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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Materials by Design: An MPMD Symposium Honoring Greg Olson on the Occasion of His 70th Birthday
Presentation Title The Redistribution of Carbon Atoms during Tempering of Martensite
Author(s) George Smith
On-Site Speaker (Planned) George Smith
Abstract Scope This presentation will provide an overview of work carried out at Oxford using atom probe microanalysis, to establish the distribution of carbon atoms in as-quenched and room-temperature aged martensitic steels, and in steels tempered at elevated temperatures. Much of this work was carried out in collaboration with Professor Greg Olson. A wide range of phenomena have been observed, including segregation of carbon atoms to grain boundaries, twin boundaries and lath boundaries, and to thin films of retained austenite; formation of Cottrell atmospheres at dislocations; coherent clustering of carbon atoms in the martensite matrix, apparently by a spinodal process; and the formation of a succession of carbide phases of increasing stability. The inter-relationships between the atomic-scale processes occurring during the various stages of tempering will be described in detail. The role of alloying elements in the tempering process will also be discussed.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A History of Materials by Design, and a Very Bright Future
Computational Thermodynamics and Materials Design
Creating Materials Databases Using X-Ray Tomography
Exploring the Dark Continent of Structure-Property Relationships
Formalizing the Process-Structure-Property-Performance Approach to Materials Design and Development
GBO, SRG, ICME and MGI - Towards the General Materials Design System
The Redistribution of Carbon Atoms during Tempering of Martensite
The Use of 3D Microstructural Characterization for the Validation of Models

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