Effect of Laser Processing on Strength and Portevin–Le Chatelier Serrated Deformation of Aluminum Alloy
| Autor: | M. A. Zheltov, A. A. Shibkov, S. S. Kochegarov, A. A. Denisov, A. E. Zolotov, M. F. Gasanov |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Alloy technology industry and agriculture Portevin–Le Chatelier effect chemistry.chemical_element engineering.material Condensed Matter Physics Laser 01 natural sciences Indentation hardness Electronic Optical and Magnetic Materials law.invention chemistry law Aluminium 0103 physical sciences Ultimate tensile strength engineering Composite material Deformation (engineering) 010306 general physics Necking |
| Zdroj: | Physics of the Solid State. 61:1354-1362 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783419080249 |
| Popis: | The effect of surface processing by laser IR radiation on strength and Portevin–Le Chatelier serrated deformation of AlMg6 aluminum–magnesium alloy is experimentally studied. Laser processing consists in local “shots” on the surface at the nodes of a square grid in the gauge part of a flat sample. The conditions under which such laser processing causes an increase in the surface microhardness, ultimate tensile strength, and the critical strain of the first stress drop in the stress–strain curve; decreases the probability of deformation band formation; suppresses necking at the prefracture stage; and changes the main crack morphology. The possible mechanism of the effect of laser processing on band formation, serrated deformation, and alloy strength are discussed. |
| Databáze: | OpenAIRE |
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