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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

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14 Feb 2020: Coalesced bainite by isothermal transformation of reheated weld metal. J. H. Pak, H. K. D. H. Bhadeshia, L. Karlsson and E. Keehan. Abstract. The martensite start and bainite start temperatures have been determined in reheated, high strength weld

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14 Feb 2020: Prediction of the Vickers Hardness in Austempered Ductile Irons using Neural Networks. M. A. Yescas. Abstract. To the design engineer, hardness often means an easily measured quantity which indicates something about the strength and heat treatment

14 Feb 2020: ε-carbide in Alloy Steels: First-principles Assessment. J. H. Jang, I. G. Kim and H. K. D. H. Bhadeshia. Abstract. There is now a large volume of sophisticated steels which rely on silicon as an alloying addition with the purpose of avoiding the

14 Feb 2020: Formation of Nanostructured Steels by Phase Transformation. T. Yokota, C. Garcia-Mateo and H. K. D. H. Bhadeshia. Abstract. A thermodynamic criterion is developed to define the finest grain size that can be achieved during phase transformation, as a

14 Feb 2020: Joining Ceramics to Metals using Metallic Foam. A. A. Shirzadi, Y. Zhu and H. K. D. H. Bhadeshia. Abstract. A general method for brazing ceramics to metals using a compliant metallic foam as a buffer layer has been developed. Using stainless steel

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

14 Feb 2020: Comments on “The mechanisms of the fcc-bcc martensitic transformation revealed by pole figures”. H. K. D. H. Bhadeshia. Abstract. It has been suggested in recent work that the observed spread in crystallographic orientations of martensite can be

14 Feb 2020: Bessemer Memorial Lecture: The Dimensions of Steel. H. K. D. H. Bhadeshia. Abstract. There are some important aspects of steel which are hidden from ordinary view and largely from the users of steels. They nevertheless determine the macroscopic

14 Feb 2020: Deformation and Recrystallisation of a Yttria Dispersion-Strengthened, Mechanically Alloyed Iron (MA957). C. Capdevila and H. K. D. H. Bhadeshia. Abstract. Mechanically alloyed and compacted dispersion-strengthened iron base materials show a strange

14 Feb 2020: Neural Networks in Materials Science: The Importance of Uncertainty. H. K. D. H. Bhadeshia. Abstract. It is immensely satisfying to be able to discover fundamental relationships and structure within vast arrays of ill--understood data. The neural

14 Feb 2020: First-principles investigation on magnetism and electronic structures of substitutional impurities in bcc Fe (I): the 3d transition-metal impurities. G. Rahman, I. G. Kim, H. K. D. H. Bhadeshia and A. J. Freeman. The magnetic and electronic

14 Feb 2020: Three-dimensional analysis of coalesced bainite using focused ion beam tomography. E. Keehan, L. Karlsson, H. K. D. H. Bhadeshia and M. Thuvander. Abstract. The relationship between solute content, microstructure and properties has been clarified

14 Feb 2020: Understanding the complexities of bake hardening. S. Das, S. B. Singh, O. N. Mohanty and H. K. D. H. Bhadeshia. Abstract. The basic science behind bake hardening steels is well understood in terms of the interactions between interstitial solutes and

14 Feb 2020: Neural network model of creep strength of austenitic stainless steels. T. Sourmail, H. K. D. H. Bhadeshia and D. J. C. MacKay. Abstract. The creep rupture life and rupture strength of austenitic stainless steels have been expressed as functions of

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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: 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. U.S. Naval Research Laboratory, Washington; Inland Steel U.S.A.; and Cambridge University (U

14 Feb 2020: Download PDF File This file is reprinted from Materials Science and Engineering with permission from Elsevier Science.

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: 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: 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: 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: HYPERBOLIC TANGENTS AND ALLOYS OF IRON. H. K. D. H. Bhadeshia. First published in Materials World, November 1996, 643-645.

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14 Feb 2020: Directional Recrystallisation in a Nickel Base ODS Superalloy. M. Baloch and H. K. D. H. Bhadeshia. Abstract. The directional recrystallisation process which leads to the growth of highly anisotropic 'new' grains in an oxide dispersion strengthened

14 Feb 2020: Modelling anisothermal recrystallisation in austenitic stainless steels. G. J. Hopkin and H. K. D. H. Bhadeshia. Abstract. The kinetics of recrystallisation have in the past been represented using the classical Avrami theory. Some authors have used

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14 Feb 2020: Transformation texture of allotriomorphic ferrite in steel. D. W. Kim, R. S. Qin and H. K. D. H. Bhadeshia. Abstract. Many aspects of the crystallographic texture which develops when austenite transforms into martensite or bainite are well

14 Feb 2020: Materials Science and Engineering A, Vol. A245, 1998, pp. 72-79. This file is reprinted from Materials Science and Engineering with permission from Elsevier Science.

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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

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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: Directional Recrystallisation and its Exploitation in 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.

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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

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14 Feb 2020: Download PDF file of paper. ... This file is reprinted from Materials Science and Engineering with permission from Elsevier Science.

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: 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

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14 Feb 2020: Comments on 'Bainite formation kinetics in high carbon alloyed steel'. H. K. D. H. Bhadeshia. Abstract. We examine here the physical aspects and input parameters of a recently published model on the overall transformation kinetics of the bainite