Austenite Formation and Decomposition

These proceedings compile papers from an international symposium sponsored by the ISS Product Physical Metallurgy and TMS Phase Transformations committees. These papers bring together academic and industrial experts in austenite formation and decomposition to present the field's latest developments and cover such areas as advances in the understanding of the mechanistic, diffusional, and thermodynamic aspects of austenite formation and decomposition, as well as the ability to measure, characterize, and model these phenomena. Topics include:* Effects of processing on austenite formation or decomposition* Computational modeling* Analytical methods for measurement of austenite formation and decomposition* Characterization of microstructures Metallurgists in the field of ferrous metallurgy in both academia and industry, as well as metallurgists working in the area of phase transformations fundamentals, will find this book to be a valuable reference. From Materials Science & Technology 2003 to be held in Chicago, Illinois, November 9-12, 2003.

Table of Contents:
Preface. Acknowledgements/Organizing Committee. Peer Review Committee. THERMODYNAMICS AND KINETICS. The Bay Phenomenon in Steels with Reasonably Strong Carbide Formers ( M. Hillert and L Hoglund ). The Role of Carbon on the Kinetics of Bainite Transformation in Steels ( D. Quidort, O. Bouaziz and Y. Brechet ). The Influence of Alloy Element Partitioning on the Shapes of TTT Start Curves in Steels ( R.E. Hackenberg and G.J. Shiflet ). Effects of High Magnetic Field on Phase Transformation Behavior and Structure in Fe-Based Alloys ( H. Ohtsuka, X. Hao and H. Wada ). The Diffusional Formation of Allotriomorphic Ferrite from Austenite in Fe-C-X Systems. The Simplest Case: Fe-C-Ni ( C.R. Hutchinson, A. Fuchsmann, H. Zurob and Y. Brechet ). Interfacial Conditions at the Moving Interface During Growth of Ferrite from Austenite in Fe-C-(X) Alloys ( G. Inden and C.R. Hutchinson ). Competition Between Allotriomorphic and Idiomorphic Ferrite Transformations Kinetics ( C. Capdevila, F.G. Caballero and C. Garcia de Andres ). Influencing of Alloying Element Accumulation at a/g Boundaries on theGrowth of Proeutectoid Ferrite in Fe-C-Mn Alloys ( M. Enomoto ). Computer Prediction of Para-Equilibrium Transformations ( B. Sundman ). Investigation of the Interaction Between Recovery and Precipitation in a Model Austenitic Alloy: Experimental and Modelling Results ( H.S. Zurob, C.R. Hutchinson, G.R. Purdy and Y. Brechet ). A Study of the Transition Kinetics from Para-Equilibrium to Ortho-Equilibrium ( J.M. Vitek, S.S. Babu and E. Kozeschnik ). Non-Equilibrium Reaction Paths in Ferrous Austenite Decomposition ( R.E. Hackenberg and G.J. Shiflet ). Deviation from Local-Equilibrium During Austenite to Ferrite Transformation ( J. Agren ). Characterization of Low Temperature Ferrite/Austenite Transformations in the Heat Affected Zone of 2205 Duplex Stainless Steel Arc Welds ( T.A. Palmer, J.W. Elmer, S.S. Babu and J.M. Vitek ). MODELING AND CHARACTERIZATION. Challenges in Modeling the Overall Austenite Decomposition Kinetics ( M. Militzer ). Influence of Thermomechanical Treatment on the Austenite-PearliteTransformation in a High Carbon Nb-Microalloyed Steel ( E. Cotrina, B. Lopez and J.M. Rodriguez-Ibabe ). Modelling the Effects of Microalloying on the Hardenability of High Strength Steels ( T. Siwecki and B. Rodell ). In-Situ Characterization of Austenite to Martensite