Effect of deformation temperature on texture and mechanical properties of ZK60 magnesium alloy sheet rolled by multi-pass lowered-temperature rolling

Wang, Wenke; Chen, Wenzhen; Cui, Guorong; Wang, Erde

doi:10.1016/j.msea.2017.12.024

Cited by 87 publications

(23 citation statements)

References 35 publications

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“…Miao et al [4] illustrated grain size reduction from 25-40 to 2.8-4 μm and remarkable ductility of 30-35% in fracture elongation via the three-pass conventional rolling process. Wang et al [5] showed that the fracture elongation was significantly improved and the grain size was obviously refined due to the weakness of the {0002} basal texture via five passes rolling deformation of ZK60 magnesium alloy. Dynamic recrystallization (DRX) in the multi-rolling process has significant influence on grain refinement, ductility enhancing and texture ameliorating [6].…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties and Texture Evolution of Mg–Al–Zn–La–Gd–Y Magnesium Alloy by Hot Extrusion and Multi-Pass Rolling

Liao

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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A high-ductility Mg-8.10Al-0.42Zn-0.51Mn-1.52La-1.10Gd-0.86Y (wt%) alloy was developed by hot extrusion and multi-rolling processes. Relationships between microstructure, mechanical properties and texture evolution of the extruded and rolled alloy were investigated. The rolling process had significant effect on grain refinement of the extruded plate. The grain size reduced from 12.3 to 4.9 μm with the increasing rolling pass. With the increase in rolling pass, the proportion of dynamic recrystallized (DRXed) grains increases due to particle-stimulated nucleation, grain boundary nucleation and twin induced nucleation. In the process of multiple rolling, the basal pole gradually tilted from normal direction to transverse direction due to the asymmetric deformation and irregular grain deformation, resulting in the weakening of the base texture. The results showed that grain refinement and texture weakening were the main reasons for the good ductility of the alloy.

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Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties and Texture Evolution of Mg–Al–Zn–La–Gd–Y Magnesium Alloy by Hot Extrusion and Multi-Pass Rolling

Liao

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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“…Clearly, all the sheets exhibited a strong basal texture, in which nearly all the c-axes were parallel to the normal direction (ND). This was frequently seen in rolled sheets, and its formation could be attributed to the stress state in rolling process [ 16 , 32 ]. According to the literature [ 33 ], the slip plane would gradually rotate toward the rolling plane.…”

Section: Resultsmentioning

confidence: 99%

“…However, in the above process methods, hot rolling was considered to be the most suitable method for industrial sheet fabrication, owing to the absence of intermediate annealing. Prior work had suggested that hot rolling could not only refine the grain size, but also improve the microstructure homogeneity via multiple DRX [ 5 , 16 ]. Essentially, DRXed grain size was closely related to the Zener–Hollomon parameter Z (

, where

is the strain rate, T is the deformation temperature, Q is the activation energy, and R is the gas constant) [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Critical Rolling Process Parameters for Dynamic Recrystallization Behavior of AZ31 Magnesium Alloy Sheets

et al. 2018

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In this work, the influence of various rolling temperatures and thickness reductions on the dynamic recrystallization (DRX) behavior of AZ31 magnesium alloy sheets was investigated. Meanwhile, the texture variation controlled by DRX behavior was analyzed. Results suggested that, with the help of DRX behavior, reasonable matching of rolling temperature and thickness reduction could effectively refine the grain size and improve the microstructure homogeneity. Using the grain refinement and microstructure homogeneity as the reference, the critical rolling process parameters were 400 °C—30%, 300 °C—30%, and 250 °C—40% in the present work. In terms of basal texture variation, the occurrence of twins produced the largest maximum texture intensity. However, for the sheets with DRX behavior, the maximum texture intensity decreased sharply, but would steadily increase with the growth of DRXed grain. Additionally, for DRXed grains, the <11-20>//RD (RD: rolling direction) grains would gradually annex the <10-10>//RD grains with the growth of DRXed grains, which finally made their texture component become the dominant texture state. However, when the deformation continued, the <10-10> in DRXed grains would rotate toward the RD again. Weighted by the fracture elongation of AZ31 magnesium alloy sheet, the critical thickness reductions were 30–40% under the rolling temperature of 400 °C.

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“…[3][4][5][6] Also, extensive studies have been performed to improve the material, metallurgical, and mechanical properties of different types of magnesium alloys through surface treatment, heat treatment, and the addition of various elements. [7][8][9][10] The achievements of previous research show that the combination of aluminum with magnesium leads to enhance mechanical properties more than other compounds of Mg alloy. In industrial systems, especially mechanical components, two types of failures occur without prior knowledge and lead to high economic losses.…”

Section: Introductionmentioning

confidence: 99%

Mechanical characterization and creep strengthening of AZ91 magnesium alloy by addition of yttrium oxide nanoparticles

Kiarasi¹,

Babaei²,

Bidgoli

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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In the current research, the authors have attempted to improve the mechanical properties and creep behavior of the magnesium alloy Mg–9Al–1Zn (AZ91) in three different stress levels. To this end, the present study investigated experimentally the addition effects of different values of yttrium oxide nanoparticles to the AZ91. In this regard, weight percentages of 0.5%, 1%, 1.5%, and 2% nanoparticles were added to the material using the vortex casting method. Then, various test specimens were fabricated based on the ASTM standards by utilizing a Computer Numerical Control lathe machine. Different experiments were performed, and the results of different groups were compared with each other. The results revealed that the addition of yttrium oxide (Y2O3) nanoparticles increases the strength of AZ91 magnesium alloy until the nanoparticles do not clump in the microstructure. In other words, the tensile strength of the nanocomposite increased by adding nanoparticles up to 1.5%, but by adding 2% of nanoparticles, we found that the tensile strength is lower than that of pure magnesium. Moreover, one of the most important achievements of this study is that if the nanoparticles do not clump in the material microstructure, the addition of Y2O3 increases the rate of stable creep (the secondary creep stage). Also, the experimental results indicated that the highest stable creep rate is related to the nanocomposite with 1.5% yttrium oxide nanoparticles. Furthermore, the maximum hardness of the material was obtained in the same case.

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Effect of deformation temperature on texture and mechanical properties of ZK60 magnesium alloy sheet rolled by multi-pass lowered-temperature rolling

Cited by 87 publications

References 35 publications

Microstructure, Mechanical Properties and Texture Evolution of Mg–Al–Zn–La–Gd–Y Magnesium Alloy by Hot Extrusion and Multi-Pass Rolling

Microstructure, Mechanical Properties and Texture Evolution of Mg–Al–Zn–La–Gd–Y Magnesium Alloy by Hot Extrusion and Multi-Pass Rolling

Critical Rolling Process Parameters for Dynamic Recrystallization Behavior of AZ31 Magnesium Alloy Sheets

Mechanical characterization and creep strengthening of AZ91 magnesium alloy by addition of yttrium oxide nanoparticles

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