The coarse-grained new-generation Fe-Al-Y2O3-based oxide dispersion strengthened (ODS) alloys contain 5 vol.% homogeneously dispersed yttria nano-precipitates and exhibit very promising creep and oxidation resistance above 1000 °C. The alloy is prepared by the consolidation of mechanically alloyed powders via hot rolling followed by secondary recrystallization. The paper presents a systematic study of influence of rolling temperature on final microstructure and creep at 1100 °C for two grades (Fe-10Al-4Y2O3 and Fe-9Al-14Cr-4Y2O3 in wt%) of new-generation ODS alloys. The hot rolling temperatures exhibit a rather wide processing window and the influence of Cr-alloying on creep properties is evaluated as only slightly positive.

Institute of Physics of Materials of the CAS 616 62 Brno Czech Republic

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Pollock T.M., Argon A.S. Directional coarsening in nickel-base single crystals with high volume fractions of coherent precipitates. Acta Metall. Mater. 1994;42:1859–1874. doi: 10.1016/0956-7151(94)90011-6. DOI

Svoboda J., Lukáš P. Model of creep in 〈001〉-oriented superalloy single crystals. Acta Mater. 1998;46:3421–3431. doi: 10.1016/S1359-6454(98)00043-3. DOI

Kunčická L., Kocich R., Hervoches C., Macháčková A. Study of structure and residual stresses in cold rotary swaged tungsten heavy alloy. Mater. Sci. Eng. A. 2017;704:25–31. doi: 10.1016/j.msea.2017.07.096. DOI

Stratil L., Horník V., Dymáček P., Roupcová P., Svoboda J. The influence of aluminium content on oxidation resistance of new-generation ODS alloy at 1200 °C. Metals. 2020;10:1478. doi: 10.3390/met10111478. DOI

Material Data Sheet. Inco Alloys Limitted; Hereford, UK: Incoloy, alloy MA 956; Incoloy, alloy MA 957.

Korb G., Rühle M., Martinz H.-P. New iron based ODS-superalloys for high demanding applications; Proceedings of the International Gas Turbine and Aeroengine Congress and Exposition; Orlando, FL, USA. 3–6 June 1991.

Kazimierzak B., Prignon J.M., Fromont R.I. An ODS Material with outstanding creep and oxidation resistance above 1100 °C. Mater. Des. 1992;13:67–70. doi: 10.1016/0261-3069(92)90109-U. DOI

Ukai S., Harada M., Okada H., Inoue M., Nomura S., Shikakura S., Nishida T., Fujiwara M., Asabe K. Tube manufacturing and mechanical properties of oxide dispersion strengthened ferritic steel. J. Nucl. Mater. 1993;204:74–80. doi: 10.1016/0022-3115(93)90201-9. DOI

Schaeublin R., Leguey T., Spätig P., Baluc N., Victoria M. Microstructure and mechanical properties of two ODS ferritic/martensitic steels. J. Nucl. Mater. 2002;307–311:778–782. doi: 10.1016/S0022-3115(02)01193-5. DOI

Klueh R.L., Shingledecker J.P., Swindeman R.W., Hoelzer D.T. Oxide dispersion-strengthened steels: A comparison of some commercial and experimental alloys. J. Nucl. Mater. 2005;341:103–114. doi: 10.1016/j.jnucmat.2005.01.017. DOI

Kim J.H., Byun T.S., Hoelzer D.T., Kim S.-W., Lee B.H. Temperature dependence of strengthening mechanisms in the nanostructured ferritic alloy 14YWT: Part I-Mechanical and microstructural observations. Mater. Sci. Eng. A. 2013;559:101–110. doi: 10.1016/j.msea.2012.08.042. DOI

Byun T.S., Yoon J.H., Wee S.H., Hoelzer D.T., Maloy S.A. Fracture behaviour of 9Cr nanostructured ferritic alloy with improved fracture toughness. J. Nucl. Mater. 2014;449:39–48. doi: 10.1016/j.jnucmat.2014.03.007. DOI

Hoelzer D.T., Unocic K.A., Sokolov M.A., Byun T.S. Influence of processing on the microstructure and mechanical properties of 14YWT. J. Nucl. Mater. 2016;471:251–265. doi: 10.1016/j.jnucmat.2015.12.011. DOI

Rösler J., Arzt E. A new model based creep equation for dispersion strengthened materials. Acta Metall. 1990;38:671–683. doi: 10.1016/0956-7151(90)90223-4. DOI

Fischer F.D., Svoboda J., Fratzl P. A Thermodynamical approach to grain growth and coarsening. Philos. Mag. 2003;83:1075–1093. doi: 10.1080/0141861031000068966. DOI

