Liquation defects in intermetallic titanium ortho-alloys and methods for their elimination

Novak A.V., Avilochev L.Yu., Alexeev E.B.
UDC
669.017.165:669.295
DOI
DOI: 10.18577/2307-6046-2024-0-4-18-32
Article PDF (Russian) (1.01 MB)
How to cite
Novak A.V., Avilochev L.Yu., Alexeev E.B. Liquation defects in intermetallic titanium ortho-alloys and methods for their elimination // Proceedings of VIAM. 2024. No. 4. DOI: DOI: 10.18577/2307-6046-2024-0-4-18-32. URL: https://test.viam.ru/en/journal/2024/4/2
Keywords
titanium, intermetallic Ti2AlNb alloys, liquation defects, vacuum-arc remelting, homogenizing heat treatment
Abstract

The segregation defects of ingots of intermetallic titanium alloys based on the ortho-phase (Ti2AlNb), obtained by vacuum-arc melting, are considered. Methods for eliminating similar defects of segregation origin in titanium, nickel and niobium-titanium alloys, the use of which is possible for the smelting of high-quality ingots from intermetallic titanium orthoalloysare presented. Based on the results of a study of the effect of homogenizing heat treatment on the chemical homogeneity of Ti–10V–2Fe–3Al alloy samples, it was concluded that similar work is necessary for ortho-alloy ingots

