Title :
Metallic materials processing with intense pulsed electron beams
Author_Institution :
Tomsk State Pedagogical Univ., Russia
fDate :
6/20/1905 12:00:00 AM
Abstract :
The paper reviews the results of studies of the mechanisms for modification of the structure and properties of metals and alloys with intense pulsed electron beams over wide ranges of beam parameters (10-10 3 keV 0.02-300 μs, 1-2000 J/cm2). For pure metals (Fe and Cu) and Fe-C alloys used as examples, if has been demonstrated that increasing the amount and input rate of the energy delivered to a target allows various conditions for the formation of the beam-affected zone to be realized: from fast melt quenching to shock-wave loading. This makes it possible to produce various nonequilibrium structure-phase states, including nanocrystalline and shock-wave induced structures. It has been shown that low-energy, high-current electron beams are most convenient for the study of microstructural processes at pulsed melting. The sources of this type of beams are most suitable for the surface treatment of articles made of constructional and tool alloys aimed at improving their performance
Keywords :
electron beam applications; electron beam effects; melt texturing; nanostructured materials; radiation hardening; shock wave effects; surface hardening; Cu; Fe; Fe-C; Fe-C alloys; beam-affected zone; fast melt quenching; intense pulsed electron beams; metallic materials processing; microstructural processes; nanocrystalline structures; nonequilibrium structure-phase states; pulsed melting; shock-wave induced structures; shock-wave loading; Electron beams; Heating; Inorganic materials; Iron; Laser beams; Materials processing; Mechanical factors; Shock waves; Surface treatment; Thermal stresses;
Conference_Titel :
High-Power Particle Beams, 1998. BEAMS '98. Proceedings of the 12th International Conference on
Conference_Location :
Haifa
Print_ISBN :
0-7803-4287-9
DOI :
10.1109/BEAMS.1998.822397