Bártková D., Šmíd M., Mašek B., Svoboda J., Šiška F. Kinetic study of static recrystallization in an Fe–Al–O ultra-fine-grained nanocomposite. Philos. Mag. Lett. 2017;97:379–385. doi: 10.1080/09500839.2017.1378445. DOI

Svoboda J., Hornik V., Stratil L., Hadraba H., Masek B., Khalaj O., Jirkova H. Microstructure Evolution in ODS Alloys with a High-Volume Fraction of Nano Oxides. Metals. 2018;8:1079. doi: 10.3390/met8121079. DOI

Fu J., Brouwer J.C., Richardson I.M., Hermans M.J.M. Effect of mechanical alloying and spark plasma sintering on the microstructure and mechanical properties of ODS Eurofer. Mater. Des. 2019;177:107849. doi: 10.1016/j.matdes.2019.107849. DOI

Massey C.P., Dryepondt S.N., Edmondson P.D., Terrani K.A., Zinkle S.J. Influence of mechanical alloying and extrusion conditions on the microstructure and tensile properties of Low-Cr ODS FeCrAl alloys. J. Nucl. Mater. 2018;512:227–238. doi: 10.1016/j.jnucmat.2018.10.017. DOI

Li J., Wu S., Ma P., Yang Y., Wu E., Xiong L., Liu S. Microstructure evolution and mechanical properties of ODS FeCrAl alloys fabricated by an internal oxidation process. Mater. Sci. Eng. A. 2019;757:42–51. doi: 10.1016/j.msea.2019.04.088. DOI

Li Z., Lu Z., Xie R., Lu C., Shi Y., Liu C. Effects of Y2O3, La2O3 and CeO2 additions on microstructure and mechanical properties of 14Cr-ODS ferrite alloys produced by spark plasma sintering. Fusion Eng. Des. 2017;121:159–166. doi: 10.1016/j.fusengdes.2017.06.039. DOI

Auger M.A., Hoelzer D.T., Field K.G., Moody M.P. Nanoscale analysis of ion irradiated ODS 14YWT ferritic alloy. J. Nucl. Mater. 2020;528:151852. doi: 10.1016/j.jnucmat.2019.151852. DOI

Zhang G., Zhou Z., Mo K., Miao Y., Xu S., Jia H., Liu X., Stubbins J.F. The effect of thermal-aging on the microstructure and mechanical properties of 9Cr ferritic/martensitic ODS alloy. J. Nucl. Mater. 2019;522:212–219. doi: 10.1016/j.jnucmat.2019.05.023. DOI

Kumar D., Prakash U., Dabhade V.V., Laha K., Sakthivel T. Development of Oxide Dispersion Strengthened (ODS) Ferritic Steel through Powder Forging. J. Mater. Eng. Perform. 2017;26:1817–1824. doi: 10.1007/s11665-017-2573-2. DOI

Zhou Z., Sun S., Zou L., Schneider Y., Schmauder S., Wang M. Enhanced strength and high temperature resistance of 25Cr20Ni ODS austenitic alloy through thermo-mechanical treatment and addition of Mo. Fusion Eng. Des. 2019;138:175–182. doi: 10.1016/j.fusengdes.2018.11.020. DOI

Pal S., Alam M.E., Maloy S.A., Hoelzer D.T., Odette G.R. Texture evolution and microcracking mechanisms in as-extruded and cross-rolled conditions of a 14YWT nanostructured ferritic alloy. Acta Mater. 2018;152:338–357. doi: 10.1016/j.actamat.2018.03.045. DOI

Svoboda J., Ecker W., Razumovskiy V.I., Zickler G.A., Fischer F.D. Kinetics of interaction of impurity interstitials with dislocations revisited. Prog. Mater. Sci. 2018;101:172–206. doi: 10.1016/j.pmatsci.2018.10.001. DOI

Svoboda J., Horník V., Riedel H. Modelling of Processing Steps of New Generation ODS Alloys. Met. Trans. A. 2020;51A:5296–5305. doi: 10.1007/s11661-020-05949-0. DOI

Svoboda J., Kunčická L., Luptáková N., Weiser A., Dymáček P. Fundamental improvement of creep resistance of new-generation nano-oxide strengthened alloys via hot rotary swaging consolidation. Materials. 2020;13 (under review) PubMed PMC

Riedel H. Materials Research and Engineering. Springer; Berlin, Germany: 1987. Fracture at high temperatures.

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The Effect of Heat Treatment on the Tribological Properties and Room Temperature Corrosion Behavior of Fe-Cr-Al-Based OPH Alloy

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