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Politecnico di Torino
Academic Year 2017/18
01NGFMZ
Materials engineering
Master of science-level of the Bologna process in Materials Engineering - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Vitale Brovarone Chiara ORARIO RICEVIMENTO O2 ING-IND/22 71.5 21 7.5 0 6
SSD CFU Activities Area context
ING-IND/22 10 B - Caratterizzanti Discipline dell'ingegneria
Subject fundamentals
INTRODUCTION
This course is devoted to students who would like to extend their knowledge of chemistry, physics and materials science and technology to materials engineering. The main aim of Materials Engineering amounts to selecting the best material to build a component that must meet tight design specifications. In order to address this scope, the course will focus on the tools to assess and forecast the behaviour of materials under operating conditions. Accordingly, this course will mainly follow a design-led approach and will include many study-cases. Students will be also trained to have an active part in the whole design process and to introduce the features and performances of new advanced materials.
Expected learning outcomes
SKILLS AND KNOWLEDGE TO BE ACQUIRED
The objective of the course is to enable students to transform matter in materials for engineering purposes. This means to be able to point out the critical issues of a design and to cooperate with the designers to select the appropriate materials matching the requirements of the component. At the end of this course the student will have acquired the following abilities:
- Discuss design issues in a sounding technical language.
- Know the advanced elements of the science and material technology provided in the course.
- Forecast the behavior of materials under operating conditions with particular care to critical conditions.
- Understand a design, point out its critical elements and interact with the designer to select the best possible material for the design.
- Draw professional technical reports with proper English technical wording.
- Manage contrasting design specifications.
- Estimate the key characteristic parameter values for the main materials.
Prerequisites / Assumed knowledge
REQUIRED KNOWLEDGE
Student must have solid knowledge of the fundamental scientific disciplines and of Chemistry, Physics and Mathematics in particular. Besides an in depth knowledge of Science and Material Technology topics provided in three-year university program courses is required.
Contents
COURSE CONTENT
' Introduction, course's rules , sounding technical language. 1h
' Further insight on crystalline structure: main crystalline structure of metals ceramics and polymers; calculation of a few physical properties. 3h
' Silica: polymorphism, residual stresses and operating rules. 2h
' Crystal defects and imperfections: further insight. Calculation of energy and tensions associated to dislocations. 6h
' Reasons of elongation of a material pulled in tension: Hooke's and Schmid's laws. Viscosity, to slip or to flow? 3h
' Thermal phenomena: diffusion , application issues. 2h
' Phase diagrams: ternary phase diagrams. Microstructural development during slow cooling. Some important ternary phase diagrams. 7h
' Phase transformations and interfaces: the thermodynamic approach. Different classifications of phase transformations. Interfacial free energy, interphase interfaces; residual stresses. Diffusional transformations; solidification in pure metals, rate of the different phenomena. Nucleation of melting. Heat flow and interface stability; thermal dendrites. Order-disorder transformations. Diffusionless transformations, glissile and not glissile interfaces, interface migration, military and martensitic transformation, steel martensite, Bain model. Homogeneous transformation, spinodal decomposition. Christian's classification. Glass transition and amorphous state. Technological issues of phase transformations. Non equilibrium transformations. The kinetics of phase transformations, TTT and CCT curves. 17h
' Mechanical behaviour of materials: further insight on mechanical tests. Introduction to fracture mechanics; from Griffith's theory to Paris-Erdogan equation. Fatigue and creep behaviour; life-cycle design. 13h
' The guide line from science-led to design-led: the selection of structural materials, material property charts, engineering design parameters.8h
' If the design is limited by: density and elastic moduli; stiffness; strength; fracture and fracture toughness; cyclic loading and damage; friction and wear; high temperature; oxidation, corrosion and degradation.17h
Delivery modes
LABORATORIES AND/OR EXERCISES SESSION
' Numerical exercises on crystal defects, diffusion, and mechanical behaviour. 5h
' Phase diagram. 3h
' Investigation technique: laboratory of optical and electronic microscopy. 2h
' Laboratory of mechanical testing. 2 h
' Material's selection: case studies.9h
Texts, readings, handouts and other learning resources
REFERENCES

- W. G. Moffat, G.W. Pearsall, J. Wulff: 'Struttura e ProprietÓ dei Materiali', Casa Editrice Ambrosiana, Milano
- J.C. Anderson, K.D. Leaver, R.D. Rawlings, J.M. Alexander: 'Materials Science', 4th Edition, Van Nostrand Reinhold (UK)
- D.R. Askeland: 'The Science and Engineering of Materials', 3rd Edition, Chapman and Hall
- D.A. Porter, K.E. Easterling: 'Phase Transformations in Metals and Alloys', Van Nostrand Reinhold (UK)
- J.F. Shakelford: 'Introduction to Materials Science for Engineers', 4th Edition, Prentice Hall International
- W.F. Smith.: 'Scienza e Tecnologia dei Materiali', 3░ ed. McGraw-Hill
- M. Ashby, H. Shercliff, D Cebon: 'MATERIALS Engineering, Science, Processing and Design'.2nd ed. Elsevier Ed.
- F. Marino: 'Appunti dalle lezioni di Scienza e Ingegneria dei Materiali'

Programma definitivo per l'A.A.2016/17
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