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  4. № 16 2009
  5. P. 163

Effect of Sc and Gd on high temperature oxidation resistance of Ti-36Al cast alloy

I.Gorna,
 
† N.Poryadchenko,
 
E.A. Nevinchana,
 
I.Yu. Okun’,
 
S.Firstov
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Electron Microscopy and Strength of Materials - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2009, #16
http://www.materials.kiev.ua/article/352

Abstract

Different character of effect of alloying with Sc and Gd on oxidation resistance of titanium intermetallic Ti-36Al alloy at 900 0C was established. It was showed that only small addition of Sc (0,05-0,09-wt. %) increased alloy oxidation resistance in contrast to Gd influence that growth of Gd content from 0,09 to 0,7-wt. % resulted in consistent decreasing of oxidation rate of alloys. Addition of 0,09-wt. % Sc or 0,7-wt. % Gd was established to decrease a mass gain at oxidation in five times in contrast with a mass gain at oxidation of an initial Ti-36Al alloy.


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