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Resolving the Morphology of Niobium Carbonitride Nano-Precipitates in Steel Using Atom Probe Tomography

  • Andrew J. Breen (a1) (a2), Kelvin Y. Xie (a3), Michael P. Moody (a4), Baptiste Gault (a4), Hung-Wei Yen (a1) (a2), Christopher C. Wong (a5), Julie M. Cairney (a1) (a2) and Simon P. Ringer (a1) (a2)...


Atom probe is a powerful technique for studying the composition of nano-precipitates, but their morphology within the reconstructed data is distorted due to the so-called local magnification effect. A new technique has been developed to mitigate this limitation by characterizing the distribution of the surrounding matrix atoms, rather than those contained within the nano-precipitates themselves. A comprehensive chemical analysis enables further information on size and chemistry to be obtained. The method enables new insight into the morphology and chemistry of niobium carbonitride nano-precipitates within ferrite for a series of Nb-microalloyed ultra-thin cast strip steels. The results are supported by complementary high-resolution transmission electron microscopy.


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Araullo-Peters, V., Gault, B., Geuser, F.d., Deschamps, A. & Cairney, J.M. (2014). Microstructural evolution during ageing of Al–Cu–Li–x alloys. Acta Materialia 66, 199208.
Araullo-Peters, V.J., Gault, B., Shrestha, S.L., Yao, L., Moody, M.P., Ringer, S.P. & Cairney, J.M. (2012). Atom probe crystallography: Atomic-scale 3-D orientation mapping. Scripta Materialia 66(11), 907910.
Billinge, S.J.L. & Levin, I. (2007). The problem with determining atomic structure at the nanoscale. Science 316(5824), 561565.
Ceguerra, A.V., Moody, M.P., Stephenson, L.T., Marceau, R.K.W. & Ringer, S.P. (2010). A three-dimensional Markov field approach for the analysis of atomic clustering in atom probe data. Philosophical Magazine 90(12), 16571683.
Courtois, E., Epicier, T. & Scott, C. (2006). EELS study of niobium carbo-nitride nano-precipitates in ferrite. Micron 37(5), 492502.
Danoix, F., Epicier, T., Vurpillot, F. & Blavette, D. (2012). Atomic-scale imaging and analysis of single layer GP zones in a model steel. Journal of Materials Science 47(3), 15671571.
De Geuser, F., Lefebvre, W., Danoix, F., Vurpillot, F., Forbord, B. & Blavette, D. (2007). An improved reconstruction procedure for the correction of local magnification effects in three-dimensional atom-probe. Surface and Interface Analysis 39(2–3), 268272.
DeArdo, A.J. (2001). Fundamental Metallurgy of Niobium in Steel. Niobium Science and Technology: Proceedings of the Niobium 2001 International Symposium, TMS, 427500.
Deschamps, A., Danoix, F., De Geuser, F., Epicier, T., Leitner, H. & Perez, M. (2011). Low temperature precipitation kinetics of niobium nitride platelets in Fe. Materials Letters 65(14), 22652268.
Fujita, N., Bhadeshia, H.K.D.H. & Kikuchi, M. (2004). Precipitation sequence in niobium-alloyed ferritic stainless steel. Modelling and Simulation in Materials Science and Engineering 12(2), 273.
Gault, B., Danoix, F., Hoummada, K., Mangelinck, D. & Leitner, H. (2012a). Impact of directional walk on atom probe microanalysis. Ultramicroscopy 113, 182191.
Gault, B., Moody, M.P., Cairney, J.M. & Ringer, S.P. (2012b). Atom probe crystallography. Materials Today 15(9), 378386.
Gault, B., Moody, M.P., Cairney, J.M. & Ringer, S.P. (2012c). Atom Probe Microscopy. New York: Springer.
Gault, B., Moody, M.P., de Geuser, F., Tsafnat, G., La Fontaine, A., Stephenson, L.T., Haley, D. & Ringer, S.P. (2009). Advances in the calibration of atom probe tomographic reconstruction. Journal of Applied Physics 105(3), 448457.
Guinier, A. (1938). Structure of age-hardened aluminium-copper alloys. Nature 142, 569570.
Hansen, S.S., Vandersande, J.B. & Cohen, M. (1980). Niobium carbonitride precipitation and austenite recrystallization in hot-rolled microalloyed steels. Metallurgical Transactions A – Physical Metallurgy and Materials Science 11(3), 387402.
Hellman, O.C., du Rivage, J.B. & Seidman, D.N. (2003). Efficient sampling for three-dimensional atom probe microscopy data. Ultramicroscopy 95(1–4), 199205.
Hin, C., Brechet, Y., Maugis, P. & Soisson, F. (2008). Kinetics of heterogeneous dislocation precipitation of NbC in alpha-iron. Acta Materialia 56(19), 55355543.
Hono, K., Hashizume, T., Hasegawa, Y., Hirano, K. & Sakurai, T. (1986). A study of multilayer Gp zones in an Al-1.7at-percent cu alloy by atom-probe fim. Scripta Metallurgica 20(4), 487492.
Hua, M., Garcia, C.I. & DeArdo, A.J. (1997). Precipitation behavior in ultra-low-carbon steels containing titanium and niobium. Metallurgical and Materials Transactions A – Physical Metallurgy and Materials Science 28(9), 17691780.
