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Wpływ tekstury na mechanizmy deformacji magnezu i stopu AZ61
Języki publikacji
Abstrakty
The effect of the initial texture on the deformation mode and mechanical properties was studied in magnesium and its AZ61 alloy. Both materials had a very similar initial texture. Two cases were investigated: samples with a texture where the basal slip system was blocked, and samples having a texture where the basal slip system was allowed to activate. The samples were deformed by compression at room temperature at a strain rate of 10−3 s−1. It was found that the initial texture had a very strong impact on the deformation mode in magnesium; however, there was no effect of the initial texture on the deformation mode in the case of AZ61. The investigations were compared to simulations of texture evolution using the Taylor model. From the simulations, the Taylor factor and slip system activity were obtained. It was found that, in the case of magnesium, twinning or slip (both basal and non-basal) are the two main deformation modes, while in the case of AZ61, slip is the only main deformation mechanism despite the initial texture. The impact of the initial texture is discussed in more detail in the present study.
W pracy badano wpływ początkowej tekstury na mechanizmy deformacji i właściwości mechaniczne magnezu i stopu magnezu AZ61. Zbadano dwa przypadki: próbki, w których bazalny system poślizgu został zablokowany, oraz próbki, w których bazalny system poślizgu mógł być aktywowany. Próbki odkształcano przez ściskanie w temperaturze pokojowej z prędkością odkształcania 10-3 s-1. Stwierdzono, że początkowa tekstura miała bardzo silny wpływ na sposób deformacji magnezu; jednak w przypadku AZ61 nie zauważono podobnego efektu wpływu początkowej tekstury na właściwości mechaniczne. Badania porównano z symulacjami ewolucji tekstury za pomocą modelu Taylora. Z symulacji uzyskano współczynnik Taylora i aktywności systemów poślizgu. Stwierdzono, że w przypadku magnezu, w zależności od początkowej tekstury, poślizg (zarówno w bazalnym systemie, jak i niebazalnych systemach poślizgu) oraz bliźniakowanie są dwoma głównymi mechanizmami deformacji, natomiast w przypadku AZ61 głównym mechanizmem deformacji, pomimo początkowej tekstury, jest tylko poślizg.
Czasopismo
Rocznik
Tom
Strony
91--100
Opis fizyczny
Bibliogr. 23 poz., rys., tab., wykr.
Twórcy
autor
- AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Non-Ferrous Metals Engineering, Krakow, Poland
Bibliografia
- [1] Gehrmann R., Frommert M.M., Gottstein G.: Texture effects on plastic deformation of magnesium. Materials Science and Engineering A, 395, 1–2 (2005), 338–349
- [2] Wang W., Zhang W., Chen W., Cui G., Wang E.: Effect of initial texture on the bending behavior, microstructure and texture evolution of ZK60 magnesium alloy during the bending process. Journal of Alloys and Compounds, 737 (2018), 505–514
- [3] Tadano Y.: Formability of magnesium sheet with rolling texture. International Journal of Mechanical Sciences, 108–109 (2016), 72–82
- [4] Sułkowski B., Pałka P.: Deformation behavior of AZ61 magnesium alloy systematically rolled and annealed at 450°C. Kovové Materiály, 54, 3 (2016), 147–151
- [5] Huang X., Suzuki K., Saito N.: Textures and stretch formability of Mg-6-Al-1Zn magnesium alloy sheets rolled at high temperatures up to 793K. Scripta Materialia, 60 (2009), 651–654
- [6] Su J., Kabir A.S.H., Sanjari M., Yue S.: Correlation of static recrystallization and texture weakening of AZ31 magnesium alloy sheets subjected to high speed rolling. Materials Science & Engineering A, 674 (2016) 343–360
- [7] Bian M.Z., Shin K.S.: {10 2} Twinning Behavior in Magnesium Single Crystal. Metals and Materials International, 19, 5 (2013), 999–1004
- [8] Wang Y., Choo H.: Influence of texture on Hall–Petch relationships in an Mg alloy. Acta Materialia, 81 (2014), 83–97
- [9] Martin É., Mishra R.K., Jonas J.J.: Effect of twinning on recrystallization textures in deformed magnesium alloy AZ31. Philosophical Magazine, 91, 27 (2011), 3613–3626
- [10] Guan D., Rainforth W.M., Ma L., Wynne B., Gao J.: Twin recrystallization mechanism and exceptional contribution to texture evolution during annealing in a magnesium alloy. Acta Materialia, 126 (2017), 132–144
- [11] Wang W., Zhang W., Chen W., Cui G., Wang E.: Effect of initial texture on the bending behavior, microstructure and texture evolution of ZK60 magnesium alloy during the bending process. Journal of Alloys and Compounds, 737 (2018), 505–514
- [12] Huang X., Suzuki K., Chino Y.: Influences of initial texture on microstructure and stretch formability of Mg-3Al-1Zn alloy sheet obtained by a combination of high temperature and subsequent warm rolling. Scripta Materialia, 63 (2010), 395–398
- [13] Zeng Z.R., Zhu Y.M., Xu S.W., Bian M.Z., Davies C.H.J., Birbilis N., Nie J.F.: Texture evolution during static recrystallization of cold-rolled magnesium alloys. Acta Materialia, 105 (2016), 479–494
- [14] Wang Y.N., Huang J.C.: Texture analysis in hexagonal materials. Materials Chemistry and Physics, 81, 1 (2003), 11–26
- [15] Graff S.: Micromechanical Modeling of the Deformation of HCP Metals. GKSS-Forschungszentrum Geesthacht GmbH, Geesthacht 2008
- [16] Piehler H.R.: Crystal-Plasticity Fundamentals. In: ASM Handbook Volume 22A: Fundamentals of Modeling for Metals Processing, Furrer D.U., Semiatin S.L. (eds.), ASM International, Materials Park, Ohio, 2009, 232–238
- [17] Van Houtte P.: A comprehensive mathematical formulation of an extended Taylor–Bishop–Hill model featuring relaxed constraints, the Renouard–Winterberg theory and a strain rate sensitivity model. Textures and Microstructures, 8–9 (1988), 313–350
- [18] Van Houtte P., Li S., Seefeldt M., Delannay L.: Deformation texture prediction: from the Taylor model to the advanced Lamel model. International Journal of Plasticity, 21, 3 (2005), 589–624
- [19] Shen J.H., Li Y.L., Wei Q.: Statistic derivation of Taylor factors for polycrystalline metals with application to pure magnesium. Materials Science & Engineering A, 582 (2013), 270–275
- [20] Hutchinson W.B., Barnett M.R.: Effective values of critical resolved shear stress for slip in polycrystalline magnesium and other HCP metals. Scripta Materialia, 63, 7 (2010), 737–740
- [21] Herrera-Solaz V., Hidalgo-Manrique P., Pérez-Prado M.T., Letzig D., Llorca J., Segurado J.: Effect of rare earth additions on the critical resolved shear stresses of magnesium alloys. Materials Letters, 128 (2014), 199–203
- [22] Sánchez-Martín R., Pérez-Prado M.T., Segurado J., Bohlen J., Gutierrez-Urrutia I., Llorca J., Molina-Aldareguia J.M.: Measuring the critical resolved shear stresses in Mg alloys by instrumented nanoindentation. Acta Materialia, 71 (2014), 283–292
- [23] Akhtar A., Teghtsoonian E.: Solid solution strengthening of magnesium single crystals – II: The effect of solute on the ease of prismatic slip. Acta Metallurgica, 17 (1969), 1351–1356
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-e3608274-031d-4781-be78-5518676a6540