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4 Jul 2024: Martensite and Martensitic Phase Transformations. H. K. D. H. Bhadeshia. Evolution of martensite. A movie of martensitic transformation in Fe-0.18C-0.2Si-0.9Mn-2.9Ni-1.5Cr-0.4Mo wt% steel, using confocal laser microscopy. The time and temperature

4 Jul 2024: Review Articles. General Articles. Science for 5 year olds. Books. Free.

4 Jul 2024: Book on bainite (electronic version available for free download). Movies about Martensite and Bainite.

28 Jun 2024: Steels for rails. W. Solano-Alvarez and H. K. D. H. Bhadeshia. Abstract. Transport by rail is an efficient way of moving goods and people while managing problems such as congestion and the consequences on the environment. The relatively low energy

4 Jul 2024: Retained Austenite. Crystallography of Austenite. Theory and Significance of Retained Austenite in Steels. Ph.D. thesis, by Harry Bhadeshia, University of Cambridge, 1979. Reaustenitisation of some Alloy Steels. Ph.D. thesis, by Ursula Ruth Lenel,

27 Jun 2024: Tiling and crystallography. The image below is of tiling done by Stoyan Smoukov (who kindly provided the image) at a sink in his house. The tiles have a clever shape so that they can tesselate to fill completely, a two-dimensional surface. Each tile

4 Jul 2024: Computer Modelling of the Yield Strength of Mixed Microstructures of Bainite and Martensite. C. H. Young and H. K. D. H. Bhadeshia. Abstract. The strength of mixed microstructures of bainite and martensite can peak at an intermediate volume fraction

4 Jul 2024: Computer simulated image of the dendritic solidification of pure nickel. The simulation is of "free growth", i.e., the solid is growing without contact with anything but the liquid.

4 Jul 2024: Download PDF file of paper from HAL open access.

4 Jul 2024: Aluminium-Silicon Casting Alloys. R. Cornell and H. K. D. H. Bhadeshia. A discussion of solidification and its effects can be found in a set of lectures available online. Information on the friction stir welding of these alloys is also available.

4 Jul 2024: The Incomplete Bainite Reaction: Possible Reasons for Apparent Differences in TEM and Atom-Probe Determination of Austenite Carbon Content. D. Hall, H. K. D. H. Bhadeshia and W. Stobbs. Abstract. Carbon segregation following the transformation of

4 Jul 2024: Editing your. bashrc file. Go to your home space 'root directory' (type cd). Use your favorite text editor (e.g. type xemacs. bashrc). There should be a line looking like: PATH=$PATH:blabla:. If there is not, just add one. In the case of staroffice,

4 Jul 2024: The analysis is shown to be consistent with (a) a linear dependence of the activation energy for isothermal nucleation, on the transformation free energy change, (b) the sub-unit mechanism of

4 Jul 2024: Download PDF file of paper from HAL open access.

4 Jul 2024: The graphite flakes, which are rosettes in three dimensions, have a low density and hence compensate for the freezing contraction, thus giving good castings free from porosity.

4 Jul 2024: A single-crystal blade is free from γ/γ grain boundaries. Boundaries are easy diffusion paths and therefore reduce the resistance of the material to creep deformation.

4 Jul 2024: An even higher sulphur concentration may be used in free-machining stainless steels where precipitated sulphur helps break up the machining chips. ... The resulting chromium-depleted zone at the grain boundaries makes them susceptible to intergranular

4 Jul 2024: Figure 1: The free energy due to the trapping of carbon in martensite, as a function of its carbon concentration. ... There are sub-grain boundaries due to polygonisation and otherwise clean ferrite almost free from dislocations.