Heat Treatment and Surface Engineering

Recommended Prerequisites

Not applicable.

Teaching Methods

The lectures are executed using modern teaching methods, supported with the execution of laboratory

exercises involving practical student work at exercises, and including the typical heat-treated materials. The

students write reports for the individual exercises, focusing on the analytical evaluation of results and on

comparing the results to data available in the literature. The students are handed homework assignments and

solve the problems autonomously. The homework assignments support the lectures and ensure successful

student participation at the laboratory exercises, and train the students for solving different practical tasks

from the viewpoint of materials and material behaviour in different applications.

The exam consists of a written part and oral questioning (50%/50%).

Laboratory work (100%).

Overall grade is from exam/laboratory work (100%/100%).

Learning Outcomes

The objective of the Heat treatment and surface finishing engineering course is to provide the students with the necessary fundamentals for understanding the material properties given by the available heat treatment processes. The students therefore gain knowledge about the materials used in mechanical engineering, the physical properties and the microstructural phenomena characteristic to the individual material groups, with respect to the different heat treatment processes. A special presentation is delivered of phenomena occurring in the materials and influencing the achieved properties of core and surface of treated material. This knowledge also incorporates knowing and comprehending the material data available from the handbooks.

Work Placement(s)

No

Syllabus

1. Heat treatment processes: formation of austenite upon heating, transformation of undercooled austenite, continuous and isothermal TTT diagrams, pearlite, bainite and martensite transformation. Quenching media. 2. Steel hardenability: Grossman method, Jominy test; cooling intensity – H-value, quantitative determination of hardenability, practical application of data on hardenability in the optimization of heat treatment. 3. Diffusion heat treatment processes. 4. Surface hardening: induction hardening, physical foundations. 5. Electron beam hardening. 6. Heat treatment of steel and cast irons. 7. Special techniques for heat treatment of steels: Heat treatment of non-ferrous alloys based on aluminium, copper, titanium etc. Thermomechanical treatment of selected non-ferrous alloys with microstructural changes and mechanical properties. 8. Furnace atmosphere: controlled protective atmospheres, controlled active atmospheres. 9. Vacuum heat treatment of metals.

Assessment Methods

Assessment
The exam consists of a written part and oral questioning (50%/50%). Laboratory work (100%). Overall grade is from exam/laboratory work (100%/100%).: 100.0%

Bibliography

[1] W. Bolton: Engineering materials technology, Third edition, Butterworth Heinemann, Oxford, 1998

[2] K. E. Theling: Steel and its heat treatment, Bofors Handbook, Butterwords, London, 1975

[3] Handbook of Thermal Process Modeling of Steels, ed. C. H. Gür and J. Pan, 2009, CRC Press, Taylor & Francis Group

[4] K. G. Swift, J. D. Booker: Process Selection, From Design to Manufacture, 2003, Butterworth-Heinemann, Elsevier, Oxford

[5] J. Grum: Induction hardening, G. E. Totten, M. A. H. Howes, T. Inoue, Handbook of residual stress and deformation of steel. Materials Park, Ohio: ASM International, 220-247, 2002.

[6] G. E. Totten: Steel Heat Treatment : Equipment and Process Design, 2nd ed. Boca Raton: Taylor & Francis, Portland, Oregon, USA, 2007.