Speaker
Description
This paper presents the experimental results obtained along the laser processing of some Al alloys for architectural applications. Hidden/open cavities are performed using the laser beams to improve the folding behavior of some metallic plates using an abkant equipment. The influencing factors (sheet thickness, cavities’ geometry and laser parameters) induce different structural changes in the Al alloy sheets and influence their folding behavior. Using techniques as XRD, SEM+EDS, EBSD, etc. before and after the laser processing, the Al alloys samples are complex analyzed in order to determine the impact of the thermal processing by the laser beams on the straight lined or curved folding. Based on previous experience in Al processing by laser beams [1], one of the main challenges of this research is to identify the technological conditions of the laser processing to obtain a bimodal crystalline grain size (micrometric and nanometric) [2] reported to improve the folding behavior of the metallic materials. Also, the identification of the deformation mechanisms in case of nanostructured crystalline grains will be studied [3, 4].
References
1 Gingu O, Mangra M, Orban R L, In-situ production of Al SiCp composite by laser deposition technology; Journal Of Materials Processing Technology vol: 90, pp: 187-190, ISSN: 0924-0136, doi:10.1016/S0924-0136(99)00129-6 (1999)
2 Skripnyak V A, Skripnyak N V, Skripnyak E G, Skripnyak V V, Influence of grain size distribution on the mechanical behavior of light alloys in wide range of strain rates, AIP Conference Proceedings 1793, 110001; https://doi.org/10.1063/1.4971664 (2017)
3 Ovid’ko I A, Deformation of nanostructures, Science 295, 5564, ProQuest Central, pg. 2386 (2002)
4 Huang X, Hansen N, Tsuji N, Hardening by annealing and softening by deformation in nanostructured metals, Science, 312, 249-251 (2006)
| Speaker Country | Romania |
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