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Nanoscale clusters in secondary hardening ultra-high strength steels with 1 and 3 wt% Mo: An atom probe investigation

Published online by Cambridge University Press:  18 June 2020

R. Veerababu ,
R. Balamuralikrishnan  and
S. Karthikeyan
R. Veerababu*
Affiliation:
Special Steels Group, Directorate of Special Melting and Processing Technologies, Defence Metallurgical Research Laboratory (DMRL), Kanchanbagh, Hyderabad500 058, India Department of Materials Engineering, Indian Institute of Science, Bangalore560 012, India
R. Balamuralikrishnan
Affiliation:
Special Steels Group, Directorate of Special Melting and Processing Technologies, Defence Metallurgical Research Laboratory (DMRL), Kanchanbagh, Hyderabad500 058, India
S. Karthikeyan
Affiliation:
Department of Materials Engineering, Indian Institute of Science, Bangalore560 012, India
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In the present study, 3D atom probe was used to study the effect of increased Mo (1–3 wt%) on clustering in secondary hardening ultra-high strength steels. Clusters have been classified into three categories, namely, Type I, Type II, and Type III with the (Cr + Mo)/C ratio of <1.5, 1.5–3.25, and >3.25, respectively. Cluster evolution suggests that size and volume fraction (Vf) of Type II clusters increase continuously from as-quenched to aged samples, while the number density (Nv) increases in 400 °C aged sample and decreases in 450 and 500 °C samples. On the other hand, Nv and Vf of both Type I and Type III clusters decrease on aging. This work clearly suggests that on aging, Type II clusters, which are close to M2C stoichiometry, become most stable, which may eventually either become M2C precipitates upon prolonged aging or act as potential nuclei for the precipitation of equilibrium M2C precipitates.

Keywords

nanoscale clusterssteeltransmission electron microscope (TEM)
Type
Article
Information
Journal of Materials Research , Volume 35 , Issue 14 , 28 July 2020 , pp. 1763 - 1776
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Copyright © Materials Research Society 2020

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References

Speich, G.R., Dabkowski, D.S., and Porter, L.F.: Strength and toughness of Fe-10Ni alloys containing C, Cr, Mo, and Co. Metall. Trans. 4(1), 303 (1973).CrossRefGoogle Scholar
Ayer, R. and Machmeier, P.M.: Transmission electron microscopy examination of hardening and toughening phenomena in Aermet 100. Metall. Trans. A 24(9), 1943 (1993).CrossRefGoogle Scholar
Ayer, R. and Machmeier, P.M.: Microstructural basis for the effect of chromium on the strength and toughness of AF1410-based high performance steels. Metall. Mater. Trans. A 27(9), 2510 (1996).CrossRefGoogle Scholar
Dahl, J.M. and M, P.: Novotny: Airframe and landing gear alloy. Adv. Mater. Process. 155(3), 23 (1999).Google Scholar
Veerababu, R., Balamuralikrishnan, R., Muraleedharan, K., and Srinivas, M.: Three-dimensional atom probe investigation of microstructural evolution during tempering of an ultra-high-strength high-toughness steel. Metall. Mater. Trans. A 39(7), 1486 (2008).CrossRefGoogle Scholar
Veerababu, R., Balamuralikrishnan, R., Muraleedharan, K., and Srinivas, M.: Investigation of clusters in medium carbon secondary hardening ultra-high-strength steel after hardening and aging treatments. Metall. Mater. Trans. A 46(6), 2455 (2015).CrossRefGoogle Scholar
