COURSE UNIT TITLE

: TEXTURE AND ANISOTROPY

DEGREE PROGRAMMES

Description of Individual Course Units

Course Unit Code Course Unit Title Type Of Course D U L ECTS
MME 5027 TEXTURE AND ANISOTROPY ELECTIVE 3 0 0 7

Offered By

Graduate School of Natural and Applied Sciences

Level of Course Unit

Second Cycle Programmes (Master's Degree)

Course Coordinator

Offered to

M.Sc. Metallurgical and Material Engineering
Metallurgical and Material Engineering
Metallurgical and Material Engineering

Course Objective

Most commonly used manmade and naturally substances are aggregates of crystals or polycrystals. Their crystallographic orientation is generally non-random. All non-random orientation distribution are called preferred orientations or texture. In the textured polycrystals, many macroscopic physical properties are anisotropic, i.e. they depends on direction. This course is about the measurement and analysis of textures, the prediction of polycrystal properties from measured textured and known single crystal properties, and the prediction of the develeopment of textured and the ensuing anistropic properties during elastic and plastic deformation. It also gives an overwiev of observed textures in metals, ceramics and rocks. There is a balance between theoretical concepts and experimantal techniques. Depending on these, description of textures and anisoropies, anisotropic mechanical properties in the textured polycrystals and some applications will be discussed in this course.

Learning Outcomes of the Course Unit

1   To understand relationships in the range of anisotropy, textures and material fabrications used from plastic deformation to annealing process
2   To develop theoretical and experimental abilities in texture and anisotropy by using pole figure measurements with diffraction techniques and finite-element modeling of heterogeneous plasticity and some applications
3   To determine of the orientation distribution (OD) from pole figure data
4   Evaluation tensor properties and kinematics and kinetics of plasticity
5   To take further training on metallic, geological and ceramic materials how to obtain texture in new thin films, bulk and powder materials with multifunctional properties

Mode of Delivery

Face -to- Face

Prerequisites and Co-requisites

None

Recomended Optional Programme Components

None

Course Contents

Week Subject Description
1 Introduction: - Project assignements and brief explanations - Introduction-Motivation
2 Anisotropy and symetry: - Structure and properties - Crystal symetries - Sample symetry and test symetry - Anisotropy and symetry of properties
3 The representation of orientations and textures: - The representation of directions and planes - The representation of orientation - The representation of textures - Continuous distributions and series representation
4 Determination of the orientation distribution (OD) from pole figure data: - Relation between pole figure and the OD - Harmonic method - Ghosts - Discret or direct method - Operational issues
5 Pole figure measurements with diffraction techniques: - X-ray diffraction - Special procedure - Neutron diffraction - Electron diffraction - Comparison of methods
6 Typical textures in metals: - Deformation textures in face-centered cubic metals - Deformation textures in body-centered cubic metals - Deformation textures in hexagonal close-packed metals - Deformation textures in other materials - Transformation textures - Texture inhomogeneities - Solidification and thin film textures
7 Typical textures in geological materials and ceramics: - Geological materials - Bulk ceramics - Thin films and coatings
8 Tensor properties: - Grain averages - Crystal elastic properties - Elastic and thermal properties of polycrystals - Visco-elastic properties of polycrystals
9 Midterm Exam
10 Kinematics and kinetics of plasticity: - Slip and twinning in single crystals - Grain interaction and polycrystal plasticity - Kinematics in polycrystal body
11 Effects of texture on plasticity: - Experimental techniques and phonomenology - Yield-surface shapes - Stress-strain curves
12 Presentation of term projects
13 Presentation of term projects
14 Presentation of term projects

Recomended or Required Reading

U. F. Kocks, C.N. Tome and H. R. Wenk, Texture and Anisotropy, Cambridge University Press, Cambridge, 1998.

Planned Learning Activities and Teaching Methods

lecture, midterm exam, project

Assessment Methods

SORTING NUMBER SHORT CODE LONG CODE FORMULA
1 MTE MIDTERM EXAM
2 PRJ PROJECT
3 FIN FINAL EXAM
4 FCG FINAL COURSE GRADE MTE + PRJ/2 * 0.50 +FIN * 0.50
5 RST RESIT
6 FCGR FINAL COURSE GRADE (RESIT) MTE + PRJ/2 * 0.50 + RST * 0.50


Further Notes About Assessment Methods

Attendance of students will be evaluated.

Assessment Criteria

Mid-term exam 25 % + Project 25 % + Final exam 50 %

Language of Instruction

English

Course Policies and Rules

Students must be attended to course.

Contact Details for the Lecturer(s)

erdal.celik@deu.edu.tr

Office Hours

Friday 14:00-16:00

Work Placement(s)

None

Workload Calculation

Activities Number Time (hours) Total Work Load (hours)
Course hours 13 3 39
Study hours out of class 13 5 65
Preparation for midterm exam 1 17 17
Preparation for final exam 1 16 16
Preparing assignments 1 24 24
Mid-term exam 1 3 3
Final exam 1 3 3
TOTAL WORKLOAD (hours) 167

Contribution of Learning Outcomes to Programme Outcomes

PO/LOPO.1PO.2PO.3PO.4PO.5PO.6PO.7PO.8PO.9PO.10PO.11PO.12
LO.153534354
LO.253534354
LO.353534354
LO.443534354
LO.553534354

CONTACT INFORMATION
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Phone: +90(232) 412 12 12 - Fax: +90 (232) 464 81 35

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