Ing Ind - Inf (Mag.)(ord. 270) - BV (483) MECHANICAL ENGINEERING - INGEGNERIA MECCANICA
052450 - SOLIDIFICATION AND WELDING METALLURGY
The goal of this course is to achieve a deep comprehension on the principles of solidification and welding metallurgy, as well as the most common welding processes for metals. The fundamentals of solidification of metals are presented and the main industrial welding processes are discussed in depth. The fracture toughness of welded joints is also discussed and guidelines for its experimental evaluation are provided.
Risultati di apprendimento attesi
After attending the course and after the final examination, the student will:
understand the basic aspects of the solidification of metals;
know and understand the main industrial welding processes for metals, including your advantages, limitations and field of application;
understand the metallurgical processes that occur in every region of fusion welding, including the main variables that controls the final microstructure of the weld metal and the heat affected zone for minimizing the presence of fragile zones.
Introduction to Solidification: Nucleation in pure liquids; Solidification of Binary Alloys; Solidification Modes; Solidification Parameters.
Welding: Fusion Welding Processes; Heat Flow in Welding; Residual Stresses and Distortion.
The Fusion Zone: Weld Metal Solidification; Post-Solidification Phase Transformations; Weld Metal Chemical Inhomogeneities; Weld Metal Solidification Cracking.
The Partially Melted Zone: Formation of the Partially Melted Zone; Problems associated with the Partially Melted Zone.
The Heat-Affected Zone (HAZ): Formation of the Heat-Affected Zone; Problems associated with the Heat-Affected Zone.
The previous attendance of Mechanical Technology I (Tecnologia Meccanica I) is suggested.
Modalità di valutazione
Written test with some exercise and questions. This test will verify if the students have got the theoretical knowledge and understanding about welding of metals and its fracture toughness, as well as the ability of apply these concepts on the assessment of welded joints.
K. Easterling, Introduction to the Physical Metallurgy of Welding, Editore: Butterworth-Heinemann, Anno edizione: 1992
S. Kou, Welding Metallurgy, Editore: Wiley-Interscience, Anno edizione: 2003
K. Weman, Welding Processes Handbook, Editore: Woodhead Publishing, Anno edizione: 2012
J. Dantzig, M. Rappaz, Solidification, Editore: CRC Press, Anno edizione: 2017, ISBN: 9782940222971
Tipo Forma Didattica
Ore di attività svolte in aula
Ore di studio autonome
Laboratorio Di Progetto
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