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14 Feb 2020: Acicular ferrite morphologies in a medium-carbon microalloyed steel. I. Madariaga, I. Guiterrez and H. K. D. H. Bhadeshia. Abstract. The influence of time and isothermal transformation temperature on the morphology of acicular ferrite in a

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.

14 Feb 2020: Coupled diffusional/displacive transformations: addition of substitutional alloying elements. S. A. Mujahid and H. K. D. H. Bhadeshia. Abstract. A published theory for 'coupled diffusional/displacive transformations' is extended to alloyed steels in

14 Feb 2020: Modelling Precipitation of Niobium Carbide in Austenite: Multicomponent Diffusion, Capillarity and Coarsening. N. Fujita and H. K. D. H. Bhadeshia. Abstract. The growth of niobium carbide in austenite involves the diffusion of both niobium and carbon

14 Feb 2020: Transformation Temperatures and Welding Residual Stresses in Ferritic Steels. J. A. Francis, H. J. Stone, S. Kundu, R. B. Rogge, H. K. D. H. Bhadeshia, P. J. Withers and L. Karlsson. Abstract. Residual stress in the vicinity of a weld can have a

14 Feb 2020: Microstructure evolution in irons and steels: a tribute to David V. Edmonds. J. G. Speer and H. K. D. H. Bhadeshia. The contributions of David Vernon Edmonds to the study of microstructural evolution over the past four decades are reviewed, in a

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: Precipitation Sequence in Niobium-Alloyed Ferritic Stainless Steel. N. Fujita, H. K. D. H. Bhadeshia and M. Kikuchi. Abstract. Niobium is an important alloying element in the design of heat-resistant ferritic stainless steels for automotive exhaust

14 Feb 2020: Welding Procedures and Type IV Cracking Tendency - an Experimental Study. J. A. Francis, W. Mazur and H. K. D. H. Bhadeshia. Abstract. Type IV cracking refers to the premature failure of a welded joint due to an enhanced rate of creep void formation

14 Feb 2020: The Conference, JWRI, March 2003. Download Powerpoint Presentation.

14 Feb 2020: STRONG BAINITIC STEELS BY CONTINUOUS COOLING TRANSFORMATION. G. Gomez, T. Perez and H. K. D. H. Bhadeshia. Abstract. Using metallurgical models, three steels were designed to obtain carbide-free bainitic structures in the as-rolled condition.

14 Feb 2020: Strong Ferritic-Steel Welds. H. K. D. H. Bhadeshia. Abstract. There are many steels which are stronger than 2000 MPa, with toughness values exceeding 100 MPa m. 1/2. and which have been in commercial service for many decades. Examples include the

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14 Feb 2020: Estimation of the Hot-Torsion Stress-Strain Curves in Iron Alloys using Neural Network Analysis. V. Narayan, R. Abad-Lera, B. Lopez, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. The hot-torsion stress-strain curves of steels have been

14 Feb 2020: Thermodynamic estimation of liquidus, solidus, Ae3 temperatures and phase compositions for low alloy multicomponent steels. A. A. B. Sugden and H. K. D. H. Bhadeshia. Abstract. In an attempt to develop improved models for the prediction of

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: Hard Bainite. H. K. D. H. Bhadeshia. Abstract. It is possible to create bainite in the form of long, slender crystals of ferrite whose scale compares with that of carbon nanotubes. These crystals are about 200 Å in thickness and are generated by

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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: The Transition from Bainite to Acicular Ferrite in Reheated Fe-Cr-C Weld Deposits. S. S. Babu and H. K. D. H. Bhadeshia. Abstract. Factors controlling the transition from acicular ferrite to bainite in Fe-Cr-C weld metals have been investigated. It

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: Comparison of the Microstructures and Wear Properties of Stellite Hardfacing Alloys Deposited by Arc Welding and Laser Cladding. S. Atamert and H. K. D. H. Bhadeshia. Abstract. The microstructure of cobalt base hardfacing alloys deposited by manual

14 Feb 2020: An Analysis of the Primary Microstructure of Cr and Mo Containing Low-Alloy Steel Welds. H.K.D.H. Bhadeshia, L.-E. Svensson and B. Gretoft. Abstract. Weld metal strength can be increased by alloying with Cr and Mo, without unduly sacrificing

14 Feb 2020: Bainite in Steels. H. K. D. H. Bhadeshia. Abstract. The bainite reaction does not fit neatly into any of the established categories of transformations, and shows characteristics which apparently contradict. This paper is a brief assessment of the

14 Feb 2020: Characterising Phase Transformations and their Effects on Ferritic Weld Residual Stresses with X-rays and Neutrons. H. Dai, J. A. Francis, H. J. Stone, H. K. D. H. Bhadeshia and P. J. Withers. Abstract. Weld residual stresses often approach, or

14 Feb 2020: Very Short and Very Long Heat-Treatments in the Processing of Steel. H. K. D. H. Bhadeshia. Abstract. It is conventionally assumed in the mass production of steels that the processing time must be reasonable and that the material must have uniform

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

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14 Feb 2020: Download PDF file of paper.

