On Silicides in High Temperature Titanium Alloys

  • C. Ramachandra Banaras Hindu University, Varanasi
  • Vakil Singh Banaras Hindu University, Varanasi
  • P. Rama Rao Defence Metallurgical Research Laboratory, Hyderabad
Keywords: Titanium alloys, IMI, Silicon bearing titanium

Abstract

High temperature titanium alloys like IMI 685 contain small amounts of silicon (~ 0.25 wt. per cent) to improve creep resistance. Different types of silicides, namely Ti5Si3 (TiZr)5Si3(S1) and (TiZr)6 Si3 (S2), have been observed to precipitate in various silicon-bearing titanium alloys depending upon their composition and heat treatment. The precipitation of silicides, their orientation relationship with the matrix in different alloys, and the beneficial influence of thermo-mechanical treatment on the distribution of silicides have been pointed out. The effect of silicides on mechanical properties and fracture of the commercial alloy IMI 685 is also indicated.

Author Biographies

C. Ramachandra, Banaras Hindu University, Varanasi
Department of Metallurgical Engineering, Banaras Hindu University,Varanasi-221 005
Vakil Singh, Banaras Hindu University, Varanasi
Department of Metallurgical Engineering, Banaras Hindu University,Varanasi-221 005
P. Rama Rao, Defence Metallurgical Research Laboratory, Hyderabad
Defence Metallurgical Research Laboratory, Hyderabad-500 258
Published
2014-01-20
How to Cite
RamachandraC., SinghV., & RaoP. (2014). On Silicides in High Temperature Titanium Alloys. Defence Science Journal, 36(2), 207-220. https://doi.org/10.14429/dsj.36.5972
Section
Special Issue Papers