Effects of Boron and Zirconium on Grain Boundary Morphology and Creep Resistance in Nickel-Based Superalloy
Source abstract
Abstract
Grain boundaries (GBs) in nickel-based superalloys have a significant influence on the creep resistance of these alloys. In this study, the trace elements of boron and zirconium were added to the newly designed LESS 1 (Ni-22Cr-20Co-2W-2Nb-1.5Al-1.5Ti-0.03C) alloy, and their effects on the GB precipitation behaviors of carbides were observed. The combined addition of boron and zirconium generates a continuous film structure containing MC carbides and M23(C, B)6-type boro-carbides, as well as a grain boundary γ′. Based on the change in microstructure, rupture time is significantly increased. According to the observed microstructures and simulation results, it was confirmed that boron forms M23(C, B)6-type boro-carbides and zirconium appears to stabilize MC carbides at GBs.
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Research context
OpenAlex topics: High Temperature Alloys and Creep · Advanced Materials Characterization Techniques · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
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1. R.C. Reed, The Superalloys Fundamentals and Applications, Cambridge University Press, New York, 2006, p 53–5410.1017/CBO9780511541285 ↗
2. L.Z. He, Q. Zheng, X.F. Sun, H.R. Guan, Z.Q. Hu, A.K. Tieu, C. Lu, and H.T. Zhu, Effect of carbides on the creep properties of a Ni-base superalloy M963, Mater. Sci. Eng. A, 2005, 397, p 297–30410.1016/j.msea.2005.02.038 ↗
3. Y.H. Rong, Y.X. Guo, and G.X. Hu, Characterization of M23C6 carbide precipitated at grain boundaries in a superalloy, Mater. Charact., 1989, 22, p 47–55
4. A. Baldan, Effects of grain size and carbides on the creep resistance and rupture properties of a conventionally cast nickel-base superalloy, Z. Metallkunde, 1992, 83(10), p 750–757
5. R.F. Decker and J.W. Freeman, The mechanism of beneficial effects of boron and zirconium on creep-rupture properties of a complex heat-resistant alloy, Trans. Metall. Soc. AIME, 1960, 218, p 277–285
6. K.G. Carroll, L.S. Darken, E.W. Filer, and L. Zwell, A new iron boro-carbide, Nature, 1954, 174, p 978–97910.1038/174978a0 ↗
7. M.A. Bruke, J. Greggi, Jr., and G.A. Whitlow, The effect of boron and carbon on the microstructural chemistries of two wrought nickel base superalloy, Scr. Mater., 1984, 18, p 91–94
8. W. Chen, M.C. Chaturvedi, N.L. Richards, and G. Mcmahon, Grain boundary segregation of boron in INCONEL 718, Metall. Trans. A, 1998, 29A, p 1947–195410.1007/s11661-998-0020-6 ↗
9. M. Thuvander and K. Stiller, Microstructure of a boron containing high purity nickel-based alloy 690, Mater. Sci. Eng. A, 2000, 281, p 96–10310.1016/S0921-5093(99)00741-8 ↗
10. Y. Murata, K. Suga, and N. Yukawa, Effect of transition elements on the properties of MC carbides in IN-100 nickel-based superalloy, J. Mater. Sci., 1986, 21, p 3653–366010.1007/BF02403016 ↗
11. Y.L. Tsai, S.F. Wang, H.Y. Bor, and Y.F. Hsu, Effects of Zr addition on the microstructure and mechanical behavior of a fine-grained nickel-based superalloy at elevated temperatures, Mater. Sci. Eng. A, 2014, 607, p 294–30110.1016/j.msea.2014.03.136 ↗
12. J. I. Youn, Y. K. Shin, B. I. Kang, Y. J. Kim, J. I. Suk, S. H. Ryu, Study on phase stability of new ni based superalloy LEES 1 designed to low the eta and sigma phase fraction at 700 °C. in Proceedings of the Energy materials 2014, November 4–6, 2014, (Xi’an, China), CSM & TMS, (2015), p 145–15010.1002/9781119027973.ch15 ↗
13. M.L. Saucedo-Munoz, S. Komazaki, T. Takahashi, T. Hashida, and T. Shoji, Creep property measurement of service-exposed SUS 316 austenitic stainless steel by the small-punch creep-testing technique, J. Mater. Res., 2002, 17(8), p 1945–195310.1557/JMR.2002.0288 ↗
14. K. Milička and F. Dobeš, Small punch testing of P91 steel, Int. J. Press. Vessels Pip., 2006, 83, p 625–63410.1016/j.ijpvp.2006.07.009 ↗
15. C.T. Sims and W.C. Hagel, The superalloys, Wiley, New York, 1972, p 64–69
16. G. D. Smith, S. J. Patel, The role of niobium in wrought precipitation-hardened nickel-base alloys. in Proceedings of the Sixth International Symposium on superalloys 718, 625, 706 and derivatives, ed. by E.A. Loria, October 2–5, 2005 (Pittsburgh, USA), TMS, (2005), p 135–15410.7449/2005/Superalloys_2005_135_154 ↗
17. C. Wang, Y. Guo, J. Guo, and L. Zhou, Microstructural stability and mechanical properties of a boron modified Ni-Fe based superalloy for steam boiler applications, Mater. Sci. Eng. A, 2015, 639, p 380–38810.1016/j.msea.2015.05.026 ↗
18. P. Kontis, H.A. Mohd Yusof, S. Pedrazzini, M. Danaie, K.L. Moore, P.A.J. Bagot, M.P. Moody, C.R.M. Grovernor, and R.C. Reed, On the effect of boron on grain boundary character in a new polycrystalline superalloy, Acta Mater., 2016, 103, p 688–69910.1016/j.actamat.2015.10.006 ↗
19. ASM handbook Volume 03: Phase diagram, ASM International, OH (1992)