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Sub-topic |
UNIT 1: MECHANICAL PROPERTIES OF MATERIALS
Location and length: Weeks 1-2 [5 hours]
Objective and development: This unit sims to study the main selection criteria of materials, including technological and mechanical properties. It also studied the location, extraction and concentration of metals in nature. |
1.1 CRITERIA OF MATERIAL SELECTION
Introduction. Parameters that influence in the selection process. Materials in the design process. Technological properties: Cost, supply and transformation. Relation with user. Interaction with the environment.
1.2 MECHANICAL PROPERTIES
Introduction. Relation stress-deformation. Elastic and plastic behaviour. Ductility. Hardness. Fracture.
1.3 OBTENTION OF METALLIC MATERIALS
Introduction. Abundance of metals. Metals in nature. Metallurgy: obtention of metals from one of their minerals. Concentration of ores. |
UNIT 2: MATERIALS FOR TOOLS
Location and length: Weeks 2-3 [4 hours]
Objective and development: It is estudiad the metallurgy operations, which involve the extraction and production of steel, as well as the obtention of other relevant structural materials. |
2.1 STRUCTURAL MATERIALS: METALS AND ALLOYS
Introduction. Iron extraction and steel production. Recycling of steel and its environmental impact (UNE-EN 13437). Steels classification. Non-ferrous alloys.
2.2 MATERIALS FOR DEFENCE: STEELS FOR ARMOURS; ALLOYS OF ALUMINIUM, TITANIUM AND MAGNESIUM |
UNIT 3: STRUCTURAL AND BUILDING MATERIALS
Location and length: Weeks 3-4 [4 hours]
Objective and development: This unit deepens in building materials, mainly in the technology of concrete and wood, as well as the uses of the polymers and ceramic, regarding the raw materials and degradation, among others. |
3.1 THE PORTLAND CEMENT. TECHNOLOGY OF CEMENTS
Raw materials (water, arids, additives) and manufacture. Reactions of hydratation and hardening. Expansion and contraction. Mechanical resistance. Inventory of emmisions. Measures in fresh and hardened concrete. Degradation of cements.
3.2 WOODS
Structures, properties and main woods. Technology of woods. Degradation and recycling of woods.
3.3 POLYMERS
Structures, properties and main polymers. Uses as building materials. Degradation and recycling of polymers.
3.4 CERAMICS
Structure, properties and main ceramic materials. Uses as building materials. Degradation and recycling of ceramic materials. |
UNIT 4: DEGRADATION OF MATERIALS. THERMAL, THERMOCHEMICAL AND THERMOMECHANICAL TREATMENTS
Location and length: Weeks 4-6 [6 hours]
Objective and development: This unit analyses the principles of materials corrosion, the importance of the different microstructures in steels and the thermal treatments, as well as thermochemical treatments, with and without change of composition of the material. |
4.1 DEGRADATION OF MATERIALS. PROCESSES OF CORROSION
Principles of corrosion. Types of corrosion. Thermodynamics and kinetics of corrosion. Protection against corrosion.
4.2 THERMAL TREATMENTS
Introduction. Thermal cycle. Normalisation and annealing. Martensitic transformations: Time-Temperature-Transformation diagrams (TTT). Quenching. Isothermal treatments: austempering, martempering, isothermal annealing. Problems generated during the thermal treatments.
4.3 THERMOCHEMICAL AND SUPERFICIAL TREATMENTS
Introduction. Superficial modification, without change of composition: Quenching by flame, induction or laser, hardening by transformation, superficial fusion. Superficial modification, with change of composition: carburization, nitrurization, carbonitrurization. Types of coatings: coatings by immersion, coatings by electrodeposition, annealing, ceramic coatings, physical and chemical deposition, thermal projection. Preparation of the surfaces by mechanical treatments: cleaning with dissolvent, cleaning with mechanical tools. |
UNIT 5: MATERIALS SUBJECTED TO SMELTING, PLASTIC AND VISCOELASTIC DEFORMATION AND POWDER COMPACTION
Location and length: Weeks 7 -9 [6 hours]
Objective and development: This unit analyses the answer of different materials subjected to distinct processes of conformed, like the smelting of metals, the plastic deformation of metals, the molding, injection and extrusion of polymers and the poder metallurgy. |
5.1 SMELTING
Foundations of the smelting of metals
5.2 ANSWER OF THE MATERIALS SUBJECTED TO THE MAIN PROCESSES OF PLASTIC DEFORMATION
5.3 ANSWER OF THE MATERIALS SUBJECTED TO THE MAIN VISCOELASTIC PROCESSE
Molding of polymers
5.4 POWDER METALLURGY |
UNIT 6: UNION AND WELDING TECHNOLOGIES
Location and length: Weeks 9-11 [3 hours]
Objective and development: This unit analyses the main union technologies: the union by means of adhesives and the union by means of welding. |
6.1 ADHESIVE MATERIALS
6.2 MATERIALS FOR WELDING |
LABORATORY
(14 hours) |
P1. Obtention of aluminium by aluminothermy and/or electrolysis (2 hours)
It is studied the concentration processes of metals from the ores by means of extraction processes. It will be employed AENOR norms (accessible database through the University of Vigo). For example, it will be proposed to research some of the following norms and the consequent resolution of questions:
. Mechanical characteristics of the aluminium and its alloys (UNE-EN 683-2:2008)
. Annealing of aluminium and its alloys (UNE 38019:2017)
. Scrap of the aluminium and its alloys (UNE-EN 12258-3:2004).
. Welding of the aluminium and its alloys (UNE-EN ISO 9692-3:2016).
P2. Evaluation of building materials (concretes) (4 hours)
The student manufactures concrete with different compositions and study its properties in fresh and hardened material. It is also analized the Instruction of Structural Concrete (EHE-08). Students work in groups the resolution of a more complex problem, so that its realisation need of the cooperative work of two students (or three students, exceptionally). It is included in this time the presentation and evaluation of the project.
P3. Influence of corrosion in the modification of mechanical properties (2 hours)
Student performs essays of corrosion in metals and study the reactions involved.
P4. Superficial treatments of materials: cataphoresis and electrolytic cleaning (2 hours)
Student makes treatments of surfaces recovery with painting applied by means of cataphoresis and elimination of oxides adhered with electrolytic cleaning.
P5. Thermal treatments of materials: normalised, annealing and quenching (2 hours)
Students test three thermal treatments on metal probes and their effects on mechanical properties.
P6. Union technologies: evaluation of adhesives (2 hours)
Student determine the most effective unions between materials by means of simple or hybrid unions, in different environmental conditions. They will use the AENOR norms (accessible database through the University of Vigo). For example, it will be proposed researches of some of the following norms and the consequent resolution of questions:
. Self-adhesive tapes (UNE-EN 12481:2002)
. Adhesives for paper, cardboard and packagings (UNE-CR 14376:2002)
. Adhesives. Terms and definitions (UNE-EN 923:2016)
The laboratory program may vary to adjust to the master classes or seminar sessions. |
SEMINARS
(7 hours) |
Seminars in small groups, which will reinforce the contents of the master classes. |
