The temperature dependence of ultimate strengthof aluminized Ti foils was investigated under different regimesof heat treatment. The influence of heat treatment on themicrostructure and phase composition was defined as a functionof depth. It is shown that near the surface layers consist of α-and α2-phases and concentration of Al decreases with depthfrom 10 to 2%. The optimum regime of heat treatment wasdefined for producing the finely divided structure of near thesurface layer and increasing the high-temperature strengih withretention of sufficient good plasticity. Under electron beamoperation the mcchanical properties of aluminized Ti foils arelittle or no modified and so the foils may be used as outletwindows of high-current electron accelerators.
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