Skip to main content
Log in

Effect of Molybdenum on the Microstructure and Oxidation Behavior of Hot-Pressed TaCr2 Alloys

  • Published:
Metal Science and Heat Treatment Aims and scope

Influence of molybdenum additions on the microstructure and corrosion resistance of powder alloys based on the TaCr2 Laves phase is studied. The phase composition of the alloys in different conditions is determined. Growth in the mass of the alloys is determined after 100-h oxidation at 900°C. The effect of the molybdenum additions on the structure and properties of the TaCr2 -base alloys is shown to be positive. An optimum composition is suggested.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Fig. 6.
Fig. 7.
Fig. 8.

Similar content being viewed by others

References

  1. J. H. Zhu, L. M. Pike, C. T. Liu, and P. K. Liaw, “Point defects in binary NbCr2 Laves-phase alloys,” Scr. Mater., 39, 833 – 838 (1998).

    Article  Google Scholar 

  2. Y. H. He, P. K. Liaw, Y. Lu, et al., “Effects of processing on the microstructure and mechanical behavior of binary Cr – Ta alloys,” Mater. Sci. Eng. A, 329 – 331 (2002).

  3. A. Bhowmik and H. J. Stone, “Microstructure and mechanical properties of two-phase Cr – Cr2 Ta alloys,” Metall. Mater. Trans., 43A, 3283 – 3292 (2012).

    Article  Google Scholar 

  4. T. Takssug, “Defect structures and room-temperature mechanical properties of C15 Laves phase in Zr – X – Cr (X: Nb, Ta, and Hf) alloy systems,” Mater. Sci. Forum, 502, 169 – 174 (2005).

    Article  Google Scholar 

  5. M. Fujita, Y. Kaneno, and T. Takasugi, “Phase field and room-temperature mechanical properties of C15 Laves phase in Nb – Hf – Cr and Nb – Ta – Cr alloy systems,” J. Alloys Compd., 424, 283 – 288 (2006).

    Article  CAS  Google Scholar 

  6. D. F.Wang, P. K. Liaw, C. T. Liu, and E. P. Georeg, “Processing and microstructures of Cr – Ta and Cr – Ta – Mo composites reinforced by the Cr2 Ta Laves phase,” Office of Sci. Tech. Inform. Tech. Reports, 1 – 8 (2003).

  7. T. Ohta, Y. Kaneno, H. Inoue, T. Takasugi, and S. Hanada, “Phase field and room-temperature mechanical properties of the C15 Laves phase in the Zr – Ta – Cr alloy system,” Metall. Mater. Trans. A, 36(3), 583 – 590 (2005).

    Article  Google Scholar 

  8. M. P. Brady, C. T. Liu, J. H. Zhu, et al., “Effects of Fe additions on the mechanical properties and oxidation behavior of Cr2Ta Laves phase reinforced Cr,” Scr. Mater., 52(9), 815 – 819 (2005).

    Article  CAS  Google Scholar 

  9. A. Bhowmik, R. J. Bennett, B. Monserrat, et al., “Alloys based on Cr – Cr2 Ta containing Si,” Intermetallics, 48(5), 62 – 70 (2014).

    Article  CAS  Google Scholar 

  10. H. Z. Zheng, S. Q. Lu, J. Y. Shu, and W. Zhou, “Effects of Al on the microstructure and fracture toughness of NbCr2 alloys,” Rare Metal Mater. Eng. (in Chinese), 38(1), 80 – 85 (2009).

    CAS  Google Scholar 

  11. R. H. Tien, J. H. Zhu, C. T. Liu, and L. R.Walker, “Effect of Ru additions on microstructure and mechanical properties of Cr – TaCr2 alloys,” Intermetallics, 13(3–4), 361 – 366 (2005).

    Article  CAS  Google Scholar 

  12. A. Bhowmik, C. N. Jones, I. M. Edmonds, and H. J. Stone, “Effect of Mo, Al, and Si on the microstructure and mechanical properties of Cr – Cr2 Ta based alloys,” J. Alloys Compd., 530, 169 – 177 (2012).

    Article  CAS  Google Scholar 

  13. W. B. Pearson, The Crystal Chemistry and Physics of Metals and Alloys, JohnWiley and Sons Ltd., New York (1972), p. 151.

    Google Scholar 

  14. S. Q. Lu, H. Z. Zheng, L. P. Deng, and J. Yao, “Effects of silicon on the fracture toughness and oxidation behavior of hot pressed NbCr2 alloys,” Mater. Design, 51, 432 – 437 (2013).

    Article  CAS  Google Scholar 

  15. H. J. T. Ellingham, “Reducibility of oxides and sulfides in metallurgical processes,” Trans. Commun., J. Soc. Chem. Industry, 63, 125 – 139 (1944).

    Article  CAS  Google Scholar 

  16. P. Massard, J. C. Bernier, and A. Michel, “Effet Jahn–Teller dans le systeme Ta2CrO6 and TaCrO4 ,” J. Solid State Chem., 4(2), 269 – 274 (1972).

    Article  CAS  Google Scholar 

  17. M. A. Eissa, M. A. Elmasry, and M. F. Abadir, “Thermal study of the Cr – Mo – O system in air,” J. Thermal Anal. Calorim., 52(2), 584 – 594 (1998).

    Google Scholar 

  18. F. H. Wang, “The effect of nanocrystallization on the selective oxidation and adhesion of Al2O3 scales,” Oxid. Met., 48, 215 – 224 (1997).

    Article  CAS  Google Scholar 

  19. G. F. Chen and H. Y. Lou, “The effect of nanocrystallization on the oxidation resistance of Ni – 5Cr – 5Al alloy,” Scr. Mater., 41(8), 883 – 887 (1999).

    Article  CAS  Google Scholar 

  20. S. Hong and C. L. Fu, “Theoretical study on cracking behavior in two-phase alloys Cr – Cr2X (X = Hf, Nb, Ta, Zr),” Intermetallics, 9(9), 799 – 805 (2001).

    Article  CAS  Google Scholar 

Download references

The authors would like to thank the following grants of the China governmental funding agencies for support of the study: The National Natural Science Foundation (grant No. 51161020), The Aviation Science Foundation (grant No. 2015ZF56024 and the Key Laboratory for Microstructural Control of Metallic Materials of the Jiangxi Province (Nanchang Hangkong University) (grant No. JW201423001).

Author information

Authors and Affiliations

Authors

Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 45 – 52, April, 2019.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yao, J., Lu, Sq., Xiao, X. et al. Effect of Molybdenum on the Microstructure and Oxidation Behavior of Hot-Pressed TaCr2 Alloys. Met Sci Heat Treat 61, 249–255 (2019). https://doi.org/10.1007/s11041-019-00409-y

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11041-019-00409-y

Key words

Navigation