STUDY OF STRUCTURIZATION OF PROCESSES FOR INTRMETALIDE ALLOYS IN SYSTEM Ti-Al-Nb
The paper presents the results of metallographic, X-ray diffraction and micro-X-ray spectrometry analysis of g-TiAl alloy structure under thermochemical pressing. The results suggested the formation a two-phase structure g-TiAl + α<sub>2</sub>-Ti<sub>3</sub>Al in the g-TiAl alloy in the high-temperature synthesis. Under the conditions of thermochemical pressing at additional doping of Nb alloy, an intermetallic product with average grain size of 10-12 μm was obtained.