On Silicides in High Temperature Titanium Alloys

Authors

  • C. Ramachandra Banaras Hindu University, Varanasi
  • Vakil Singh Banaras Hindu University, Varanasi
  • P. Rama Rao Defence Metallurgical Research Laboratory, Hyderabad

DOI:

https://doi.org/10.14429/dsj.36.5972

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

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Published

2014-01-20

How to Cite

Ramachandra, C., Singh, V., & Rao, P. R. (2014). On Silicides in High Temperature Titanium Alloys. Defence Science Journal, 36(2), 207–220. https://doi.org/10.14429/dsj.36.5972

Issue

Section

Special Issue Papers