Determination of laser shaping parameters from hardened duralumin
Journal Title: Механіка гіроскопічних систем - Year 2018, Vol 0, Issue 35
Abstract
Purpose. The purpose of the article is to identify the areas of repeated laser treatment options of AA2024-T4 alloy and the impact to the stability of its initial properties, and to indicate the causes reduction in the strength characteristics of GR in excess of critical processing parameter. Design/methodology/approach Laser treatment was conducted on the technological complex «ROFIN DY 044" based on Nd: YAG diode pumping laser. Focal spot diameter (d) is 6mm. Treatment was carried out with the 20 seconds time interval at processing speeds V = 7,5; 10; 15; 30 mm/s. Due to the thermal zone modern methods of materials science such as X-ray diffraction, micro durometric, metallographic and other physic-methods are studied. Findings. It is established that the critical values of processing speeds depend on the number of passes and in large quantities they should not be less V = 10 mm/s. It is shown that microhardness reduction in processing at V < 10 mm/s. is caused by an increase in the average temperature of the workpiece, leading to the dissolution phase strengthening. Originality/value. It is proved that in certain modes of the multiple laser processing it is possible to obtain high quality products with aged duralyumin.
Authors and Affiliations
Yu. V. Klyuchnikov,, A. M. Lutay, V. V. Synyuchenko
Keywords
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