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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: 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: 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: 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

14 Feb 2020: Acceleration of Low-Temperature Bainite. C. Garcia Mateo, F. G. Caballero and H. K. D. H. Bhadeshia. Abstract. Recent work has shown that bainitic ferrite plates produced by transformation at low temperatures can be as thin as 20 nm with a hardness

14 Feb 2020: Residual Stress Part 2 - Nature and Origins. 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 detrimental when it reduces the

14 Feb 2020: Low Temperature Bainite. C. Garcia-Mateo, F. G. Caballero and H. K. D. H. Bhadeshia. Abstract. It is demonstrated that bainite can be obtained by isothermal transformation at a temperature which is so low that the calculated diffusion distance of an

14 Feb 2020: Bainite Transformation Kinetics, Part I, Modified Model. G. I. Rees and H. K. D. H. Bhadeshia. Abstract. An earlier model for the overall transformation kinetics of bainite has been corrected and modified to be consistent with known details of the

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14 Feb 2020: Crystal structure of lithium niobate. H. K. D. H. Bhadeshia. The crystal structure of lithium niobate, space group R3c and lattice parameters 0.5418 and 1.3863 nm (H. E. Megaw, Acta Cryst. A24 [1968] 583). The chemical formula is LiNbO.

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14 Feb 2020: Quantitative Alloy Design Tools for Ni--Base Superalloys. Final Report EPSRC Grant GR/K23263. Principal Investigator: Dr. H.K.D.H. Bhadeshia. Introduction. The development of new nickel alloys for aeroengine applications is a difficult taks,

14 Feb 2020: The Bainite Transformation: Unresolved Issues. H. K. D. H. Bhadeshia. Abstract. A great deal of research, over many decades since the discovery of bainite, has revealed substantial information about the mechanism of the bainite transformation in

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14 Feb 2020: Some Phase Transformations in Steels. H. K. D. H. Bhadeshia. Abstract. Many essential properties of iron alloys depend on the atomic mechanism of phase change. Following a description of the mechanisms established for solid state phase

14 Feb 2020: Modelling of kinetics and dilatometric behaviour of non-isothermal pearlite-to-austenite transformation in an eutectoid steel. C. G. deAndres, C. Capdevila, F. G. Caballero and H. K. D. H. Bhadeshia. Abstract. The formation of austenite during the

14 Feb 2020: Effect of Strain Heterogeneity on Recrystallisation of PM2000. C. Capdevila, Y. L. Chen, A. R. Jones and H. K. D. H. Bhadeshia. Abstract. The recrystallisation behaviour of PM2000 oxide dispersion strengthened ferritic alloy has been investigated

14 Feb 2020: Bayesian Neural Network Model for Austenite Formation in Steels. L. Gavard, H. K. D. H. Bhadeshia, D. J. C. MacKay and S. Suzuki. Abstract. The formation of austenite during the continuous heating of steels has been investigated using neural network

14 Feb 2020: Topology of Grain Deformation. S. B. Singh and H. K. D. H. Bhadeshia. Abstract. The deformation of a polycrystalline material leads to changes in the amount of grain surface and grain edge per unit volume. These parameters are of importance in

14 Feb 2020: Bainite Transformation Kinetics, Part II, Non-uniform distribution of carbon. G. I. Rees and H. K. D. H. Bhadeshia. Abstract. The carbon concentration trapped in films of austenite between parallel platelets of bainite is often found to be much

14 Feb 2020: Estimation of the Mechanical Properties of Ferritic Steel Welds,. Part I: Yield and Tensile Strength. S. H. Lalam, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. The yield strength and ultimate tensile strength of ferritic steel weld metal

14 Feb 2020: Refinement and characterisation of a thermodynamically stable metal-metal composite. J. D. Robson and H. K. D. H. Bhadeshia. Abstract. The intermetallic compounds which are under consideration for use in aerospace applications often suffer from

14 Feb 2020: Reliability of Weld Microstructure and Property Calculations. H. K. D. H. Bhadeshia. Abstract. We depend in our everyday life on the performance of vast quantities of steel, which we use without giving it a second thought. This is possible because

14 Feb 2020: Estimation of the Mechanical Properties of Ferritic Steel Welds,. Part II: Elongation and Charpy Toughness. S. H. Lalam, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. In previous work we presented models which can be used to estimate the

14 Feb 2020: Microstructural change in high-temperature heat-affected zone of low-carbon weldable 13% Cr martensitic stainless steels. D. Carrouge, P. Woollin and H.K.D.H. Bhadeshia. Abstract. The microstructures that develop in the high temperature

