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Materials Science with Lab Exercises

Module name (EN): Materials Science with Lab Exercises
Degree programme: Mechanical and Process Engineering, Bachelor, ASPO 01.10.2019
Module code: MAB_19_A_1.03.WSK
Hours per semester week / Teaching method: 4V+1P (5 hours per week)
ECTS credits: 5
Semester: 1
Mandatory course: yes
Language of instruction:
Written exam 180 min.

[updated 05.10.2020]
Curricular relevance:
MAB_19_A_1.03.WSK Mechanical and Process Engineering, Bachelor, ASPO 01.10.2019, semester 1, mandatory course
75 class hours (= 56.25 clock hours) over a 15-week period.
The total student study time is 150 hours (equivalent to 5 ECTS credits).
There are therefore 93.75 hours available for class preparation and follow-up work and exam preparation.
Recommended prerequisites (modules):
Recommended as prerequisite for:
MAB_19_IP_5.04.FML Joining Techniques with Integrated Lab Course
MAB_19_M_3.05.MK1 Machine Elements and Design 1
MAB_19_M_4.04.MK2 Engineering Design (with Project)

[updated 02.09.2021]
Module coordinator:
Prof. Dr. Walter Calles
Prof. Dr. Walter Calles (lecture)
M.Eng. Marc Allenbacher (practical training)
M.Eng. Carsten Kaldenhoff (practical training)

[updated 02.09.2021]
Learning outcomes:
After successfully completing this course, students will be familiar with the tensile test, hardness test methods and the charpy impact test and will be able to determine and interpret the corresponding characteristic values. They will be able to attribute specific material behavior to the respective microstructure.
Students will be familiar with the basics of elastic and plastic deformation, the microstructure of metals and basic mechanisms for increasing strength. They can correlate these with the material entanglement observed.
Students will be familiar with the basic types of phase diagrams in binary systems, as well as iron-cement and the connection to cooling curves. They will be able to derive the evolution of the microstructure and correlate it with real structures. They will be able to calculate proportions and phases depending on the concentration.
Students will understand the effect of steel production on the properties of steels. They will be able to select the annealing and hardening processes required to achieve desired properties. They will also be able to select suitable surface hardening methods.
Students will be able to determine the microstructure of steel structures.  
In practical exercises, they will learn to work in teams to acquire new knowledge and to work on interdisciplinary test tasks. They will be able to reflect their opinions and defend them with factual arguments.

[updated 05.10.2020]
Module content:
- Load types (axial, shear, bending, torsion)
- Tensile testing
- Basic terms: strength-deformation-breakage
- Brittle and ductile behavior and external influences
- Test procedures
       Hardness test
       Charpy impact test
       Fatigue test, Wöhler curve and Smith chart
- Metallurgy
       - Crystal structure and microstructure
       Crystallographic defects and their significance for deformability and strength
- Basics of materials technology        
       Nucleation and solidification       
       Alloy and precipitation formation
       Microstructure change and influence through diffusion-controlled processes
- Phase diagrams
       Cooling curves
       Basic types with segregation and formation of eutectics and intermetallic phases
       Schematic diagrams of microstructural development
       Calculating quantities
- Cementite phase diagram
       Derivation of the microstructure development
       Schematic and real microstructural development  
       Calculating quantities
- Steel production and alloy adjustment
- Heat treatment processes
       Stress relief annealing
       Recrystallization annealing
       Soft annealing
       Coarse-grain annealing
       Homogenization annealing
- Basics of hardening and tempering
- Formation and adjustment of martensite, intermediate stage and microstructure of the lower pearlite stage
- TTT diagram and cooling chart
- Influence of C-content and alloying elements on hardening and tempering ability and the TTT diagram
- Formation, properties and effect of retained austenite
- Surface hardening process with changes in the chemical composition
       Case hardening
- Steel designations

[updated 05.10.2020]
Teaching methods/Media:
Interactive, seminaristic lecture
Practical training in the lab in small groups

[updated 05.10.2020]
Recommended or required reading:
Bargel, Schulze: Werkstoffe
Bergmann: Werkstofftechnik Teil 1
Heine, Werkstoffprüfung

[updated 05.10.2020]
[Tue Sep 28 06:33:19 CEST 2021, CKEY=mwmla, BKEY=m2, CID=MAB_19_A_1.03.WSK, LANGUAGE=en, DATE=28.09.2021]