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14 Feb 2020: Phase Transformations Contributing to the Properties of Modern Steels. H. K. D. H. Bhadeshia. The role of phase transformation theory in contributing to the development of innovative steels is assessed, focusing on examples where the relationship is

14 Feb 2020: Estimation of Bainite Plate Thickness in Low-Alloy Steels. S. B. Singh and H. K. D. H. Bhadeshia. Abstract. Published experimental data on the thickness of bainite plates in silicon-rich steels have been analysed in order to develop a quantitative

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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

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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: Performance of neural networks in materials science. H. K. D. H. Bhadeshia, R. C. Dimitriu, S. Forsik, J. H. Pak and J. H. Ryu. Abstract. Neural networks are now a prominent feature of materials science with rapid progress in all sectors of the

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14 Feb 2020: Bimodal Size-Distribution of Bainite Plates. Kazu Hase, C. Garcia-Maeo and H. K. D. H. Bhadeshia. Abstract. There are two well-known phenomena associated with the bainite reaction, both of which have been exploited here to enhance the mechanical

14 Feb 2020: Design of new Fe-9CrWV reduced-activation martensitic steels for creep properties at 650C. Y. de Carlan, M. Murugananth, T. Sourmail and H. K. D. H. Bhadeshia. Abstract. New low-activation martensitic steels for creep resistance between 600 and 700C

14 Feb 2020: First-principles calculations and the thermodynamics of cementite. J. H. Jang, I. G. Kim and H. K. D. H. Bhadeshia. Abstract. Thermodynamic data for the substitution of silicon and manganese in cementite have been estimated using first-principles

14 Feb 2020: Personal perspective on microstructure of steels: 25th anniversary of MST and collection of papers in honour of Sir Robert Honeycombe. H. K. D. H. Bhadeshia. Abstract. I was assigned the task in this silver jubilee of Materials Science and

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: Dual orientation and variant selection during diffusional transformation of austenite to allotriomorphic ferrite. Dae Woo Kim, Dong-Woo Suh, R. S. Qin and H. K. D. H. Bhadeshia. The crystallographic relationship between austenite and grain boundary

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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: Grain Boundary Mobility in Fe-Base Oxide Dispersion Strengthened PM2000 Alloy. C. CAPDEVILA, Y. L. CHEN, A. R. JONES and H. K. D. H. BHADESHIA. It has been possible to measure the average interfacial velocities of grain boundaries during the process

14 Feb 2020: Evolution of strength and coercivity during annealing of FeCo based alloys. T. Sourmail. Abstract. Iron-cobalt alloys are used as soft-magnetic materials in circumstances where a high magnetic saturation is important. There is confusion in the

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14 Feb 2020: Stability of Retained Austenite in TRIP-Assisted Steels. M. Sherif, C. Garcia Mateo, T. Sourmail and H. K. D. H. Bhadeshia. Abstract. A theory is developed for the quantitative representation of the strain--induced transformation of retained

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14 Feb 2020: Bainite formation influenced by large stress. K. Hase, C. Garcia Mateo and H. K. D. H. Bhadeshia. Abstract. By using an iron alloy that transforms slowly to bainite at a low temperature, it has been possible to study the development of the upper

14 Feb 2020: δ-TRIP Steel. S. Chatterjee, M. Murugananth and H. K. D. H. Bhadeshia. Abstract. A combination of neural networks and genetic algorithms has been used to design a TRIP-assisted steel in which the silicon concentration is kept low. In this context

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14 Feb 2020: High Strength Steel Weld Metals: Developments with Ni and Mn. E. Keehan, L. Karlsson, M. Marimuthu, H.-O. Andren and H. K. D. H. Bhadeshia. Chalmers University (Sweden), ESAB AB (Sweden) and Cambridge University (U.K.). Abstract. New development

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14 Feb 2020: Effects of Filler Metal Transformation Temperature on Residual Stresses in a High Strength Steel Weld. J. A. Francis, H. J. Stone, S. Kundu, H. K. D. H. Bhadeshia, R. B. Rogge, P. J. Withers and L. Karlsson. Abstract. Residual stress in the vicinity

14 Feb 2020: Creep strength of high-Cr ferritic steels designed using neural networks and phase stability calculations. F. Masuyama and H. K. D. H. Bhadeshia. Abstract. The highest creep rupture strength of recent 9-12%Cr steels which have seen practical

14 Feb 2020: Estimation of Type IV Cracking Tendency in Power Plant Steels. J. A. Francis, W. Mazur and H. K. D. H. Bhadeshia. Abstract. The cracking of welded joints is usually classified according to the position of the crack; Type I and Type II modes occur

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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: Direct Analysis of Twinning in Low Alloy Martensite. H. K. D. H. Bhadeshia and D. V. Edmonds. University of Cambridge. Abstract. The deformation processes involved in the formation of low alloy martensites appear from microstructural observations to

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.

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14 Feb 2020: Analysis of the Strength and Ductility of Welding Alloys for HSLA Shipbuilding-Steels. E. A. Metzbower, J. J. DeLoach, S. H. Lalam and H. K. D. H. Bhadeshia. Abstract. There are considerable demands for the development of weld metals for

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: Effect of Stress and Strain on Formation of Bainite in Steels. H. K. D. H. Bhadeshia. Abstract. The growth of bainite causes coordinated displacements of atoms during the motion of its glissile transformation interface. The response of such a

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: New Developments with C-Mn-Ni High-Strength Weld Metals, Part A - Microstructure. E. Keehan, L. Karlsson, H.-O. Andrén and H. K. D. H. Bhadeshia. Abstract. The relationship between solute content, microstructure and properties has been clarified

14 Feb 2020: Microstructure of High-Strength Steel Refined with. Intragranularly Nucleated Widmanstatten Ferrite. A. Ali and H. K. D. H. Bhadeshia. Abstract. A method has been developed to refine the microstructure of clean, high strength martensitic steels by

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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

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14 Feb 2020: Optimization of Neural Network for Charpy Toughness of Steel Welds. J. H. Pak, J. H. Jang, H. K. D. H. Bhadeshia and L. Karlsson. Abstract. By their very nature, empirical models must be treated with care in order to avoid predictions which are not

14 Feb 2020: Molybdenum Carbide in Tempered Martensite. S. Yamasaki and H.K.D.H. Bhadeshia. Crystal Structure of Mo. 2. C. Molybdenum carbide (Mo. 2. C) can occur in many crystalline forms, but that which precipitates in steels has a close-packed hexagonal