Pereloma, E.V., Shekhter, A., Miller, M.K., and Ringer, S.P.: Ageing behaviour of an Fe–20Ni–1.8Mn–1.6Ti–0.59Al (wt%) maraging alloy: Clustering, precipitation and hardening. Acta Mater 52(19), 5589 (2004).CrossRefGoogle Scholar
Shekhter, A., Aaronson, H.I., Miller, M.R., Ringer, S.P., and Pereloma, E.V.: Effect of aging and deformation on the microstructure and properties of Fe-Ni-Ti maraging steel. Metall. Mater. Trans. A 35(3), 973 (2004).Google Scholar
Aruga, Y., Kozuka, M., Takaki, Y., and Sato, T.: Formation and reversion of clusters during natural aging and subsequent artificial aging in an Al–Mg–Si alloy. Mater. Sci. Eng. A 631, 86 (2015).CrossRefGoogle Scholar
Timokhina, I.B., Enomoto, M., Miller, M.K., and Pereloma, E.V.: Microstructure-property relationship in the thermomechanically processed C-Mn-Si-Nb-Al-(Mo) transformation-induced plasticity steels before and after prestraining and Bake hardening treatment. Metall. Mater. Trans. A 43(7), 2473 (2012).CrossRefGoogle Scholar
Cheng, C., Di, Z., Linzhong, Z., and Jishan, Z.: Improved age-hardening response and altered precipitation behavior of Al-5.2Mg-0.45Cu-2.0Zn (wt%) alloy with pre-aging treatment. J. Alloys Compd 691, 40 (2017).Google Scholar
Aruga, Y., Kozuka, M., and Sato, T.: Formulation of initial artificial age-hardening response in an Al-Mg-Si alloy based on the cluster classification using a high-detection-efficiency atom probe. J. Alloys Compd 739, 1115 (2018).CrossRefGoogle Scholar
Aruga, Y., Kim, S.N., Kozuka, M., Kobayashi, E., and Sato, T.: Effects of cluster characteristics on two-step aging behavior in Al-Mg-Si alloys with different Mg/Si ratios and natural aging periods. Mater. Sci. Eng. A 718, 371 (2018).CrossRefGoogle Scholar
Mukherjee, S., Timokhina, I., Chen, Z., Ringer, S.P., and Hodgson, P.D.: Clustering and precipitation processes in a ferritic titanium-molybdenum microalloyed steel. J. Alloys Compd. 690, 621 (2017).10.1016/j.jallcom.2016.08.146CrossRefGoogle Scholar
Timokhina, I., Miller, M. K., Wang, J., Beladi, H., Cizek, P., and Hodgson, P.D.: On the Ti-Mo-Fe-C atomic clustering during interphase precipitation in the Ti-Mo steel studied by advanced microscopic techniques. Mater. Des. 111, 222 (2016).CrossRefGoogle Scholar
Wang, Z., Li, H., Shen, Q., Liu, W., and Wang, Z.: Nano-precipitates evolution and their effects on mechanical properties of 17-4 precipitation hardening stainless steel. Acta Mater. 156, 158 (2018).CrossRefGoogle Scholar
Li, Y., Yan, W., Cotton, J.D., Ryan, G.J., Shen, Y., Wang, W., Shan, Y., and Yang, K.: A new 1.9 GPa maraging stainless steel strengthened by multiple precipitating species. Mater. Des. 82, 56 (2015).10.1016/j.matdes.2015.05.042CrossRefGoogle Scholar
Veerababu, R.: Microstructural studies on high Cr-Mo secondary hardening ultra-high strength steels. Ph.D. thesis, Indian Institute of Science, Bangalore, India, 2015Google Scholar
Seidman, D.N.: Three-dimensional atom-probe tomography: Advances and applications. Annu. Rev. Mater. Res. 37, 127 (2007).CrossRefGoogle Scholar
Miller, M.K., Pareige, P., and Burke, M.G.: Understanding pressure vessel steels: An atom probe perspective. Mater. Charact. 44(1–2), 235 (2000).10.1016/S1044-5803(99)00056-XCrossRefGoogle Scholar