14 Feb 2020: Download PDF file of paper..

14 Feb 2020: Bayesian Neural Network Analysis of Fatigue Crack Growth Rate in Nickel Base Superalloys. H. Fujii, D. J. C. MacKay and H. K. D. H. Bhadeshia. Abstract. The fatigue crack growth rate of nickel base superalloys has been modelled using a neural

14 Feb 2020: A Tribute to Professor 'Jack' Christian. H. K. D. H. Bhadeshia. Abstract. Jack Christian's contributions to the theory of transformations in metals and alloys are distinguished by their lasting value and standard of scholarship. This paper is a

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14 Feb 2020: MODELING OF FUNDAMENTAL PHENOMENA IN WELDS. T. Zacharia, J. M. Vitek, J. A. Goldak, T. DebRoy, M. Rappaz and H. K. D. H. Bhadeshia. University of Cambridge. Abstract. Recent advances in the mathematical modeling of fundamental phenomena in welds are

14 Feb 2020: Microstructural Stability of Strong 9-12 wt% Cr Steels. H. K. D. H. Bhadeshia. Abstract. The time scales over which an electricity generating plant has to operate reliably are much greater than those available for the development of new alloys, most

14 Feb 2020: Understanding Mechanical Properties of Novel High Strength Steel Weld Metals Through High-Resolution Microstructural Investigations. E. Keehan, L. Karlsson, H. O. Andren and H. K. D. H. Bhadeshia. Abstract. Shielded metal arc welding and submerged

14 Feb 2020: BCC-BCC Orientation relationships, Surface Relief and Displacive Phase Transformations in Steel. H. K. D. H. Bhadeshia. Abstract. There exists a crystallographic degeneracy in the F.C.C. to B.C.C. transformation such that it is possible to

14 Feb 2020: Finite Element Simulation of Laser Spot Welding. A. De, S. K. Maiti, C. A. Walsh and H. K. D. H. Bhadeshia. Abstract. This work deals with a two-dimensional axi-symmetric finite element analysis of heat flow during laser spot formation taking into

14 Feb 2020: Complete Calculation of Steel Microstructure for Strong Alloys. J. Chen, H. K. D. H. Bhadeshia, S. Hasler, H. Roelofs and U. Ulrau. Abstract. Strong steels also have to be tough and hence rely on fine microstructures such as bainite or martensite,

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: Prediction of Cooling Rate and Microstructure in Laser Spot Welds. A. De, C. A. Walsh, S. K. Maiti and H. K. D. H. Bhadeshia. Abstract. Theoretical and experimental investigations have been carried out to examine the influence of laser power and

14 Feb 2020: Development of Microstructure in the Fusion Zone of Steel Weld Deposits. B. Gretoft, H.K.D.H. Bhadeshia, L.-E. Svensson. Abstract. A recent computer model for the prediction of microstructure in low-alloy steel weld deposits is modified to account

14 Feb 2020: Multiphase Structures in Case Hardening Steels following Continuous Cooling. H. Roelofs, S. Hasler, L. Chabbi, U. Urlau, J. Chen and H. K. D. H. Bhadeshia. Abstract. Case hardening steels produced from continuous cooling processes often exhibit a

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14 Feb 2020: Quantitative Evidence for the Mechanical Stabilisation of Bainite. S. B. Singh and H. K. D. H. Bhadeshia. Abstract. Metallographic observations have in the past demonstrated conclusively that the bainite transformation is susceptible to mechanical

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

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14 Feb 2020: Thermodynamically Stable Metal-Metal Composite. L. C. Hsiung and H. K. D. H. Bhadeshia. Abstract. Single-phase intermetallic compounds are often quite brittle. Experiments are reported in which a metallic composite consisting of three different

14 Feb 2020: Real and Extended Volumes in Simultaneous Transformations. T. Kasuya, K. Ichikawa, M. Fuji and H. K. D. H. Bhadeshia. Abstract. The relationship between real and extended volumes is expanded to an indefinite number of simultaneous transformation

14 Feb 2020: Solute-Segregation, Oxygen Content and the Transformation-Start Temperatures of Steel Welds. M. Strangwood and H.K.D.H. Bhadeshia. Abstract. The high cooling rates associated with most arc-welding processes causes non-equilibrium solidification so