Atomic scale investigation of solutes and precipitates in high strength steels

Peter D Hodgson, Subrata Mukherjee, Hossein Beladi, Xiang-Yuan Xiong, Ilana Timokhina

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

Two steels, ferritic, high strength with interphase precipitation and nano-bainitic, were used to show the advances in and application of atom probe. The coexistence of the nano-scale, interphase Nb-Mo-C clusters and stoichiometric MC nano particles 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 nano-bainitic 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.
Original languageEnglish
Title of host publicationMaterials Science Forum
EditorsL Pentti Karjalainen, David A Porter, Seppo A Jarvenpaa
Place of PublicationZurich Switzerland
PublisherTrans Tech Publications
Pages14 - 21
Number of pages8
Volume762
ISBN (Print)1662-9752
DOIs
Publication statusPublished - 2013
EventInternational Conference on Physical and Numerical Simulation of Materials Processing (ICPNS) 2013 - Oulu Finland, Zurich Switzerland
Duration: 1 Jan 2013 → …

Conference

ConferenceInternational Conference on Physical and Numerical Simulation of Materials Processing (ICPNS) 2013
CityZurich Switzerland
Period1/01/13 → …

Cite this

Hodgson, P. D., Mukherjee, S., Beladi, H., Xiong, X-Y., & Timokhina, I. (2013). Atomic scale investigation of solutes and precipitates in high strength steels. In L. P. Karjalainen, D. A. Porter, & S. A. Jarvenpaa (Eds.), Materials Science Forum (Vol. 762, pp. 14 - 21). Zurich Switzerland: Trans Tech Publications. https://doi.org/10.4028/www.scientific.net/MSF.762.14
Hodgson, Peter D ; Mukherjee, Subrata ; Beladi, Hossein ; Xiong, Xiang-Yuan ; Timokhina, Ilana. / Atomic scale investigation of solutes and precipitates in high strength steels. Materials Science Forum. editor / L Pentti Karjalainen ; David A Porter ; Seppo A Jarvenpaa. Vol. 762 Zurich Switzerland : Trans Tech Publications, 2013. pp. 14 - 21
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Hodgson, PD, Mukherjee, S, Beladi, H, Xiong, X-Y & Timokhina, I 2013, Atomic scale investigation of solutes and precipitates in high strength steels. in LP Karjalainen, DA Porter & SA Jarvenpaa (eds), Materials Science Forum. vol. 762, Trans Tech Publications, Zurich Switzerland, pp. 14 - 21, International Conference on Physical and Numerical Simulation of Materials Processing (ICPNS) 2013, Zurich Switzerland, 1/01/13. https://doi.org/10.4028/www.scientific.net/MSF.762.14

Atomic scale investigation of solutes and precipitates in high strength steels. / Hodgson, Peter D; Mukherjee, Subrata; Beladi, Hossein; Xiong, Xiang-Yuan; Timokhina, Ilana.

Materials Science Forum. ed. / L Pentti Karjalainen; David A Porter; Seppo A Jarvenpaa. Vol. 762 Zurich Switzerland : Trans Tech Publications, 2013. p. 14 - 21.

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

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AB - Two steels, ferritic, high strength with interphase precipitation and nano-bainitic, were used to show the advances in and application of atom probe. The coexistence of the nano-scale, interphase Nb-Mo-C clusters and stoichiometric MC nano particles 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 nano-bainitic 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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Hodgson PD, Mukherjee S, Beladi H, Xiong X-Y, Timokhina I. Atomic scale investigation of solutes and precipitates in high strength steels. In Karjalainen LP, Porter DA, Jarvenpaa SA, editors, Materials Science Forum. Vol. 762. Zurich Switzerland: Trans Tech Publications. 2013. p. 14 - 21 https://doi.org/10.4028/www.scientific.net/MSF.762.14