Strength and Ductility Balance on an Extruded Mg–Zn–Ca–La Alloy

Du, Yuzhou; Zheng, M.Y.; Qiao, Xiaoguang; Chen, Hongjun; Jiang, Bailing

doi:10.1002/adem.201600842

Cited by 4 publications

(4 citation statements)

References 43 publications

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“…The gauge length is 15 mm and cross sectional area is 6 Â 2 mm. In our previous investigations, [23] a good combined balance on mechanical properties of an extruded Mg-Zn-Ca-La alloy with the elongation-to-fracture of the as-extruded Mg-Zn-Ca-La alloy was only about 21%, which is much lower than that of the peakaged Mg-Zn-Ce alloy in the present study. During the initial stages of ageing, the hardness increased slightly.…”

Section: Methodscontrasting

confidence: 51%

“…Meanwhile, the elongation-to-fracture of the peak-aged alloys was retained up to 30%. In our previous investigations, [23] a good combined balance on mechanical properties of an extruded Mg-Zn-Ca-La alloy with the elongation-to-fracture of the as-extruded Mg-Zn-Ca-La alloy was only about 21%, which is much lower than that of the peakaged Mg-Zn-Ce alloy in the present study. Figure 3 compared the yield strength versus elongation to fracture between the Mg-Zn-Ce alloy in the present study and commercial Mg alloys, [24] as well as GW (Mg-Gd-Y) series alloys.…”

Section: Methodscontrasting

confidence: 51%

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Enhancing the Strength and Ductility in Mg–Zn–Ce Alloy through Achieving High Density Precipitates and Texture Weakening

Zheng

Qiao

et al. 2017

Adv Eng Mater

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The microstructure with weak fiber texture and dense precipitates is designed and produced through extrusion and subsequent ageing treatment of Mg-6Zn-0.2Ce (wt%) alloy. Results show that ageing treatment improves the strength of the as-extruded Mg-6Zn-0.2Ce (wt%) alloy and retains the ductility. The peak-aged alloy exhibits a good combination of strength and ductility, which is superior to the commercial Mg alloy. The yield strength and elongation to fracture of the peak-aged Mg-6Zn-0.2Ce (wt%) alloy are 225 MPa and 32.1%, respectively. The strength improvement of the peak-aged alloy is attributed to dense rod-like precipitates, and the superior ductility is mainly due to weaker texture and homogeneous microstructure.

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Section: Methodscontrasting

confidence: 51%

Section: Methodscontrasting

confidence: 51%

Enhancing the Strength and Ductility in Mg–Zn–Ce Alloy through Achieving High Density Precipitates and Texture Weakening

Zheng

Qiao

et al. 2017

Adv Eng Mater

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“…Magnesium (Mg) alloys, the lightest metal structural material in the industry, have been widely used in transportation, electronics, military, and other industries. [1][2][3][4] Among them, the development of magnesium alloys is closely tied to the solution of emission problems in the transportation field. [5][6][7] Improving the mechanical properties of magnesium alloys through plastic deformation technology has become an important approach for engineering application of magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

Improving Tension/Compression Asymmetry of a Hot‐Extruded Mg–Zn–Y–Zr Alloy via Yttrium Addition

et al. 2021

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In this study, effects of different yttrium (Y) contents ranging from 0 to 2.5 wt% on the microstructure and tension/compression asymmetry of as‐extruded Mg–5.5Zn–0.6Zr alloys are investigated. The influence of Y on improving the tension/compression yield strength is been studied. The results show that the volume fractions of the microscale I (Mg3YZn6) and W (Mg3Zn3Y2) phases remarkably increase with Y addition. Simultaneously, the nanoscale MgZn and Mg–Zn–Y phases uniformly precipitate during extrusion. Benefiting from the pinning of second phases, the microstructure is strikingly refined from 16.3 to 5.5 μm. Among them, the Y element promotes grain refinement most effectively when the Y content is 2.0 wt%. Second phase strengthening and fine‐grain strengthening enhance the hardening rate and suppress twinning, which leads to the improvement of the tension/compression asymmetry. Specifically, yield strength of 231 MPa and ultimate tensile strength of 312 MPa are achieved with 2.5 wt% Y addition. The relative increment is about 33.0% and 65.3% compared to the unmodified alloy, respectively. In addition, the tensile yield strength to compressive yield strength ratio (TYS/CYS) is reduced from 1.30 to 1.09.

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“…It was reported that enhanced deep draw ability of ZE10 alloy, reduced serrated cracking of AZ31 alloy, improved formability and ductility of Mg–Ca–Zr alloy were obtained after their texture was weakened. Balanced strength and ductility of Mg–Zn–Ca–La alloy was realized with texture modification . The methods aimed at modifying texture are based either on optimization of deformation mechanism or on interfering the dynamic recrystallization (DRX) process.…”

mentioning

confidence: 99%

Improving the Ductility of Mg–Gd–Y–Zr Alloy through Extrusion and a Following Rolling

et al. 2018

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Ductility of the Mg-8Gd-3Y-0.4Zr alloy is improved through extrusion and a following rolling performed on the as-cast alloy. Microstructure evolution, texture, and mechanical properties of the alloy are systematically investigated.The results indicate that the continuous-cluster distributed β phase particles observed in the as-cast alloy are fragmented and dissolved during the plastic deformation. Nearly random texture, improved ductility (by 60%), and strength (by 23%) are obtained. To uncover the formation mechanism of the texture, uniaxial compression on the alloys with and without homogenization (to obtain alloys without and with β phase) is performed. The microstructure characterization reveals that β phase impedes the grain boundary immigration, resulting in the nearly random texture, thereby improving the mechanical properties, especially the ductility of the alloy.

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Strength and Ductility Balance on an Extruded Mg–Zn–Ca–La Alloy

Cited by 4 publications

References 43 publications

Enhancing the Strength and Ductility in Mg–Zn–Ce Alloy through Achieving High Density Precipitates and Texture Weakening

Enhancing the Strength and Ductility in Mg–Zn–Ce Alloy through Achieving High Density Precipitates and Texture Weakening

Improving Tension/Compression Asymmetry of a Hot‐Extruded Mg–Zn–Y–Zr Alloy via Yttrium Addition

Improving the Ductility of Mg–Gd–Y–Zr Alloy through Extrusion and a Following Rolling

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