Reference list
  1. Kablov E.N. Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030». Aviacionnye materialy i tehnologii, 2015, no. 1 (34), pp. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
  2. Kablov E.N. VIAM: new generation materials for PD-14. Krylya Rodiny, 2019, no. 7–8, pp. 54–58.
  3. Kablov E.N., Bondarenko Yu.A., Kolodyazhny M.Yu., Surova V.A., Narsky A.R. Prospects for the creation of high-temperature heat-resistant alloys based on refractory matrices and natural composites. Voprosy materialovedeniya, 2020, no. 4 (104), pp. 64–78.
  4. Nochovnaya N.A., Ivanov V.I., Avilochev L.Yu. Intermetallic compound AlxTi – are promising material for high elevated temperatures (review). Part 1. The crystaline structure and properties of the intermetallic compound Al2Ti. Trudy VIAM, 2021, no. 3 (97), paper no. 03. Available at: http://viam-works.ru (accessed: December 17, 2023). DOI: 10.18577/2307-6046-2021-0-3-28-43.
  5. Nochovnaya N.A., Ivanov V.I., Alekseyev E.B., Islamov R.S. Intermetallic compound Ti2AlNb – promising material for aviation and space technology. Part 1. Crystal structure and phase transformations. Aviation materials and technologies, 2023, no. 3 (72), paper no. 04. Available at: http://www.journal.viam.ru (accessed: December 17, 2023). DOI: 10.18577/2713-0193-2023-0-3-42-61.
  6. Oglodkov M.S., Duyunova V.A., Nochovnaya N.A., Ivanov V.I., Avilochev L.Yu. Features of the technology manufacturing of deformed blanks from intermetallic alloys VIT1 for parts of the gas turbine engine. Trudy VIAM, 2021, no. 12 (106), paper no. 01. Available at: http://www.viam-works.ru (accessed: December 17, 2023). DOI: 10.18577/2307-6046-2021-0-12-3-13.
  7. Duyunova V.A., Oglodkov M.S., Putyrskiy S.V., Kochetkov A.S., Zueva O.V. Modern technologies for melting titanium alloy ingots (review). Aviation materials and technologies, 2022, no. 1 (66), paper no. 03. Available at: http://www.journal.viam.ru (accessed: December 17, 2023). DOI: 10.18577/2071-9140-2022-0-1-30-40.
  8. Anoshkin N.F. Zonal chemical heterogeneity of ingots. Moscow: Metallurgiya, 1976, 239 p.
  9. Shved F.I. Vacuum arc remelting ingot. Chelyabinsk: Tatyana Lurie Publishing House, 2009, 428 p.
  10. Kondrashov E.N., Rusakov K.A., Shchetnikov N.V., Leder M.O. Segregation defects in VAR titanium alloys. I. General defects. Russian Metallurgy (Metally), 2022, no. 6, рр. 553–558. DOI: 10.1134/S0036029522060118.
  11. Bibikov E.L., Ilyin A.A. Processes of crystallization and solidification: allowance. Moscow:
  12. Alfa-M, 2013, 352 p.
  13. Kurtz V., Fisher D.D. Fundamentals of solidification. Izhevsk: Institute of Computer Research, 2013, 300 p.
  14. Kondrashov E.N., Tarenkova N.Yu., Maksimov A.Yu., Kornilova M.A. Study of the crystallization morphology of VT3-1 Alloy during VAR. Journal of Engineering Thermophysics, 2009, vol. 18, no. 1, pp. 80–84. DOI: 10.1134/s1810232809010111.
  15. Kondrashov E.N., Rusakov K.A., Leder M.O. et al. Liquation defects in the VTI-4 alloy. Elektrometallurgiya, 2020, no. 7, pp. 28–32. DOI: 10.31044/1684-5781-2020-0-7-28-32.
  16. Leder M.O., Kondrashov E.N., Rusakov K.A. et al. Liquation defects in ortho-alloys VTI-4 and VIT1. All-Rus. Sci.-tech. conf. «Modern achievements in the field of creating advanced alloys and coatings for aviation and space technology». Moscow: VIAM, 2021, pp. 159–170.
  17. Auburtin P., Cockcroft S.L., Mitchell A., Schmalz A.J. Center Segregation. Freckles and De-velopment Directions for Niobium-Containing Superalloys. Superalloys 718, 625, 706 and
  18. Various Derivatives, 1997, pp. 47–54. DOI: 10.7449/1997/SUPERALLOYS_1997_47_54.
  19. Mitchell A. Melting, Casting and Forging Problems in Titanium Alloys. Materials Science & Engineering A, 1998, vol. 243, pp. 257–262. DOI: 10.1016/S0921-5093(97)00810-1.
  20. Cen M.J., Liu Y., Chen X. et al. Inclusions in melting process of titanium and titanium alloys. China Foundry, 2019, vol. 16, no. 9, pp. 223–231. DOI: 10.1007/s41230-019-9046-1.
  21. Mitchell A., Kawakami A., Cockcroft S. Beta fleck and segregation in titanium alloy ingots. High Temperature Materials and Processes, 2006, vol. 25, pp. 337–349. DOI: 10.1515/HTMP.2006.25.5-6.337.
  22. Kelkar K., Mitchell A. Beta Fleck formation in Titanium Alloys. MATEC Web of Conferences. Nantes: EDP Sciences, 2020, vol. 321 (2), art. 10001. DOI: 10.1051/matecconf/202032110001.
  23. Shang J.J., He Y.S., Yang C. et al. Freckles pattern and microstructure feature of Nb–Ti alloy produced by vacuum arc remelting. MATEC Web of Conferences. Nantes: EDP Sciences, 2020, vol. 321 (2), art. 10009. DOI: 10.1051/matecconf/202032110009.
  24. Kondrashov E.N., Leder M.O., Maksimov A.Yu. Simulation on the VT3-1 Alloy Ingot Solidification during VAR. Russian Metallurgy (Metally), 2018, vol. 2018, is. 12, pp. 1114–1120. DOI: 10.1134/S003602951812008X.
  25. Cui J., Li B., Liu Z. et al. Numerical investigation on the effect of axial magnetic field on metallurgical quality of ingots during vacuum arc remelting process. Journal of Materials Research and Technology, 2022, vol. 20 (3), pp. 1912–1926. DOI: 10.1016/j.jmrt.2022.07.186.
  26. Kondrashov E.N., Konovalov L.V., Leder M.O., Rusakov K.A. Control of the arc gap during VAR of Ti–10V–2Fe–3Al alloy ingots based on pulses with reverse polarity. Elektrometallurgiya, 2023, no. 2, pp. 10–16. DOI: 10.31044/1684-5781-2023-0-2-10-16.
  27. Tong J.-B., Zhang C.-J., Chen J.-S. et al. Effects of Homogenization Heat Treatment on the Fe Micro-Segregation in Ti-1023 Titanium Alloy. Materials, 2023, vol. 16, p. 4911. DOI: 10.3390/ma16144911.
  28. Shamblen C.E. Minimizing Beta Flecks in the Ti-17 Alloy. Metallurgical and Materials Transactions B, 1997, vol. 28, pp. 899–903. DOI: 10.1007/S11663-997-0017-3.
  29. Zhou X., Fu L., Ge H. et al. Enhancement of tensile properties of Ti2AlNb alloy added with Ta element. Materials Letters, 2022, vol. 329 (4), p. 133233. DOI: 10.1016/j.matlet.2022.133233.
  30. Kazantseva N.V., Lepikhin S.V. Study of the Ti–Al–Nb Phase Diagram. The Physics of Metals and Metallography, 2006, vol. 102, no. 2, pp. 169–180. DOI: 10.1134/S0031918X06080084.