Miller, M.K.: Atom Probe Tomography: Analysis at the Atomic Level (Kluwer Academic/Plenum Press, New York, NY, 2000).CrossRefGoogle Scholar
Hyde, J.M., Marquis, E.A., Wilford, K.B., and Williams, T.J.: A sensitivity analysis of the maximum separation method for the characterisation of solute clusters. Ultramicroscopy 111(6), 440 (2011).CrossRefGoogle ScholarPubMed
Starink, M.J., Cao, L.F., and Rometsch, P.A.: A model for the thermodynamics of and strengthening due to co-clusters in Al–Mg–Si-based alloys. Acta Mater. 60(10), 4194 (2012).CrossRefGoogle Scholar
Starink, M.J.: A model for co-clusters and their strengthening in Al–Cu–Mg based alloys: A comparison with experimental data. Int. J. Mater. Res. 103(8), 942 (2012).CrossRefGoogle Scholar
Pereloma, E.V., Miller, M.K., and Timokhina, I.B.: On the decomposition of martensite during bake hardening of thermomechanically processed transformation-Induced plasticity steels. Metall. Mater. Trans. A 39(13), 3210 (2008).CrossRefGoogle Scholar
Sha, G. and Cerezo, A.: Early-stage precipitation in Al–Zn–Mg–Cu alloy (7050). Acta Mater. 52(15), 4503 (2004).CrossRefGoogle Scholar
Deschamps, A., Bigot, A., Livet, F., Auger, P., Brechet, Y., and Blavette, D.: A comparative study of precipitate composition and volume fraction in an Al–Zn–Mg alloy using tomographic atom probe and small-angle X-ray scattering. Philos. Mag. A 81(10), 2391 (2001).CrossRefGoogle Scholar
Marceau, R.K.W., de Vaucorbeil, A., Sha, G., Ringer, S.P., and Poole, W.J.: Analysis of strengthening in AA6111 during the early stages of aging: Atom probe tomography and yield stress modelling. Acta Mater. 61(19), 7285 (2013).CrossRefGoogle Scholar
Hyde, J.M., Sha, G., Marquis, E.A., Morley, A., Wilford, K.B., and Williams, T.J.: A comparison of the structure of solute clusters formed during thermal ageing and irradiation. Ultramicroscopy 111(6), 664 (2011).CrossRefGoogle ScholarPubMed
Carinci, G. M., Olson, G. B., Liddle, J. A., Chang, L., and Smith, G. D. W.: AP/FIM study of multicomponent M2C precipitation. Proceedings of the 34th Sagamore Army Materials Research Conference, titled in Innovations in Ultrahigh-Strength Steel Technology (Lake George, New York, 1987), pp. 179–208.Google Scholar
Carinci, G.M., Hetherington, M.G., and Olson, G.B.: M2C carbide precipitation in AF1410 steel. J. Phys. Colloq. 49(C6), C6 (1988).CrossRefGoogle Scholar
Olson, G. B.: Science of steel. Proceedings of the 34th Sagamore Army Materials Research Conference, titled Innovations in Ultrahigh-Strength Steel Technology (Lake George, New York, 1987), pp. 3–66.Google Scholar
Grujicic, M.: Implication of elastic coherency in secondary hardening of high Co-Ni martensitic steels. J. Mater. Sci. 26(5), 1357 (1991).CrossRefGoogle Scholar
Speich, G.R. and Leslie, W.C.: Tempering of steel. Metall. Trans. 3(5), 1043 (1972).CrossRefGoogle Scholar
Delagnes, D., Pettinari-Sturmel, F., Mathon, M.H., Danoix, R., Danoix, F., Bellot, C., Lamesle, P., and Grellier, A.: Cementite-free martensitic steels: A new route to develop high strength/high toughness grades by modifying the conventional precipitation sequence during tempering. Acta Mater. 60(16), 5877 (2012).10.1016/j.actamat.2012.07.030CrossRefGoogle Scholar
