Conferences

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

 
O.Bankovskiy,
     

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky 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