ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Spot heating system utilizing a fiber-laser has been developed in order to controlrecrystallization, grain growth process and texture development. The newly developed systemenables the laser beam to be focused onto the surface of specimen with a minimum diameter ofaround 10 m. The maximum power of laser in the present system is 100W. Specimens of coldrolled pure aluminum plates of 1mm thick are used for local recrystallization treatment by the spotheating. After laser-spot heating, preferentially recrystallized grains appeared in the irradiated andheat affected region with a diameter depending on the laser power density. The present systemenables spot heating on any critical points of the specimen surface. Some laser-heated specimenshow locally recrystallized regions occupied by almost single grain having similar crystallographicorientation as that of cold rolled matrix. But the orientation of recrystallized grain is not always thesame as that of the matrix. Selective spot heating on grains having peculiar orientation would bringabout a possibility of texture control that has not been achieved by means of conventional materialsprocessing
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.329.pdf
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