Clark, R.A. and Thomas, G.: Design of strong tough Fe/Mo/C martensitic steels and the effects of cobalt. Metall. Trans. A 6(5), 969 (1975).CrossRefGoogle Scholar
Pereloma, E.V., Russell, K.F., Miller, M.K., and Timokhina, I.B.: Effect of pre-straining and bake hardening on the microstructure of thermomechanically processed CMnSi TRIP steels with and without Nb and Mo additions. Scr. Mater. 58(12), 1078 (2008).CrossRefGoogle Scholar
Sauvage, X., Quelennec, X., Malandain, J.J., and Pareige, P.: Nanostructure of a cold drawn tempered martensitic steel. Scr. Mater. 54(6), 1099 (2006).CrossRefGoogle Scholar
Grujicic, M.: Thermodynamics aided design of high Co-Ni secondary hardening steels. Calphad 14(1), 49 (1990).CrossRefGoogle Scholar
Grujicic, M.: Design of M2C carbides for secondary hardening. Proceedings of the 34th Sagamore Army Materials Research Conference, titled Innovations in Ultrahigh-Strength Steel Technology (Lake George, New York, 1987), pp. 223–238.Google Scholar
Zheng, Z.Q., Liu, W.Q., Liao, Z.Q., Ringer, S.P., and Sha, G.: Solute clustering and solute nanostructures in an Al–3.5Cu–0.4Mg–0.2Ge alloy. Acta Mater. 61(10), 3724 (2013).CrossRefGoogle Scholar
De Geuser, F., Lefebvre, W., and Blavette, D.: 3D atom probe study of solute atoms clustering during natural ageing and pre-ageing of an Al-Mg-Si alloy. Philos. Mag. Lett. 86(04), 227 (2006).CrossRefGoogle Scholar
Cao, L., Rometsch, P.A., and Couper, M.J.: Clustering behaviour in an Al–Mg–Si–Cu alloy during natural ageing and subsequent under-ageing. Mater. Sci. Eng. A 559, 257 (2013).CrossRefGoogle Scholar
Miller, M.K., Russell, K.F., Sokolov, M.A., and Nanstad, R.K.: APT characterization of irradiated high nickel RPV steels. J. Nucl. Mater. 361(2–3), 248 (2007).CrossRefGoogle Scholar
Miller, M.K. and Russell, K.F.: Embrittlement of RPV steels: An atom probe tomography perspective. J. Nucl. Mater. 371(1–3), 145 (2007).CrossRefGoogle Scholar
Kolli, R.P. and Seidman, D.N.: Comparison of compositional and morphological atom-probe tomography analyses for a multicomponent Fe-Cu steel. Microsc. Microanal. 13(04), 272 (2007).CrossRefGoogle ScholarPubMed
Miller, M.K., Sokolov, M.A., Nanstad, R.K., and Russell, K.F.: APT characterization of high nickel RPV steels. J. Nucl. Mater. 351(1–3), 187 (2006).CrossRefGoogle Scholar
Vaumousse, D., Cerezo, A., and Warren, P.J.: A procedure for quantification of precipitate microstructures from three-dimensional atom probe data. Ultramicroscopy 95, 215 (2003).CrossRefGoogle ScholarPubMed
Miller, M.K., Russell, K.F., Sokolov, M.A., and Nanstad, R.K.: Atom probe tomography of radiation-sensitive KS-01 weld. Philos. Mag. 85(4–7), 401 (2005).CrossRefGoogle Scholar
Miller, M.K., Russell, K.F., Sokolov, M.A., and Nanstad, R.K.: Atom probe tomography characterization of radiation-sensitive KS-01 weld. J. Nucl. Mater. 320(3), 177 (2003).CrossRefGoogle Scholar
Isheim, D., Gagliano, M.S., Fine, M.E., and Seidman, D.N.: Interfacial segregation at Cu-rich precipitates in a high-strength low-carbon steel studied on a sub-nanometer scale. Acta Mater. 54(3), 841 (2006).CrossRefGoogle Scholar
Isheim, D., Kolli, R.P., Fine, M.E., and Seidman, D.N.: An atom-probe tomographic study of the temporal evolution of the nanostructure of Fe–Cu based high-strength low-carbon steels. Scr. Mater. 55(1), 35 (2006).CrossRefGoogle Scholar
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