Interface characteristics and precipitation during the austenite-to-ferrite transformation of a Ti-Mo microalloyed steel Bikmukhametov, I, Beladi, Hossein, Wang, Jiangting, Tari, V, Rollett, AD, Hodgson, PD and Timokhina, I 2022, Interface characteristics and precipitation during the austenite-to-ferrite transformation of a Ti-Mo microalloyed steel, Journal of Alloys and Compounds, vol. 893, doi: 10.1016/j.jallcom.2021.162224. Attached Files Name Description MIMEType Size Downloads Title Interface characteristics and precipitation during the austenite-to-ferrite transformation of a Ti-Mo microalloyed steel Author(s) Bikmukhametov, I Beladi, Hossein orcid.org/0000-0003-0131-707X Wang, Jiangting orcid.org/0000-0002-8171-6291 Tari, V Rollett, AD Hodgson, PD Timokhina, I Journal name Journal of Alloys and Compounds Volume number 893 Publisher P Publication date 2022-02-10 ISSN 0925-8388 Summary The complexity of interphase precipitation in a Fe-0.19C-1.54Mn-0.4Si-0.06Al-0.13Mo-0.06Ti (at%) high strength low-alloy (HSLA) steel at an early stage of the austenite-to-ferrite transformation was studied by analyzing the solute distribution across ferrite-austenite interfaces with Kurdjumov-Sachs (K-S) and non-K-S orientation relationships (OR). Structural characterization i.e. ferrite/austenite OR and habit plane characteristics was performed by electron backscatter diffraction (EBSD) and the clustering back-calculation approach, while solute distributions i.e. the solute concentration spikes in the interface regions were studied by atom probe tomography (APT) on the specimens specifically prepared across/near the ferrite/austenite interfaces. It was shown for the first time that interphase precipitation is promoted at both types of interface: (i) a K-S OR and habit plane deviated from ideal (110)α//(111)γ and (ii) a non K-S OR. The key aspect of interphase precipitation is the distribution of solute atoms across the interface, which is pronounced Mn, Ti, Mo and C concentration spikes at the interphase boundary. In contrast, interphase precipitates were not formed at the coherent interface with a K-S OR and habit plane of (110)α//(111)γ. This was correlated with the interfacial condition, where the compositional ratio of substitutional solute and solvent elements remains almost constant across the interface, i.e. Mn and C spikes. Interface compositions in this study did not match with local equilibria (negligible partitioning local equilibrium and paraequilibrium) limits. In addition, it appeared that the interfaces with Mn, Ti, Mo and C concentration spikes form ledges leading to randomly redistributed interphase precipitates. DOI 10.1016/j.jallcom.2021.162224 Indigenous content off Field of Research 0204 Condensed Matter Physics 0912 Materials Engineering 0914 Resources Engineering and Extractive Metallurgy Persistent URL http://hdl.handle.net/10536/DRO/DU:30157660 Document type: Journal Article Collections: Institute for Frontier Materials GTP Research Related Links Link Description Connect to published version Go to link with your DU access privileges   Connect to Elements publication management system Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 22 Oct 2021, 07:33:15 EST Fri, 22 Oct 2021, 14:54:32 EST Fri, 22 Oct 2021, 15:00:15 EST Sat, 20 Nov 2021, 01:30:55 EST Fri, 13 May 2022, 06:02:12 EST Fri, 08 Jul 2022, 09:35:31 EST Fri, 08 Jul 2022, 12:12:20 EST Filtered Full Citation counts:   Cited 1 times in TR Web of Science Cited 1 times in Scopus Search Google Scholar Access Statistics: 12 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Fri, 22 Oct 2021, 07:33:15 EST