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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: Tensile behaviour of thermally-stable nanocrystalline bainitic-steels. G. M. A. M. El-Fallah and H. K. D. H. Bhadeshia. Abstract. The deformation behaviour of two nanostructured bainitic steels designed to ensure the thermal stability of the

14 Feb 2020: The austenite-ferrite transformation in enhanced-niobium, low-carbon steel. P. Yan and H. K. D. H. Bhadeshia. Abstract. The austenite to ferrite transformation characteristics of a commercial high strength line pipe steel containing 0.05 wt-% carbon

14 Feb 2020: Role of fracture toughness in impact-abrasion wear. A. R. Chintha, K. Valtonen, V.-T. Kuokkala, S. Kundu, M.J. Peet, H.K.D.H. Bhadeshia. Abstract. Two new low alloyed steels have been developed with different fracture toughness values but at similar

14 Feb 2020: Modelling and characterisation of V. 4. C. 3. precipitation and cementite dissolution during the tempering of Fe-C-V martensitic steel. S. Yamasaki and H.K.D.H. Bhadeshia. Abstract. The precipitation and Ostwald ripening behaviour of V. 4. C. 3.

14 Feb 2020: Effect of a two-stage heat-treatment on the microstructural and mechanical properties of a maraging steel. T. H. Simm, L. Sun, D. R. Galvin, P. Hill, M. Rawson, S. Birosca, E. P. Gilbert, H. K. D. H. Bhadeshia and K. Perkins. Abstract. Maraging

14 Feb 2020: Shear-band structure in ballistically tested carbide-free bainitic steels. L. C. D. Fielding and H. K. D. H. Bhadeshia. Abstract. Adiabatic shear bands represent intense plastic deformation that is localised because the rate at which the heat

14 Feb 2020: Download PDF file of paper..

14 Feb 2020: Crystallographic Texture of Induction-welded and Heat-treated Pipeline Steel. P. Yan, Ö. E. Güngör, P. Thibaux and H. K. D. H. Bhadeshia. Abstract. Large-diameter steel pipes are produced by induction seam-welding followed by induction-assisted

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: SANS and APT study of precipitate evolution and strengthening in a maraging steel. T. H. Simm, L. Sun, D. R. Galvin, E. P. Gilbert, D. Alba Venero, Y. Li, T. L. Martin, P. A. G. Gabot, M. P. Moody, P. Hill, H. K. D. H. Bhadeshia, S. Birosca, M. J.

14 Feb 2020: Materials Science and Engineering A 556 (2012) 601-606. Download Archives of Related Unpublished Data.

14 Feb 2020: Crystallography of Widmanstätten austenite in duplex stainless steel weld metal. J. W. Abtibol Menezes, H. Abreu, S. Kundu, H. K. D. H. Bhadeshia and P. M. Kelly. Abstract. Two kinds of austenite grow from δ-ferrite during the cooling of the

14 Feb 2020: Developments in Martensitic and Bainitic Steels: Role of The Shape Deformation. H. K. D. H. Bhadeshia. Abstract. Steels can be designed to exploit the coordinated motion of atoms during the bainite and martensite reactions. In this way it has been

14 Feb 2020: Are χ (Hägg), η and ε carbides transition-phases relative to cementite in steels? H. K. D. H. Bhadeshia, A. R. Chintha and S. Lenka. Abstract. Hägg carbide (χ) is, during the tempering of carbon-rich martensite, referred to as a transition

14 Feb 2020: Novel strong maraging steel with balanced ductility and creep resistance achieved by fine β-NiAl and Laves phase precipitates. L. Sun, T. H. Simm, T. L. Martin, S. McAdam, D. R. Galvin, K. M. Perkins, P. A. J. Bagot, M. P. Moody, S. W. Ooi, P. Hill,

14 Feb 2020: Effect of tempering heat treatment on the CO. 2. corrosion resistance of quench-hardened Cr-Mo low-alloy steels for oil and gas applications. Clara. Escrivà-Cerdán, Steve W. Ooi, Gaurav R. Joshi, Roberto Morana, H.K.D.H. Bhadeshia, Robert Akid.

14 Feb 2020: Characterisation of Severely Deformed Austenitic Stainless Steel Wire. Han-Shen Wang, J. R. Yang and H. K. D. H. Bhadeshia. National Taiwan University. Materials Science and Engineering. 1 Rosevelt Road, Section 4, Taipei, Taiwan ROC (106).

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

14 Feb 2020: Cementite. H. K. D. H. Bhadeshia. Abstract. Cementite is present in the vast majority of steels, in meteorites, possibly at the core of the Earth, and has uses in its pure form. It is now known that it can deviate from its strict stoichiometric

14 Feb 2020: First-principles calculations of elastic constants for epsilon-carbide and the consequences. Jae Hoon Jang, Seong-Jun Park, Tae-Ho Lee and H. K. D. H. Bhadeshia. Abstract. The elastic constants of ε-carbide at 0 K and zero pressure have been

14 Feb 2020: Interface Engineering. Seminars by Professor Tadao Watanabe, Sendai, Tohoku University. Professor Watanabe has made distinguished contributions to the study of interfaces and of their consequences on the properties of materials, over many decades.

