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14 Feb 2020: Modelling simultaneous precipitation reactions in austenitic stainless steels. T. Sourmail and H.K.D.H. Bhadeshia. Abstract. A physical model has been developed for simultaneous precipitation reactions in austenitic stainless steels, taking into

14 Feb 2020: Very Strong Low Temperature Bainite. F. G. Caballero, H. K. D. H. Bhadeshia, K. J. A. Mawella, D. G. Jones and P. Brown. Abstract. Bainite has been obtained by heat treatment at temperatures as low as 125. o. C in a high carbon, high silicon steel.

14 Feb 2020: Welding Procedures and Type IV Phenomena. J. A. Francis, W. Mazur and H. K. D. H. Bhadeshia. Abstract. In this work, we attempt a quantitative estimation of the type IV rupture stress for welds in ferritic power plant steels containing 9 Ð 12 wt %

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14 Feb 2020: Design of novel high-strength bainitic steels. Part I. F. G. Caballero, H. K. D. H. Bhadeshia,. K. J. A. Mawella, D. G. Jones and P. Brown. Abstract. Mixed microstructures consisting of fine plates of upper bainitic ferrite separated by thin films

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14 Feb 2020: Modelling and characterisation of Mo. 2. C precipitation and cementite Dissolution during the tempering of Fe-C-Mo martensitic steel. S. Yamasaki and H.K.D.H. Bhadeshia. Abstract. The precipitation and Ostwald ripening behaviour of needle shaped Mo.

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14 Feb 2020: 52nd Hatfield Memorial Lecture: Large Chunks of Very Strong Steel. H. K. D. H. Bhadeshia. Abstract. Most new materials are introduced by selectively comparing their properties against those of steels. Steels set this standard because iron and its

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14 Feb 2020: Design of novel high-strength bainitic steels. Part II. F. G. Caballero, H. K. D. H. Bhadeshia,. K. J. A. Mawella, D. G. Jones and P. Brown. Abstract. A combination of thermodynamic, kinetic and mechanical property models and physical metallurgy

14 Feb 2020: Mathematical Models in Materials Science. H. K. D. H. Bhadeshia. Abstract. Modelling has now become a routine part of materials science. It is appropriate therefore to assess some of the successes and failures of the method and to understand how and

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14 Feb 2020: A Classical Thermodynamic approach to Void Nucleation in Irradiated Materials. R. Kemp, G. A. Cottrell and H. K. D. H. Bhadeshia. Abstract. One of the major problems in building a future fusion power station is the development of suitable structural

14 Feb 2020: Properties of Fine-Grained Steels Generated by Displacive Transformation. H. K. D. H. Bhadeshia. Abstract. It has been possible in recent times to make large quantities of steels in which the controlling scale is 20 nm or less, i.e., comparable to

14 Feb 2020: TRIP-assisted steels: cracking of high-carbon martensite. S. Chatterjee and H. K. D. H. Bhadeshia. Abstract. Modern TRIP assisted steels contain retained austenite with carbon concentrations in excess of 1 wt-%. Some of their mechanical properties,

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14 Feb 2020: Transformation Texture in Deformed Stainless Steel. Saurabh Kundu and H. K. D. H. Bhadeshia. Abstract. The development of transformation texture in a deformed austenitic stainless steel has been modelled using the crystallographic theory of

14 Feb 2020: The OTIS KING Calculator. H. K. D. H. Bhadeshia. Before electronic calculators, slide rules were used to do quick estimates. The accuracy of a slide rule increases with its length. This is an ingenious slide rule, short in absolute length but very

14 Feb 2020: Designing low carbon, low temperature bainite. Hong-Seok Yang and H. K. D. H. Bhadeshia. Abstract. The possibility of producing bainite at low temperatures by suppressing transformation using substitutional solutes has been investigated, as an

14 Feb 2020: Mechanical stabilisation of austenite. S. Chatterjee, H. S. Wang, J. R. Yang and H. K. D. H. Bhadeshia. Abstract. A theory has been developed for the mechanical stabilisation of plastically deformed austenite by balancing the force which drives the

14 Feb 2020: M. 4. C. 3. Precipitation in Fe-C-Mo-V Steels and Relationship to Hydrogen Trapping. S. Yamasaki and H. K. D. H. Bhadeshia. Abstract. Strong steels suffer from embrittlement due to dissolved hydrogen, a phenomenon which can be mitigated by trapping

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14 Feb 2020: Influence of Silicon on Cementite Precipitation in Steels. E. Kozeschnik and H. K. D. H. Bhadeshia. Abstract. The mechanism by which relatively small concentrations of silicon influence the precipitation of cementite from carbon--supersaturated

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14 Feb 2020: Evolution of strength and coercivity during annealing of FeCo based alloys. Department of Materials Science and Metallurgy, University of Cambridge. Pembroke Street, Cambridge CB2 3QZ, U.K. Scripta Mater 2004:51, p589-591. Abstract. Iron-cobalt

14 Feb 2020: Three-Dimensional Atom Probe Analysis of Carbon Distribution in Low-Temperature Bainite. M. Peet, S. S. Babu, M. K. Miller and H. K. D. H. Bhadeshia. The images presented below are from research described in the Scripta Materialia article available

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24 Jul 2020: Each is available for download in acrobat (.pdf) and gzipped postscript (.ps.gz) form, from the links below. ... converting the files, and grateful also to Jon Peatfield and Elie Bassouls who gave further advice on the technicalities of file conversions.