Hutchinson, C.R., Zurob, H.S., Sinclair, C.W. & Brechet, Y.J.M. (2008). The comparative effectiveness of Nb solute and NbC precipitates at impeding grain-boundary motion in Nb steels. Scripta Materialia 59(6), 635637.
Kelly, T.F., Miller, M.K., Rajan, K. & Ringer, S.P. (2013). Atomic-scale tomography: A 2020 Vision. Microscopy and Microanalysis 19(3), 652664.
Maruyama, N., Uemori, R. & Sugiyama, M. (1998). The role of niobium in the retardation of the early stage of austenite recovery in hot-deformed steels. Materials Science and Engineering A – Structural Materials Properties Microstructure and Processing 250(1), 27.
Miller, M.K. & Hetherington, M.G. (1991). Local magnification effects in the atom probe. Surface Science 246(1–3), 442449.
Miller, M.K., Kelly, T.F., Rajan, K. & Ringer, S.P. (2012). The future of atom probe tomography. Materials Today 15(4), 158165.
Miller, M.K. & Kenik, E.A. (2004). Atom probe tomography: A technique for nanoscale characterization. Microscopy and Microanalysis 10(3), 336341.
Moody, M.P., Gault, B., Stephenson, L.T., Haley, D. & Ringer, S.P. (2009). Qualification of the tomographic reconstruction in atom probe by advanced spatial distribution map techniques. Ultramicroscopy 109(7), 815824.
Moody, M.P., Gault, B., Stephenson, L.T., Marceau, R.K.W., Powles, R.C., Ceguerra, A.V., Breen, A.J. & Ringer, S.P. (2011). Lattice rectification in atom probe tomography: Toward true three-dimensional atomic microscopy. Microscopy and Microanalysis 17(2), 226239.
Mottura, A., Warnken, N., Miller, M.K., Finnis, M.W. & Reed, R.C. (2010). Atom probe tomography analysis of the distribution of rhenium in nickel alloys. Acta Materialia 58(3), 931942.
Perez, M., Courtois, E., Acevedo, D., Epicier, T. & Maugis, P. (2007). Precipitation of niobium carbonitrides in ferrite: Chemical composition measurements and thermodynamic modelling. Philosophical Magazine Letters 87(9), 645656.
Preston, G.D. (1938). The diffraction of X-rays by an age-hardening alloy of aluminium and copper. The structure of an intermediate phase. Philosophical Magazine 26(178), 855871.
Sha, W., Chang, L., Smith, G.D.W., Liu, C. & Mittemeijer, E.J. (1992). Some aspects of atom-probe analysis of Fe-C and Fe-N Systems. Surface Science 266(1–3), 416423.
Shanmugam, S., Misra, R.D.K., Hartmann, J. & Jansto, S.G. (2006). Microstructure of high strength niobium-containing pipeline steel. Materials Science and Engineering A – Structural Materials Properties Microstructure and Processing 441(1–2), 215229.
Shrestha, S.L., Xie, K.Y., Zhu, C., Ringer, S.P., Killmore, C., Carpenter, K., Kaul, H., Williams, J.G. & Cairney, J.M. (2013). Cluster strengthening of Nb-microalloyed ultra-thin cast strip steels produced by the CASTRIP® process. Materials Science and Engineering: A 568, 8895.
Sosinsky, D.J., Campbell, P., Mahapatra, R., Blejde, W. & Fisher, F. (2008). The CASTRIP(A (R)) process – recent developments at Nucor steel’s commercial strip casting plant. Metallurgist 52(11–12), 691699.
Stephenson, L.T., Moody, M.P., Gault, B. & Ringer, S.P. (2011). Estimating the physical cluster-size distribution within materials using atom-probe. Microscopy Research and Technique 74(9), 799803.
Stephenson, L.T., Moody, M.P., Liddicoat, P.V. & Ringer, S.P. (2007). New techniques for the analysis of fine-scaled clustering phenomena within atom probe tomography (APT) data. Microscopy and Microanalysis 13(6), 448463.
Vurpillot, F., Bostel, A. & Blavette, D. (2000). Trajectory overlaps and local magnification in three-dimensional atom probe. Applied Physics Letters 76(21), 31273129.
Xie, K.Y., Yao, L., Zhu, C., Cairney, J.M., Killmore, C.R., Barbaro, F.J., Williams, J.G. & Ringer, S.P. (2011). Effect of Nb microalloying and hot rolling on microstructure and properties of ultrathin cast strip steels produced by the CASTRIP(A (R)) process. Metallurgical and Materials Transactions A – Physical Metallurgy and Materials Science 42A(8), 21992206.
Xie, K.Y., Zheng, T.X., Cairney, J.M., Kaul, H., Williams, J.G., Barbaro, F.J., Killmore, C.R. & Ringer, S.P. (2012). Strengthening from Nb-rich clusters in a Nb-microalloyed steel. Scripta Materialia 66(9), 710713.
Yao, L., Cairney, J.M., Zhu, C. & Ringer, S.P. (2011). Optimisation of specimen temperature and pulse fraction in atom probe microscopy experiments on a microalloyed steel. Ultramicroscopy 111(6), 648651.
Yao, L., Gault, B., Cairney, J.M. & Ringer, S.P. (2010). On the multiplicity of field evaporation events in atom probe: A new dimension to the analysis of mass spectra. Philosophical Magazine Letters 90(2), 121129.


Resolving the Morphology of Niobium Carbonitride Nano-Precipitates in Steel Using Atom Probe Tomography

  • Andrew J. Breen (a1) (a2), Kelvin Y. Xie (a3), Michael P. Moody (a4), Baptiste Gault (a4), Hung-Wei Yen (a1) (a2), Christopher C. Wong (a5), Julie M. Cairney (a1) (a2) and Simon P. Ringer (a1) (a2)...


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