Metallic Materials

Code:

L.EM014

Acronym:

MM

Keywords
Classification	Keyword
OFICIAL	Materials

Instance: 2022/2023 - 1S

Active?	Yes
Responsible unit:	Materials and Technological Processes Group
Course/CS Responsible:	Bachelor in Mechanical Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L.EM	275	Syllabus	2	-	6	52	162

Teaching language

Portuguese

Objectives

Understand the process of manufacture of the cast iron and steels and origin of the inclusions.
Understand, predict and relate microstructures with chemical composition, cooling rates and mechanical properties.
To know the nomenclature and objectives of the main states of supply of the metallic alloys and their thermal treatments.
Ability to discuss the selection of metal alloys.
Ability to design and understand thermal treatments.
Select materials, coatings and surface treatments, considering the corrosion resistance, ease of the manufacturing process and recyclability of the proposed solutions.
Computer Skills
Domain material selection software - CES Edupack
Experimental Skills
Carry out thermal treatments, microstructural analysis and mechanical tests.
Transversal Competencies
Capabilities to collect technical information, carry out group work, reports and presentations.

Learning outcomes and competences

It is expected that by the end of the semester, students should:
1. Be acquainted with steel microstructures and cast iron, and relate them with chemical composition and cooling velocities on the various heat treatments;
2. Be able to relate microstructures with mechanic properties: resistance, ductility and tenacity;
3- Be acquainted with the nomenclature and objectives of the metal alloys and thermal treatments;
4- Be able to discuss steel, cast iron and non-ferrous alloys selection based on the mechanical properties depending on the function of chemical composition;
5- Be able to understand thermal treatments for pre-defined objectives;
6- Be able to foresee the need of material, coatings, superficial chemical and thermo chemical treatments selection, taking into account the resistance to corrosion, unproblematic production and recyclability.

Working method

Presencial

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

Mechanical and metallurgical concepts of mechanical behavior.
Equilibrium diagrams of metal alloys.

Program

FERROUS ALLOYS
Manufacturing process of steel and cast iron. Inclusions.
Equilibrium diagram of Fe-C Alloys. Influence of the alloying elements. Austenite transformation diagrams.
Martensitic transformations.
Thermal treatments.
Types of steels: construction, tools, stainless and structural precipitation. Mechanical properties. Thermal treatments.
Thermochemical treatments. Types of corrosion. Standards.
Cast iron: gray, ductile, white, malleable and treated. Inoculation and nodularization. Mechanical properties.
Thermal treatments.
NON-FERROUS ALLOYS
Copper and its alloys: brass and bronze.
Aluminum and its alloys. Treatable and non-thermally treatable aluminum.
Zinc alloys. Magnesium alloys.
Titanium alloys. Shape memory alloys.
High temperature alloys: nickel superalloys.
Material selection software: the CES Edupack. Life cycle of metallic materials. Sustainability and eco-design, the "Ecoaudit" tool.

Mandatory literature

Lucas Filipe Martins da Silva; Materiais de Construção. ISBN: 978-989-723-049-3
Soares Pinto; Aços – Características Tratamentos

Complementary Bibliography

Smith, W. F., & Rosa, M. E.; Princípios de ciência e engenharia de materiais, 1998
Soares Pinto; Aços para ferramentas – características tratamentos aplicações
Silva, L., Lino Alves, J., Torres Marques, A., Duarte, T., Antunes, V., & Nóvoa, P.; Problemas e Trabalhos Práticos de Materiais de Construção, 2017
Davis, J. R.; Stainless steels, ASM international, 1994
Donald R. Askeland; The science and engineering of materials. ISBN: 0-534-55396-6

Teaching methods and learning activities

Teaching methodologies:
Weekly load - 2h Theory, 2h Laboratory Practices
Total hours -52h
Autonomous study and reporting of experimental work - 106h
Study visit to the a steel company -4h
Attendance to students (teachers are always available, since work requires a high involvement of teachers and
students).
Grading:
The assessment is distributed with a final exam:
Practical work (groups of 2 students): 30%
Final exam or resource: 70%
Minimum exam mark = 7.0/20 values
Only the part of the exam is susceptible to improvement.

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	70,00
Trabalho laboratorial	30,00
Total:	100,00

Amount of time allocated to each course unit

Designation	Time (hours)
Elaboração de relatório/dissertação/tese	20,00
Estudo autónomo	40,00
Frequência das aulas	52,00
Trabalho laboratorial	50,00
Total:	162,00

Eligibility for exams

Presence of at least 75% of laboratory classes is mandatory to final exam admission

Calculation formula of final grade

Final classification (CF) = 30% of the grade of the practical part (P) + 70% of the grade of the final or second exam (T).

All ratings on the 0...20 scale.


To pass the UC it is necessary to obtain a minimum score of 7.00 in both components: T and P.

Coherence between group and individual grade: the grade in the P component cannot be 6 (six) higher than the grade in the T component. The opposite does not apply. Valid for exam and second exam.

Examinations or Special Assignments

Not applicable

Internship work/project

Not applicable

Special assessment (TE, DA, ...)

Not applicable

Classification improvement

Only the part of the exam is likely to improve.
The formula for calculating the final grade for grade improvement is the same as for the grade that the student wants to improve.

Observations

Students who attend classes in the previous year and did the practical assignment can either: 1. attend classes again and do another practical assignment 2. or attend to the final exam and the practical assignment will be taken into account in the final mark.

The practical assignment will be valid for a year. The practical assignment grade includes: students’ assiduity, class work, mini-tests and the report and discussion of the assignment.