Abstract
It is shown that pulsed electron beam irradiation of commercially pure titanium at a beam energy density of 10 J/cm2, pulse duration of 150 μs, number of pulses of N = 5 pulses, and pulse repetition frequency of 0.3 Hz with attendant polymorphic α→β→α transformations allows a more than five-fold decrease in the grain and subgrain sizes of the material structure.
Highlights
Electron beams are widely used for vacuum treatment of materials, including their welding, melting, and annealing, as well as for modification of polymers, curing of lacquer coatings, sterilization of foodstuff and medical tools, microwave generation, and excitation of active media in gas lasers [1,2,3,4]
The polymorphic α α transformations involved in pulsed electron beam irradiation at 10 J/cm2, 150
Electron beam irradiation at 15 J/cm2, 100 s, N = 5 pulses, 0.3 Hz with attendant melting of the surface layer and its high-rate crystallization provides the formation of a structure in which the minimum average grain size is 8–10 m (Fig. 4, c)
Summary
Electron beams are widely used for vacuum treatment of materials, including their welding, melting, and annealing, as well as for modification of polymers, curing of lacquer coatings, sterilization of foodstuff and medical tools, microwave generation, and excitation of active media in gas lasers [1,2,3,4]. The technology of surface modification by intense pulsed electron beams holds much promise due to the possibility of increasing the wear resistance of materials, their corrosion or oxidation resistance, fatigue life, etc. The aim of the present study is to analyze the structure and properties of surface layers in commercially pure titanium irradiated by a submillisecond intense pulsed electron beam The technology of surface modification by intense pulsed electron beams holds much promise due to the possibility of increasing the wear resistance of materials, their corrosion or oxidation resistance, fatigue life, etc. [5,6,7].
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