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  4. № 15 2008
  5. P. 137

Structure and properties of α2-Ti3Al – based alloys, alloying with Si

I.Gorna,
 
† O.Bankovskiy,
 
N.Bega,
 
A.Kotko,
 
L.Kulak,
 
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, 2008, #15
http://www.materials.kiev.ua/article/332

Abstract

Effect of joined alloying with Si and Al on a structure evolution and physical-mechanical properties of cast alloys based on the intermetallic α2-Ti3Al phase is studied. Domain structure is formed in Ti3(Al, Si) matrix depending on content of Si and Al with size increasing from 0,04 мкм in Ti-1Al-1Si alloy to 0,2 мкм in Ti-17Al-6Si alloy. Vicker"s hardness of alloys with different content of Al (11-17 %) increases against growing of concentration of Si nomonotonically. Alloys with equal content of Si and higher concentration of Al have the best heat resistance.


α2-TI3AL ALUMINIDE, ALLOYING, PHYSICAL-MECHANICAL PROPERTIES, STRUCTURE

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