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14 Feb 2020: Quantitative Metallography of Deformed Grains. Q. Zhu, C. M. Sellars. H. K. D. H. Bhadeshia. Abstract. The effect of plastic deformation on the grain boundary surface area per unit volume and edge length per unit volume is examined using two methods.

14 Feb 2020: Changes in Toughness at Low Oxygen Concentrations in Steel Weld Metals. Shinichi Terashima and H. K. D. H. Bhadeshia. Abstract. Oxides in steel weld metals can initiate fracture or can improve toughness by influencing the development of beneficial

14 Feb 2020: Size distribution of oxides and toughness of steel weld metals. Shinichi Terashima and H. K. D. H. Bhadeshia. Abstract. Experiments have been conducted to modify the size distribution of oxide particles in steel weld metals which have predominantly

14 Feb 2020: Mechanically Alloyed Metals. H. K. D. H. Bhadeshia. Abstract. Mechanical alloying involves the severe deformation of mixtures of powders until they form the most intimate of atomic solutions. Inert oxides can also be introduced to form a uniform

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14 Feb 2020: Annual Lecture, Royal Microscopical Society (2000): Mechanically Alloyed Metals. H. K. D. H. Bhadeshia. Abstract. Mechanical alloying involves the severe deformation of mixtures of powders until they form the most intimate of atomic solutions. Inert

14 Feb 2020: A Thermodynamic Analysis of Isothermal Transformation Diagrams. H. K. D. H. Bhadeshia. Abstract. A thermodynamic model has been developed to allow the prediction of isothermal transformation diagrams for steels, based on their chemical composition.

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14 Feb 2020: Kinetics of Simultaneous Transformations. H. K. D. H. Bhadeshia. Abstract. It is often the case that a number of solid--state transformations occur concurrently, starting from the same parent phase. The transformations may occur at different rates,

14 Feb 2020: Heterogeneous Deformation and Recrystallisation of Iron-Base ODS PM2000 Alloy. C. Capdevila, Y. L. Chen, N. C. K. Lassen, A. R. Jones and H. K. D. H. Bhadeshia. Abstract. The recrystallisation behaviour of PM2000 oxide dispersion strengthened

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14 Feb 2020: Three-Dimensional Atom Probe Analysis of Carbon Distribution in Low-Temperature Bainite. M. Peet, S. S. Babu, M. K. Miller and H. K. D. H. Bhadeshia. Abstract. A bainitic microstructure with fine ferrite plates (20 to 40 nm) in a matrix of

14 Feb 2020: Modelling of Phase Transformations in Steel Weld Metal. H. K. D. H. Bhadeshia. Abstract. This paper deals with some of the latest issues in the modelling of steel weld microstructures, building on work already published in the open literature. The

14 Feb 2020: Welding Procedures and Type IV Phenomena. J. A. Francis, W. Mazur and H. K. D. H. Bhadeshia. Abstract. In this work, we attempt a quantitative estimation of the type IV rupture stress for welds in ferritic power plant steels containing 9-12 wt. %

14 Feb 2020: Residual Stress Part 1 - Measurement Techniques. P. J. Withers and H. K. D. H. Bhadeshia. Abstract. Residual stress is that which remains in a body which is stationary and at equilibrium with its surroundings. It can be very detrimental to the

14 Feb 2020: Synchrotron X-ray Studies of Austenite and Bainitic Ferrite. H. J. Stone, M. J. Peet, H. K. D. H. Bhadeshia, P. J. Withers, S. S. Babu, E. D. Specht. Abstract. High resolution synchrotron X--ray diffraction has been used to conduct in situ studies

14 Feb 2020: Plastic strain due to twinning in austenitic TWIP steels. B. Qin and H. K. D. H. Bhadeshia. Abstract. Twinning induced plasticity steels are austenitic alloys in which mechanical twinning is a prominent deformation mode, and which exhibit

14 Feb 2020: The Charpy Impact Transition Temperature for some Ferritic Steel Welds. S. H. Lalam, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. Body-centered cubic iron undergoes a ductile-brittle fracture transition as a function of temperature. A common