14 Feb 2020: Impact toughness of C-Mn steel arc welds - Bayesian neural network analysis. H. K. D. H. Bhadeshia, D. J. C. MacKay and L.-E. Svensson. Abstract. Charpy impact toughness data for manual metal arc and submerged arc weld metal samples have been

14 Feb 2020: Calculation of Crystallographic Texture due to Displacive Transformations. H. K. D. H. Bhadeshia, H. Abreu and S. Kundu. Abstract. Displacive transformations involve the disciplined motion of atoms. As a result, there are clearly defined

14 Feb 2020: Modelling Creep Rupture Strength of Ferritic Steel Welds. D. Cole, C. Martin-Moran, A.G. Sheard, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. Recent changes in the design of steam turbine power plant have necessitated the replacement of

14 Feb 2020: Alternatives to the Ferrite-Pearlite Microstructures. H. K. D. H. Bhadeshia. Abstract. Structural steels based on a mixed microstructure of allotriomorphic ferrite and pearlite have a well-established history of cost-effectiveness and reliability.

14 Feb 2020: Mechanical Stabilisation of Bainite. S. B. Singh and H. K. D. H. Bhadeshia. IIT Kharagpur (India) and Cambridge University (U.K.). Abstract. Bainite, like martensite, forms by a displacive mechanism of transformation. Based on microstructural

14 Feb 2020: Part IB Metals and Alloys. Course A: Worked Examples (20-22). H. K. D. H. Bhadeshia. Question 20. Describe an experiment which can prove that diffusion occurs by a vacancy mechanism rather than a mechanism in which adjacent atoms simply swap

14 Feb 2020: Characteristics of High-Power Diode-Laser Welds for Industrial Assembly. C.A. Walsh, H.K.D.H. Bhadeshia, A. Lau, B. Matthias, R. Oesterlein, and J. Drechsel. Abstract. Recent progress in available beam power and beam quality has meant that high

14 Feb 2020: Optimisation of a Multiphase Intermetallic Metal-Metal Composite Material. J. D. Robson, N. Duvauchelle, A. Lugan, J. Street and H. K. D. H. Bhadeshia. Abstract. Metal-Metal composites (MeMeC's) manufactured by coextruding beta Ni(Al,Ti), beta' Ni.

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14 Feb 2020: Ferritic Power Plant Steels: Remanent Life Assessment and The Approach to Equilibrium. H. K. D. H. Bhadeshia, A. Strang and D. J. Gooch. Abstract. The steels used in the power generation industry are almost always given a severe tempering

14 Feb 2020: The Bruscato Factor in the Temper Embrittlement of Welds. S. H. Lalam, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. Published experimental data on the tendency for 2.25Cr1Mo steel welds to undergo impurity-induced temper embrittlement have

14 Feb 2020: 10. th. International Aachen Welding Conference, 22-25 October 2007. This conference was held in honour of Professor Ulrich Dilthey's retirement after many decades of leadership in the field of welding. Dusseldorf Airport. Dusseldorf Central Railway

14 Feb 2020: Gaussian Process Modelling of Austenite Formation in Steel. C. A. L. Bailer-Jones, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. We introduce the Gaussian process model for the empirical modelling of the formation of austenite during the

14 Feb 2020: Design of New Creep-Resistant Nickel-Base Superalloys for Power Plant Applications. F. Tancret, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. A Gaussian processes computer program has been used to model the mechanical properties of

14 Feb 2020: Hard Bainite. C. Garcia Mateo, F. G. Caballero and H. K. D. H. Bhadeshia. Abstract. It is demonstrated that in a high-carbon steel where carbide precipitation is suppressed, bainite can be obtained by isothermal transformation at temperatures as low

14 Feb 2020: New Welding Alloys: Computational Methods. L.-E. Svensson and H. K. D. H. Bhadeshia. Abstract. Metals are useful materials because of their sophistication and low cost. The many phase transformations and process variables associated with them can be

14 Feb 2020: Design of Creep-Resistant Steels. H. K. D. H. Bhadeshia. Abstract. Creep resistant steels must be reliable over very long periods of time in severe environments. Their microstructures have to be very stable, both in the wrought and in the welded

14 Feb 2020: Fe-Cr-C hardfacing alloys for high-temperature applications. L.-E. Svensson, B. Gretoft, B. Ulander and H.K.D.H. Bhadeshia. Abstract. The microstructure and phase chemistry of a Fe-34Cr-4.5C wt% hardfacing alloy has been investigated using

14 Feb 2020: Quasichemical Model for Interstitial Solutions. H. K. D. H. Bhadeshia. Abstract. An ideal solution is one in which the enthalpy of mixing is zero so that the only contribution to the free energy of mixing comes from the change in the configurational