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On the Ti-Mo-Fe-C atomic clustering during interphase precipitation in the Ti-Mo steel studied by advanced microscopic techniques

Timokhina, Ilana, Miller, Michael K., Wang, Jiangting, Beladi, Hossein, Cizek, Pavel and Hodgson, Peter D. 2016, On the Ti-Mo-Fe-C atomic clustering during interphase precipitation in the Ti-Mo steel studied by advanced microscopic techniques, Materials and design, vol. 111, pp. 222-229, doi: 10.1016/j.matdes.2016.08.086.

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Title On the Ti-Mo-Fe-C atomic clustering during interphase precipitation in the Ti-Mo steel studied by advanced microscopic techniques
Author(s) Timokhina, Ilana
Miller, Michael K.
Wang, Jiangting
Beladi, Hossein
Cizek, Pavel
Hodgson, Peter D.
Journal name Materials and design
Volume number 111
Start page 222
End page 229
Total pages 8
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-12-05
ISSN 0264-1275
1873-4197
Keyword(s) Science & Technology
Technology
Materials Science, Multidisciplinary
Materials Science
Clusters
Ti-Mo interphase precipitation
Site-specific transmission electron microscopy
Atom probe tomography
Summary Site-specific transmission electron microscopy (TEM) and atom probe tomography (APT) have been used to study the Ti-Mo-Fe-C atomic clustering during interphase precipitation at the early stages of austenite to ferrite transformation in a Fe–0.03C–1.5Mn–0.2Si–0.29Cr–0.22Mo–0.05Ti–0.025Al (in wt.%) steel. We observed: (i) the formation of only clusters at the beginning of austenite-to-ferrite transformation and co-existence of numerous clusters along with interphase nano-scale precipitates during development of the transformation, (ii) the nano-precipitates were formed via transient metastable precipitates, and (iii) a cluster-hardening mechanism was proposed based on hardness test and APT and TEM characterization. It was suggested that the rapid hardening reactions, due to the formation of solute clusters, can accompany the early stages of solid solution decomposition, which precede the formation of interphase precipitates.
Language eng
DOI 10.1016/j.matdes.2016.08.086
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
0913 Mechanical Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Elsevier Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30086970

Document type: Journal Article
Collection: Institute for Frontier Materials
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