaltigkeitsbezug der Veranstaltungsinhalte
The importance of high-temperature materials for increasing the efficiency of thermal energy conversion processes is dealt with in detail. Suitable material systems are discussed on the basis of technical as well as ecological, economic and social aspects in terms of sustainable use.

Online-Angebote
moodle

Semester: WT 2022/23