One of the most important parameters and criteria of the service reliability of special elements of airplanes is the endurance of the materials of such constructions under strong pulse-impact loads. The use of high-strength (alpha + beta)-titanium alloys of the transition class for this purpose has its advantages, in particular, enables one to reach a high specific strength [1]. Various technological versions of the thermomechanical treatment of alloys lead to different structural states of semifinished items, which exerts a decisive influence on their operating properties [1-3]. In the present paper, we describe some results of studying the effect of thermal treatment on the resistance of forge-rolled plates made of high-strength T110 titanium alloy (base Ti, 4.9 percent Al, 1.61 Fe, 1.25 V, 4.74 Nb, 0.9 Mo, and 0.1 percent Zr) to impact loads and choose the optimal mode of thermal treatment ensuring the highest endurance.
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