Atomic Scale Investigation of Solutes and Precipitates in High Strength Steels

Peter Hodgson; Subrata Mukherjee; Hossein Beladi; Xiang Yuan Xiong; Ilana B. Timokhina

doi:10.4028/www.scientific.net/MSF.762.14

Paper Titles

Preface, Committees and Sponsors

Dynamic Transformation during Simulated Hot Rolling
p.1

Multiple, Simultaneous, Martensitic Transformations: Implications on Transformation Texture Intensities
p.9

Atomic Scale Investigation of Solutes and Precipitates in High Strength Steels
p.14

Numerical Simulation of Hot Rolling
p.22

Formation of an Ultrafine-Grained Austenite-Containing Microstructure from a Cold-Rolled Medium-Manganese Steel Processed Using Intercritical Annealing
p.31

The Thermomechanical Controlled Processing of High-Strength Steel Plate: A New View of Toughness Based on Modern Metallography
p.38

Comparison of Material Properties and Creep Behavior of 20MnCr5 and S275JR Steels
p.47

Control of Microstructure by MaxStrain Device
p.55

HomeMaterials Science ForumMaterials Science Forum Vol. 762Atomic Scale Investigation of Solutes and...

Atomic Scale Investigation of Solutes and Precipitates in High Strength Steels

Abstract:

Two steels, ferritic, high strength with interphase precipitation and nanobainitic, were used to show the advances in and application of atom probe. The coexistence of the nanoscale, interphase Nb-Mo-C clusters and stoichiometric MC nanoparticles was found in the high strength steel after thermomechanical processing. Moreover, the segregation of carbon at different heterogeneous sites such as grain boundary that reduces the solute element available for fine precipitation was observed. The APT study of the solutes redistribution between the retained austenite and bainitic ferrite in the nanobainitic steel revealed: (i) the presence of two types of the retained austenite with higher and lower carbon content and (ii) segregation of carbon at the local defects such as dislocations in the bainitic ferrite during the isothermal hold.

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Periodical:

Materials Science Forum (Volume 762)

Pages:

14-21

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.762.14

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Online since:

July 2013

Authors:

Peter Hodgson, Subrata Mukherjee, Hossein Beladi, Xiang Yuan Xiong, Ilana B. Timokhina

Keywords:

Atom Probe Tomography, Clusters, Interphase Precipitation, Nanoprecipitates, Nanoscale Bainite, THERMOMECHANICAL PROCESSING

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References

[1] M.K. Miller: Atom Probe Tomography, in Handbook of Microscopy for Nanotechnology, eds. Nan Yao and Wang ZL, Kluwer Academic Press, New York, 2005, p.742.