Effects of asymmetric basal texture on the stretchability and the microstructure variations for the rolled ZK60 magnesium alloy sheet

Autor: Wenke Wang, Xinhua Liu, Zhihao Wang, Miaomiao Chen, Wenzhen Chen, Wencong Zhang, Hyoung Seop Kim
Přispěvatelé: Harbin Institute of Technology (HIT), University of Science and Technology Beijing [Beijing] (USTB), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA), Laboratoire de Génie Civil et Génie Mécanique (LGCGM), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Pohang University of Science and Technology (POSTECH), National Natural Science Foundation for Distinguished Young Scholars of China, National Natural Science Foundation of China, Natural Science Foundation of Shandong Province, Key Research and Development Plan in Shandong Province, National Research Foundation of Korea (NRF) - Korea government (MSIP), 51925401, 5197514652205344, [ZR2020QE171], 2019JZZY010364, [NRF-2022R1A5A1030 054]
Rok vydání: 2023
Předmět:
Zdroj: Journal of Alloys and Compounds
Journal of Alloys and Compounds, 2023, 933, pp.167794. ⟨10.1016/j.jallcom.2022.167794⟩
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2022.167794
Popis: International audience; In order to clarify the asymmetric basal texture effects on the stretchability and the microstructure var-iations of magnesium alloy sheet, two kinds of stretch forming samples were extracted along the rolling direction (RD) and the transverse direction (TD) from ZK60 magnesium alloy sheet with asymmetric basal texture. Their variations involving the microstructure and the stretch formability were investigated using a visco-plastic self-consistent model, along with the three-dimensional finite element method. The experi-mental and simulated results together showed that the plastic deformation during stretch forming was concentrated in the central region of the stretch sample. Such plastic deformation was more easily pro-pagated into the surrounding area in the TD sample, making its stretch formability higher by nearly 50.7 % than the RD sample. This was attributed to the weak basal texture in the TD sample which activated more basal slip and tension twinning and consequently increased its hardenability. Additionally, with the var-iation of the stretch forming behavior, the activation of basal slip narrowed the spread angle of the basal pole for the TD sample, while only increased the basal texture intensity for the RD sample. Moreover, activation of the prismatic slip rotated the < 10-10 > crystal direction toward the major strain direction (LD), promoting the development of < 10-10 > //LD-type texture in both samples. These results indicated that the comprehensive stretchability improvement of magnesium alloy sheet required weakening the basal texture symmetrically instead of asymmetrically.(c) 2022 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE
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