Influence of chemical composition, thermal treatment and structure on cracking sensitivity of titanium alloys to hot-salt stress corrosion

Zakharova L.V.
UDC
620.194.22:669.295
DOI
10.18577/2307-6046-2016-0-9-11-11
Article PDF (Russian) (680.7 KB)
How to cite
Zakharova L.V. Influence of chemical composition, thermal treatment and structure on cracking sensitivity of titanium alloys to hot-salt stress corrosion // Proceedings of VIAM. 2016. No. 9. DOI: 10.18577/2307-6046-2016-0-9-11-11. URL: https://test.viam.ru/en/journal/2016/9/11
Keywords
titanium alloys, hot salt stress corrosion, salt deposits, fragility, corrosion cracking, long durability, thermal treatment, microstructure, doping elements.
Abstract

It is reported about research of influence of chemical composition, thermal treatment and microstructure on titanium alloys sensitivity to cracking from hot salt stress corrosion. It is shown that the binary alloy of Ti–Al system containing 3% of Al possesses low sensitivity to cracking from hot salt stress corrosion at tests temperatures 400 and 500°C. At increase of Al quantity to 5–8% in titanium alloys their tendency to cracking significantly increases. The positive role of Fe and Mo, lack of V influence and negative role of Sn as alloying elements in Ti–Al system alloys for their cracking resistance increase from hot salt corrosion at tests temperatures 400 and 500°C is revealed. It is shown that influence of Zr and Cr is ambiguous and depends on the contents of Al in alloys and testing temperature. It is found out that the annealed condition provides with higher resistance to cracking from hot salt corrosion of Ti alloys than thermally strengthened at test temperature lower t

Reference list
  1. Kablov E.N. Innovacionnye razrabotki FGUP «VIAM» GNC RF po realizacii «Strategicheskih napravlenij razvitiya materialov i tehnologij ih pererabotki na period do 2030 goda» [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. №1 (34). S. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
  2. Kablov E.N. Sovremennye materialy – osnova innovatsionnoy modernizatsii Rossii [Modern materials – basis of innovative modernization of Russia] // Metally Evrazii. 2012. №3. S. 10–15.
  3. Antipov V.V. Strategiya razvitiya titanovyh, magnievyh, berillievyh i alyuminievyh splavov [Strategy of development of titanium, magnesium, beryllium and aluminum alloys] //Aviacionnye materialy i tehnologii. 2012. №S. S. 157–167.
  4. Kablov E.N. Materialy dlya izdeliya «Buran» – innovacionnye resheniya formirovaniya shestogo tehnologicheskogo uklada [Materials for «Buran» spaceship – innovative solutions of formation of the sixth technological mode] //Aviacionnye materialy i tehnologii. 2013. №S1. S. 3–9.
  5. Khorev A.I. Fundamentalnye i prikladnye raboty po titanovym splavam dlya «Burana» i perspektivnye napravleniya ikh razvitiya [Fundamental and applied projects on titanium alloys and prospective areas of their development as applied to «Buran» spaceship] // Aviacionnye materialy i tehnologii. 2013. №S1. S. 10–14.
  6. Kashapov O.S., Novak A.V., Nochovnaya N.A., Pavlova T.V. Sostoyanie, problemy i perspektivy sozdaniya zharoprochnyh titanovyh splavov dlya detalej GTD [Condition, problems and perspectives of creation of heat resisting titanium alloys for GTE details] // Trudy VIAM: elektron. nauch.-tehnich. zhurn. 2013. №3. St. 02. Available at: http://www.viam-works.ru (accessed: May 26, 2016).
  7. Horev A.I. Fundamentalnye i prikladnye raboty po konstrukcionnym titanovym splavam i perspektivnye napravleniya ih razvitiya [Fundamental and applied works on structural titanium alloys and perspective directions of their development] //Trudy VIAM: elektron. nauch.-tehnich. zhurn. 2013. №2. St. 04. Available at: http://www.viam-works.ru (accessed: May 26, 2016).
  8. Kablov E.N. Aviatsionnoe materialovedenie: itogi i perspektivy [Aviation materials science: results and perspectives] // Vestnik Rossiyskoy akademii nauk. 2002. T. 72. №1. S. 3–12.
  9. Solonina O.P., Glazunov S.G. Titanovye splavy. Zharoprochnye titanovye splavy [Titanium alloys. Heat resisting titanium alloys]. M.: Metallurgiya, 1976. 448 s.
  10. Kolachev B.A., Livanov V.A., Bukhanova A.A. Mekhanicheskie svoystva titana i ego splavov [Mechanical properties of titanium and its alloys]. M.: Metallurgiya, 1974. 543 s
  11. Gorynin I.V., Ushakov S.S, Khatuntsev A.N., Loshakova I.L. Titanovye splavy dlya morskoy tekhniki [Titanium alloys for sea equipment]. SPb.: Politekhnika, 2007. 387 s.
  12. Sinyavskiy S.V. Soprotivlenie titanovykh splavov razlichnym vidam korrozionnogo rastreskivaniya [Resistance of titanium alloys to different types of corrosion cracking] // Tekhnologiya legkikh splavov. 2010. №4. S. 80–85.
  13. Li S.Q., Lei J.F., Liu Y.-Y., Yu B.-X., Li Y.-L., Yang R. Fushi Kexue yu Fandhu Jishu. Hot-salt stress corrosion of titanium alloys of Ti811 and TC4 // Corros. Sci. And Prol. Tehnol. 2010. V. 22. N2. P. 79–84.
  14. Xiong Y., Zhu S., Wang F. Synergistic corrosion behavior of coated Ti60 alloys with NaCl deposit in moist air at elevated temperature // Corros. Sci. 2008. V. 50. P. 15–22.
  15. Ulrich Zwicker. Titan und Titanlegierungen. Springer-Verlag Berlin. Heidelberg. New York, 1974. 512 p.
  16. Metallograficheskiy analiz titanovykh splavov: PI1.2.785.2009 [Metallographic analysis of titanium alloys: production instruction 1.2.785.2009]. M.: VIAM, 2009. 45 s.
  17. Zakharova L.V. Vliyanie kisloroda vozdukha i tolshchiny solevykh otlozheniy na korrozionnoe rastreskivanie titanovykh splavov pri vysokikh temperaturakh v kontakte s NaCl [Influence of oxygen of air and thickness of salt deposits on corrosion cracking of titanium alloys at high temperatures in contact with NaCl] // Trudy VIAM: elektron. nauch.-tekhnich. zhurn. 2014. №10. St. 12. Available at: http://www.viam-works.ru (accessed: May 26, 2016). DOI: 10.18577/2307-6046-2014-0-10-12-12.
  18. GOST 10145–81. Metally. Metod ispytaniya na dlitelnuyu prochnost [Metals. Test method on long durability]. M: Izd-vo standartov, 1981. 7 s.