Dissemination of IT for the Promotion of Materials Science (DoITPoMS)

DoITPoMS TLP Library

TLP Library

Teaching and learning packages (TLPs) are self-contained, interactive resources, each focusing on one area of Materials Science.

TLPs containing HTML5 animations/simulations are labelled with the tag . We have found that often the HTML5 animations render better in Microsoft Edge, so if your favourite browser does not work very well with them, please try an alternative.

Additive Manufacturing

This TLP provides an introduction to additive manufacturing methods, their advantages and limitations, and how the properties of printed objects are affected by varying printing parameters.

Analysis of Deformation Processes

This TLP builds upon the introduction to yield criteria covered in the Stress analysis and Mohr's circle TLP and introduces a range of methods commonly used to study metal forming processes.

Atomic Force Microscopy

Provides a brief introduction to atomic force microscopy (AFM), some of the ways it is commonly used and some of the problems faced.

Brittle Fracture

What determines when a material will break, and whether failure will be catastrophic or more gradual. Cracking is controlled by the energy changes that occur - it is not the stress at the crack tip that is important..

Casting

This TLP introduces a number of important processes through which metallic items can be fabricated from molten metal. As well as detailing the practical aspects of these manufacturing processes, attention is given to the important parameters which determine the microstructure of the finished items.

Creep Deformation of Metals

Creep is a major concern, since it can cause materials to progressively deform, and possibly to fail, under applied stresses below their yield stress. This is particularly likely at elevated temperatures. In this package, the main mechanisms of creep are outlined and some analytical expressions presented that are used to represent its progression. Testing procedures are described, covering both simple uniaxial loading and more complex test geometries. It is shown how creep characteristics can be inferred from the outcome of such tests, requiring in some cases numerical (finite element) modelling of the process. Information is also presented about the design of highly creep-resistant materials.

Crystallographic Texture

This teaching and learning package (TLP) introduces the concept of texture in crystalline materials such as common metals and metallic alloys.

Introduction To Deformation Processes

This teaching and learning package covers the fundamentals of metal forming processes.

Diffraction and Imaging

A brief summary of diffraction and imaging using an optical system.

Ellingham Diagrams

The Ellingham diagram is a tool most often used in extraction metallurgy to find the conditions necessary for the reduction of the ores of important metals. This Teaching and Learning Package incorporates an interactive Ellingham diagram. This diagram can be used to quickly and simply find a range of thermodynamic data relating to many metallurgical reactions.

Examination of a Manufactured Article

This TLP provides an introduction to the deconstruction and investigation of the materials and processes used in an everyday item or article.

Indexing Electron Diffraction Patterns

An introduction to the indexing of diffraction patterns.

The Jominy End Quench Test

Discusses the aims, method and use of results of a test for the hardenability of steel.

Kinetics of Aqueous Corrosion

This teaching and learning package (TLP) introduces the mechanism of aqueous corrosion and the associated kinetics.

Mechanical Testing of Metals

This teaching and learning package (TLP) introduces the basic mechanics involved in mechanical testing of metals, first outlining the meaning of deviatoric and hydrostatic stresses and strains, followed by definitions of true and nominal values and then covering the idea of constitutive laws that characterise the development of plastic deformation. The issues involved in carrying out conventional uniaxial (tensile and compressive) tests, and interpreting experimental outcomes, are then described. Finally, hardness testing is explained, followed by the development of a related technique involving indentation testing that allows full stress-strain curves to be obtained. All of the analyses are based on a continuum treatment of plastic deformation, with extensive numerical modelling, using the Finite Element Method (FEM).

Microstructural Examination

This teaching and learning package (TLP) looks at how what we see in micrographs relates to equilibrium phase diagrams and cooling routes for alloy systems.

Optical Microscopy

An introduction to the use of optical microscopes. It introduces the different types of microscope used to examine specimens and how to set them up correctly. There is also an introduction to specimen preparation.

Introduction To Photoelasticity

This tutorial is based on lab work within the Department of Materials Science and Metallurgy at the University of Cambridge. The tutorial provides an introduction to the topic of photoelasticity and preparation for lab work. Photographs illustrate many features of birefringence in polymers under polarised light.

Powder processing

This teaching and learning package (TLP) provides an introduction to the dynamics of powder particles in fluid streams and relates this background to issues such as the time for which such particles remain suspended in air or water and the likelihood of them striking obstacles in their path. It also presents a description of the main routes by which (ceramic or metallic) powders are converted to solid objects.

Reciprocal Space

This TLP shows the construction of reciprocal lattices from real ones, use of the Ewald sphere for diffraction experiments and some other applications of reciprocal space.

Recycling of Metals

The next time you drain a canned beverage or take a journey in a car, you might like to think about what will happen to it when it reaches the end of its useful life. This teaching and learning package will look at metals recycling from a materials science viewpoint - not simply outlining the need for recycling, but explaining the complex scientific principles behind some aspects of the recycling process itself.

Solidification of Alloys

This teaching and learning package (TLP) is an introduction to how solute affects the solidification of metallic alloys.

The Stereographic Projection

This TLP covers the use of the Stereographic projection and Wulff nets.

Stress Analysis and Mohr's Circle

This teaching and learning package provides an introduction to the theory of metal forming. It discusses how stress and strain can be presented as tensors, and ways of identifying the principal stresses. Suitable yield criteria to treat metals and non-metals are also presented.

Transmission Electron Microscopy

Transmission electron microscopy is a very important tool in materials science for investigating the fine-scale structure of materials. This TLP serves as an introduction to the basic concepts and structure of the transmission electron microscope.

X-ray Diffraction Techniques

This teaching & learning package provides an introduction to X-ray diffraction. It describes the main crystallographic information that can be obtained and experimental methods most commonly used.