Decomposition in 9Cr-1Mo-V Steel Welds ( M.L. Santella, S.S. Babu, R.W. Swindeman and E.D. Specht ). Prediction of Phase Transformation Kinetics and Microstructures in Low-Carbon High Strength Steels ( T. Iung, M. Kandel, S. Lacroix, A. Perlade and D. Quidort ). Austenite Decomposition: Modelling and Measuring at the Level of Individual Grains ( S. van der Zwaag, J. Sietsma, E. Offerman and N. van Dijk ). Simulation of Proeutectoid Ferrite Precipitation During Technical Heat Treatment ( G. Pariser, P. Shaffnit, I. Steinbach and W. Bleck ). Microstructure Characterization of the Austenite Decomposition of HSLA Steel Strip ( J. Wu, P.J. Wray, M. Hua, C.I. Garcia and A.J. DeArdo ). On the Role of Kinematics in Constructing Predictive Models of Austenite Decomposition ( M.T. Lusk, W. Wang, X. Sun and Y.-K. Lee ). Two Problems in Ledgewise Growth of Ferrite Requiring Further Advanced Experimental Techniques for Their Solution ( W.T. Reynolds, Jr., H.I. Aaronson and H. Goldstein ). Characterization and Prediction of Austenite Formation and Decomposition in Steel Welds ( S.S. Babu, J.M. Vitek, S.A. David, T. Palmer and J.W. Elmer ). Analysis of the g --> a Transformation in a C-Mn Steel by Dilatometry, Laser Scanning Confocal Microscopy and Phase Field Modelling ( M.G. Mecozzi, J. Sietsma, S. van der Zwaag, M. Apel, P. Shaffnit and I. Steinbach ). Influence of Deformation on Austenite to Ferrite Transformation in Low Carbon Steels: Experimental Approach and Modelling ( S. Lacroix, Y. Brechet, M Veron, D. Quidort, M. Kandel and T. Iung ). Peritectic Reaction in the Iron-Carbon, Iron-Nickel, and Iron-Chromium-Nickel Systems ( N.J. McDonald and S. Sridhar ). AUSTENITE AND CEMENTITE. The Divorced Eutctoid Transformation and Spheroidization of Steels ( G.M. Michal and M.D. Novak ). The Proeutectoid Cementite Transformation ( G. Spanos and M.V. Kral ). The Interfacial Structure of Widmanstatten Cementite Laths ( R.W. Fonda, M.V. Kral and W.T. Reynolds, Jr. ). Precipitate Coarsening and Grain Growth in Steels ( K.C. Russell ). Contribution to the Study of Austenite Formation in Steels ( F.G. Caballero, C. Capdevila, D. San Martin and C. Garcia De Andres ). Modeling the Formation of Austenite from Ferrite-Carbide Aggregates ( M. Hunkel, H. Surm, Th. Lubben, O. Kessler, F. Hoffman and P. Mayr ). FUNDAMENTALS OF MULTIPHASE STEELS. Transformation Toughening in Dispersed-Phase Systems ( G.B. Olson and C.J. Kuehmann ). Quenching and Partitioning: A Fundamentally New Process to Create High Strength Trip Sheet Microstructures ( J.G. Speer, A.M. Streicher, D.K. Matlock, F. Rizzo and G. Krauss ). On the Austenite Retention in Low Alloy Steels ( S. Godet, C. Georges and P.J. Jacques ). Quasi-Adiabatic Effects During the High Strain Rate Deformation of Dispersed-Phase Systems with Strain-Induced Martensitic Transformation ( B.C. De Cooman, L. Samek, J. Mahieu, J. Van Slycken, P. Verleysen, J. Degrieck, L. Lin, L. Wang, X.C. Wei and S. Peng ). Phase Transformation Behavior During Continuous Cooling and Isothermal Holding of Aluminum and Silicon Bearing Trip Steels ( N. Fonstein, N. Pottore, S.H. Lalam and D. Bhattacharya ). Effect of Annealing Temperature on Austenite Decomposition in a Si-Alloyed Trip Steel ( M.F. Gallagher, J.G. Speer and D.K. Matlock ). The Influence of Nb on the Phase Transformations and Mechanical Properties in Al- and Si- Alloyed Trip-Steels ( S. Traint, A. Pichler, K. Spiradek-Hahn, K. Hulka and E. Werner ). Author Index. Subject Index.