6 points, SCA Band 2, 0.125 EFTSL
Undergraduate - Unit
Refer to the specific census and withdrawal dates for the semester(s) in which this unit is offered.
- First semester 2018 (On-campus)
Bonding: atomic/molecular arrangement. Crystal systems: directions and planes, stereographic projection; metallic, ionic and ceramic crystals. Defects; vacancies and interstitials; dislocations; stacking faults, twin and grain boundaries. Thermodynamics: condensed systems; entropy, Gibbs free energy; ideal and non-ideal solutions; surface energy and microstructure. Phase equilibria and microstructures: Gibbs phase rule; free energy diagrams; phase diagrams; deviations from ideality, phase separation; ordering; eutectic, eutectoid, peritectic and peritectoid reactions; non-equilibrium microstructures, implications for physical properties.
On successful completion of this course students will:
- Understand the definitive characteristics of the key classes of materials and their origins in electronic structure, bonding and atomic/molecular arrangement;
- Have a thorough knowledge of elementary crystallography, including crystal lattices, elements of symmetry, crystal systems and their representation
- Recognise common prototype structures for metallic, ionic and ceramic crystals, and possess an understanding of the factors influencing the development of these structures
- Understand the geometry, crystallography and elastic properties of common crystal defects, and their effects on crystal properties
- Understand the derivation of binary and ternary alloy phase diagrams from the laws of thermodynamics, in particular the free energy concept, including positive and negative deviations from ideality
- Appreciate the concepts of equilibrium between multiple phases in binary alloy systems and their embodiment in Gibbs' Phase Rule and the concept of chemical potential
- Understand the microstructures to be expected for various binary material systems exhibiting, in particular, complete solid solubility, the eutectic, eutectoid, peritectic or peritectoid reactions
- Appreciate aspects of microstructure controlling solid solubility and the role of surfaces and interfaces in controlling microstructures
- Possess an elementary grasp of the consequences of nonequilibrium in binary systems
- Appreciate the influence of microstructures on some physical properties
- Have become familiar with the resources of a Library for acquiring information of specific interest to a Materials Engineer
- Have gained basic laboratory skills applied to study the microstructure of materials
- Have an ability to communicate within a team in carrying out laboratory work
- Have an ability to keep accurate laboratory records and to prepare a formal report on an experiment.
Laboratory work: 20%
Written examination: (2 hours) 50%
Students are required to achieve at least 45% in the total continuous assessment component (assignments, tests, mid-semester exams, laboratory reports) and at least 45% in the final examination component and an overall mark of 50% to achieve a pass grade in the unit. Students failing to achieve this requirement will be given a maximum of 45% in the unit.
3 hours lecture/tutorial, 1 hour laboratory and 8 hours of private study per week.
See also Unit timetable information