First cycle
degree courses
Second cycle
degree courses
Single cycle
degree courses
School of Engineering
MECHANICAL ENGINEERING
Course unit
METALLIC MATERIALS (Ult. numero di matricola pari)
IN05105646, A.A. 2019/20

Information concerning the students who enrolled in A.Y. 2017/18

Information on the course unit
Degree course First cycle degree in
MECHANICAL ENGINEERING
IN0506, Degree course structure A.Y. 2011/12, A.Y. 2019/20
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Degree course track FORMATIVO [001PD]
Number of ECTS credits allocated 9.0
Type of assessment Mark
Course unit English denomination METALLIC MATERIALS
Department of reference Department of Industrial Engineering
Mandatory attendance No
Language of instruction Italian
Branch PADOVA
Single Course unit The Course unit can be attended under the option Single Course unit attendance
Optional Course unit The Course unit can be chosen as Optional Course unit

Lecturers
Teacher in charge PAOLO FERRO ING-IND/21

ECTS: details
Type Scientific-Disciplinary Sector Credits allocated
Educational activities in elective or integrative disciplines ING-IND/21 Metallurgy 9.0

Course unit organization
Period First semester
Year 3rd Year
Teaching method frontal

Type of hours Credits Teaching
hours
Hours of
Individual study
Shifts
Lecture 9.0 72 153.0 No turn

Calendar
Start of activities 30/09/2019
End of activities 18/01/2020
Show course schedule 2019/20 Reg.2011 course timetable

Syllabus
Target skills and knowledge: The course is aimed to let the student know the basic notions related to metallic materials with particular reference to the problems related to mechanical engineering. The student will acquire the ability to correlate the physical and mechanical properties of metallic materials with their microstructure, and at the same time he will learn to correlate the microstructure with the process parameters, which it derives from.
The goal is to provide the student with a valid tool for the choice and the best use of metallic materials depending on the application to which they refer.
Examination methods: The examination consists of a written test constituted by
1. quizzes (multiple choice questions)
2. an exercise related to the solution of a metallurgical problem (heat treatment, casting, mechanical testing, etc.)
3. an open question on a specific topic concerning the course

It is considered that this verification mode is sufficient to evaluate the skills and information acquired by the student at the end of the course
Assessment criteria: The evaluation of the student's preparation will be based on the understanding of the course topics, on the acquisition of the concepts and methodologies proposed and on the ability to apply them in an autonomous and conscious way.
Course unit contents: The course contents can be summarized as follows:
1. Mechanical tests. General information on mechanical tests and stress states. The tensile test and the engineering stress-strain curve. Mechanical properties measured with the tensile test. The true stress- true strain curve. Metallurgical aspects of the fracture. The hardness test. Technological concept of hardness. Brinell, Vickers and Rockwell hardness. Microhardness. General rules. Test of resilience. General information on the importance of toughness. The ductile to brittle transition temperature. The instrumented Charpy test. Fatigue (outline). The fatigue test. Nucleation, propagation, fracture. Metallurgical aspects of fatigue strength. Creep (outline). The creep curve. The breaking test under tension. Fracture at high temperature.
2. Solid-state metals. Crystalline lattices. Allotropy and polymorphism. Interstitial sites. Crystalline defects. Point defects. Planar defects. Linear defects, dislocations.
3. Plastic deformation and movement of dislocations. Movement of dislocations. Plastic deformation. Interactions between dislocations. Interactions dislocations-obstacles (defects). Genesis of dislocations.
4. Solid solutions. Solid solution concept. The Hume-Rothery's rules. Limit of solubility
5. Solid-state diffusion. Diffusion mechanisms. Fick's first and second law. Application examples.
6. Strengthening of metallic materials. Grain size. Solid solution. Precipitation. Work hardening. Other types of strengthening.
7. Work-hardening and recrystallization. Work-hardening. Cold working. Recrystallization. Hot workings.
8. Solidification of metallic materials. Liquid and solid state. Nucleation and growing. Solidification time. Structure of castings and ingots. Solidification defects. Structure control and outline of welding metallurgy.
9. Phase diagrams. Binary phase diagrams. Segregations.
10. The Iron-Carbon phase diagram. Generality. Steels: transformations during solidification and cooling. Structure-property correlations. Effect of alloyed elements.
11. Isothermal and anisothermal transformations of steels. Isothermal transformations (TTT curves). Bainitic transformation. Martensitic transformation. Anisothermal transformations (CCT curves). Composition-microstructure-property correlations. Interpretation of the microstructure of steels.
12. Heat treatments. General information on heat treatments. Annealing, Normalization, Tempering. Concept of hardenability. Heat treatments at temperatures lower than Ac1. Surface treatments.
13. Classification of steels. European Standards. Construction steels for general use
Special construction steels. Special steels for bearings. Tool steels. Maraging steels. Steels with 13% Mn. Stainless steels (introductory aspects, austenitic stainless steels, ferritic and martensitic stainless steels, duplex stainless steels, characteristics and applications)
14. Cast irons. Structure and morphology of graphite. Ductile cast iron. Features and applications. Austempered (ADI) and new generation ductile cast irons (SS-FDI)
15. Introduction to aluminum alloys
Planned learning activities and teaching methods: The learning activities mainly concern lectures and practical exercises in the classroom. Given the high number of students attending the course, it is impossible to offer practical laboratory experience. An effort is done to mitigate this negative aspect by using educational videos. Finally, during the lesson, the student-teacher interaction is stimulated through questions for learning verification.
Additional notes about suggested reading: The recommended material for study is the lecture notes available in the bookshop and which students are invited to take notes on. All the educational videos used during the lessons are also made available on Moodle.
Textbooks (and optional supplementary readings)
  • P. Ferro, F. Bonollo, Dispense di Materiali Metallici con esercizi. --: Libreria Progetto, 2018. Cerca nel catalogo
  • Paolucci, Gian Mario, Lezioni di metallurgia per la laurea in ingegneria meccanicaG. M. Paolucci. Padova: --, --. Cerca nel catalogo
  • W. Nicodemi, Metallurgia. Bologna: Zanichelli, 2007. Cerca nel catalogo
  • Callister, William D.; Caneva, Claudio, Scienza e ingegneria dei materialiuna introduzioneWilliam D. Callisteredizione italiana a cura di Claudio Caneva. Napoli: EdiSES, --. Cerca nel catalogo
  • Askeland, Donald R., <<The >>science and engineering of materialsDonald R.Askeland. London [etc.]: Chapman & Hall, 1990. Cerca nel catalogo