14 Feb 2020: Degradation of nanostructured bainitic steel under rolling contact fatigue. W. Solano-Alvarez, E. J. Pickering and H. K. D. H. Bhadeshia. Abstract. The consequences of rolling contact fatigue on a carbide-free nanostructured bainitic steel intended

14 Feb 2020: Download PDF file of paper..

14 Feb 2020: Toughness anisotropy in X70 and X80 linepipe steels. M. S. Joo, D.-W. Suh, J.-H. Bae and H. K. D. H. Bhadeshia. Abstract. The anisotropy of mechanical properties in the context of steels used to fabricate large diameter pipes can be detrimental to

14 Feb 2020: Detection of macrosegregation in a large metallic specimen using XRF. E. J. Pickering and M. Holland. Abstract. The characterisation of macroscopic chemical segregation in engineering components over length scales of many metres can be an arduous

14 Feb 2020: Phase-field model study of the crystal morphological evolution of hcp metals. R. S. Qin and H. K. D. H. Bhadeshia. Abstract. An expression for anisotropic interfacial energy of hexagonal close-packed metals has been formulated which is able to

14 Feb 2020: Hydrogen and aluminium in high-manganese twinning-induced plasticity steel. D. K. Han, Y. M. Kim, H. N. Han, H. K. D. H. Bhadeshia and D. W. Suh. Abstract. Given that the penetration of hydrogen into austenite is confined to surface layers following

14 Feb 2020: Download archives of related unpublished data.

14 Feb 2020: Duplex Hardening of Steels for Aeroengine Bearings. S. Ooi and H. K. D. H. Bhadeshia. Abstract. Duplex hardening is a process in which conventional heat-treatments such as secondary or case hardening are followed up by surface nitriding to achieve

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: Neural Network Models for the Tensile Properties of Mechanically Alloyed Iron-alloys, Part 1. A. Y. Badmos, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. A neural network technique trained within a Bayesian framework has been applied to the

14 Feb 2020: Atomic mechanism of the bainite transformation. H. K. D. H. Bhadeshia. Abstract. I have on previous occasions shown how we can be surprised and delighted by new discoveries in steels, which at the same time may be useful. However, my focus in this

14 Feb 2020: Synchrotron and neural network analysis of the influence of composition and heat treatment on the rolling contact fatigue of hypereutectoid pearlitic steels. W. Solano-Alvarez, M. Peet, E. J. Pickering and J. Jaiswal and A. Bevan and H. K. D. H.

14 Feb 2020: Medium-Alloy Manganese-Rich Transformation-Induced Plasticity Steels. D. W. Suh, J. H. Ryu, M. S. Joo, H. S. Yang, K. Y. Lee and H. K. D. H. Bhadeshia. Abstract. The manganese concentration of steels which rely on transformation--induced plasticity

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 the Deformation of a Non-Uniform Grain Structure. Jae-Yong Chae, Rongshan Qin and H. K. D. H. Bhadeshia. Abstract. The study of changes in the amount of grain boundary surface (or edge) as a function of plastic strain is important in the

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: 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: 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: 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

14 Feb 2020: Download PDF file of paper on kinetics of bainite..

14 Feb 2020: Mixed Diffusion-Controlled Growth of Pearlite in Binary Steel. A. S. Pandit and H. K. D. H. Bhadeshia. Abstract. A kinetic theory for the diffusion-controlled growth of pearlite is presented, which accounts simultaneously for diffusion through the

14 Feb 2020: Austenite Grain Size and the Martensite-Start Temperature. Hong-Seok Yang and H. K. D. H. Bhadeshia. Abstract. New experimental evidence is obtained to confirm the dependence of the martensite-start temperature on the austenite grain size. The

14 Feb 2020: Stabilisation of ferrite in hot-rolled δ-TRIP steel. H. L. Yi, K. Y. Lee and H. K. D. H. Bhadeshia. Abstract. A steel has recently been designed to benefit from the deformation induced transformation of retained austenite present in association

14 Feb 2020: Soft novel form of white-etching matter and ductile failure of carbide-free bainitic steels under rolling contact stresses. W. Solano-Alvarez, E. J. Pickering, M. J. Peet, K. L. Moore, J. Jaiswal, A. Bevan and H. K. D. H. Bhadeshia. Abstract. There

14 Feb 2020: Recovery, recrystallisation and grain growth. Directional Recrystallisation. Slide Presentations.

14 Feb 2020: Surface residual stresses in multipass welds produced using low transformation temperature filler alloys. T. I. Ramjaun, H. J. Stone, L. Karlsson, M. Gharghouri, K. Dalaei, R. Moat, H. K. D. H. Bhadeshia. Abstract. Tensile residual stresses at the

14 Feb 2020: Pearlite growth rate in Fe-C and Fe-Mn-C steels. S. W. Seo, G. S. Jung, J. S. Lee, C. M. Bae, H. K. D. H. Bhadeshia and D. W. Suh. Abstract. The kinetic theory for the growth of pearlite in binary and ternary steels is implemented to ensure local

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