Effects of yttrium and zinc on the texture, microstructure and tensile properties of hot-rolled magnesium plates

Shi, Baoping; Chen, R.S.; Ke, Wei

doi:10.1016/j.msea.2012.09.010

Cited by 69 publications

(11 citation statements)

References 32 publications

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“…The weak and spreading basal texture in the Mg–Y sheet may be attributed to the solute‐driven effect, the activation of compression and double twins during rolling, and grain growth restriction during annealing. [ 31,32 ]…”

Section: Resultsmentioning

confidence: 99%

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Xian

Chen

et al. 2021

Adv Eng Mater

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AZ31/Mg‐Y/AZ31 composites are fabricated by hot rolling bonding. To identify the formation mechanism of the microstructure in the interface adjacent region, additional hot rolling or/and diffusion annealing are also conducted on the base of the initial AZ31/Mg‐Y/AZ31 composite. Scanning electron microscopy, energy dispersive spectroscopy, and electron backscatter diffraction are used to characterize the microstructures and chemical compositional distributions. Vicker's microhardness tests are conducted to determine the local mechanical property. It is found that in the Mg–Y layer of the AZ31/Mg‐Y/AZ31 composite, the grain size in the interface‐adjacent region is much finer than that in the central part. Much finer Al2Y particles compared with those in the traditional Mg–Al–Y alloys are formed in the interface‐adjacent region. The formation of the fine grain in the interface‐adjacent region may be mainly related to the Al2Y particles rather than the accommodation deformation between layers. Both the grain refinement and the formation of Al2Y particles contribute to strengthening of the Mg–Y layer. The results in this work may provide a novel method to prepare fine and dispersed high‐melting‐point particles in Mg alloys, thus leading to strong and high‐thermal‐stability Mg alloys.

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Section: Resultsmentioning

confidence: 99%

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Xian

Chen

et al. 2021

Adv Eng Mater

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“…In addition, the dislocation lines related to the basal slips were also found interrelated to the LAGBs in Ref. [49]. The same LAGBs were also observed after the MDIF 30 passes (4.1) Z =̇exp(Q∕RT), at 500 °C which surely contributed to the grain refinement process.…”

Section: Discussionmentioning

confidence: 52%

Temperature Effects on the Microstructures of Mg–Gd–Y Alloy Processed by Multi-direction Impact Forging

Shah

Chen

et al. 2019

Acta Metall. Sin. (Engl. Lett.)

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A high strain rate multi-directional impact forging (MDIF) was applied to a solutionized Mg-Gd-Y-Zr alloy in the temperature range of 350-500 °C. Results demonstrate that the dominant deformation mode is twinning at a temperature below 400 °C, whereas at a medium temperature of 450 °C considerable continuous dynamic recrystallization was promoted by {10-12} extension twins. At a higher temperature of 500 °C, twinning activation was suppressed. New DRX grains were observed but their sizes were much bigger than those resulting from the MDIFed 50 passes at 450 °C, which are ascribed to the larger grain boundary mobility and atomic diffusion at 500 °C. Moreover, a non-basal weak texture was gained afterward MDIF at each temperature, which is credited to the MDIF process and the minor strain applied in each pass.

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“…Magnesium alloys are mainly based on Al and Al-free systems [26,34,[41][42][43][44]. The Al-based system are designated as AZ (Mg-Zn-Al) and the AM (Mg-Mn-Al) sequence [12,45,46]. The low melting Mg 17 Al 12 intermetallic phase accounts for poor creep resistance with operating temperature below 120 °C.…”

Section: Physical Metallurgy Of Mg and Its Alloysmentioning

confidence: 99%

“…The low melting Mg 17 Al 12 intermetallic phase accounts for poor creep resistance with operating temperature below 120 °C. Similarly, there are the AE (Mg-Al-RE) and AXJ (Mg-Al-Ca-Sr) series [45,46]. The AE series are mainly alloyed with rare earth elements with high creep resistance due to precipitates of rare element at grain boundaries [45,46].…”

Section: Physical Metallurgy Of Mg and Its Alloysmentioning

confidence: 99%

Welding of magnesium and its alloys: an overview of methods and process parameters and their effects on mechanical behaviour and structural integrity of the welds

et al. 2021

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An overview of welding methods and process parameters and its effects on mechanical behaviour and structural integrity of magnesium and its alloys are discussed. These alloys are less dense and beneficial structural alloys for improved energy efficiency, eco-friendliness and driver of circular economic model for sustainable design and innovative ecosystem. While the application of Mg-alloys is projected to increase, understanding the mechanical behaviour and structural integrity of welded joints are critical. Thus, fusion and solid-state welding processes of these alloys are discussed with emphasis on mechanical characterization. Laser welding is the most effective fusion welding technique for most Mg alloys whereas, the predominant solid-state method is friction stir welding. The importance of process variables such as heat inputs, welding velocity (speed) and post weld treatments on the microstructural evolution, on mechanical and physical properties of the distinct zones of the weld joints are described. The weldment is the most susceptible to failure due to phase transformation, defects such as microporosity and relatively coarse grain sizes after solidification. The implication of the design of quality weld joints of Mg alloys are explored with areas for future research directions briefly discussed.

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Effects of yttrium and zinc on the texture, microstructure and tensile properties of hot-rolled magnesium plates

Cited by 69 publications

References 32 publications

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Temperature Effects on the Microstructures of Mg–Gd–Y Alloy Processed by Multi-direction Impact Forging

Welding of magnesium and its alloys: an overview of methods and process parameters and their effects on mechanical behaviour and structural integrity of the welds

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