Formability, mechanical and corrosive properties of Mg–Nd–Zn–Zr magnesium alloy seamless tubes

Zheng, Xingwei; Dong, Jie; Xiang, Ya-zhen; Chang, Jian-Wei; Wang, Fenghua; Jin, Li; Wang, Yingxin; Ding, Wenjiang

doi:10.1016/j.matdes.2009.08.040

Cited by 46 publications

(11 citation statements)

References 15 publications

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“…In addition, the precipitates in the DEAP alloy are smaller and distribute more uniformly than that in the OEAP alloy, which can effectively restrain the gliding of dislocation during tensile deformation. 26 Consequently, the improved yield strength of the EDAP can be ascribed to the grain refinement of both matrix and precipitated phase, and homogeneous microstructure. The yield strength of the OEAP and DEAP are improved by ∼18 and ∼10% respectively compared to those of the once and double extrusions without aging treatment according to our previous work, 24 and the elongation of the age treated alloys declines slightly.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Enhanced mechanical and corrosion properties of NZ20K alloy by double extrusion and aging processes for biomedical applications

Chen

Zhang

Dai

et al. 2016

Materials Technology

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In order to refine and homogenise microstructure and to improve mechanical properties of the magnesium alloys for biomedical application, the Mg-2.0Nd-0.1Zn-0.4Zr (wt-%, NZ20K) alloy with low amount of alloying elements was processed by double extrusion and aging processes (DEAP). Compared to the NZ20K alloy after once extrusion and aging processes (OEAP), the microstructure becomes finer and more homogeneous, and the elongation is raised up ∼121% by DEAP. Moreover, the yield strength and ultimate tensile strength are improved ∼27 and ∼16% respectively. Additionally, the corrosion rate of the NZ20K alloy by the DEAP is a little slower than that of the OEAP. It can be concluded that the mechanical properties, as well as the corrosion resistance of the NZ20K alloy, are able to be enhanced by the double extrusion and aging processes.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Enhanced mechanical and corrosion properties of NZ20K alloy by double extrusion and aging processes for biomedical applications

Chen

Zhang

Dai

et al. 2016

Materials Technology

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“…Moreover, the market price of Sm is much cheaper than that of Nd and Y [15]. It is, therefore, meaningful to produce low-price, heat-resistant Mg-Sm alloys with proper mechanical properties to compete with traditional Mg-RE alloys [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The Microstructures and Tensile Properties of As-Extruded Mg–4Sm–xZn–0.5Zr (x = 0, 1, 2, 3, 4 wt %) Alloys

Che

Cai

Cheng

et al. 2017

Metals

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Abstract:The microstructures and tensile properties of as-cast and as-extruded Mg-4Sm-xZn-0.5Zr (x = 0, 1, 2, 3, 4 wt %) alloys were systematically investigated by optical microscope, X-ray diffractometer (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). Numerous nanoscale dynamic precipitates could be observed in the as-extruded alloys containing high content of Zn, and the nanoscale particles were termed as (Mg,Zn) 3 Sm phase. Some basal disc-like precipitates were observed in as-extruded Mg-4Sm-4Zn-0.5Zr alloy, which were proposed to have a hexagonal structure with a = 0.556 nm. The dynamic precipitates effectively pinned the motions of DRXed (dynamic recrystallized) grain boundaries leading to an obvious reduction of DRXed grain size, and the tensile yield strength of as-extruded alloy was improved. The as-extruded Mg-4Sm-4Zn-0.5Zr alloy exhibits the best comprehensive mechanical properties at room temperature among all the alloys, and the yield strength, ultimate tensile strength and elongation are about 246 MPa, 273 MPa and 21% respectively.

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“…%) and low solubility at room temperature (~ 100 ppm), which make it suitable for potential age hardening [8]. The strength of age-hardened Mg-Nd alloys can be further enhanced through solid solution strengthening by controlled addition of third element such as zinc (Zn) [9,[10][11][12][13][14]. Researches have shown that addition of 0.2 wt.…”

Section: Introductionmentioning

confidence: 99%

“…% Zn to Mg-3 Nd wt. % alloy improves the mechanical properties through mainly solid solution strengthening mechanism [8,[12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive study of phase transformation in age-hardening of Mg–3Nd–0.2Zn by means of scanning transmission electron microscopy

2015

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The effects of thermal history on precipitation behavior and precipitation kinetics in Mg-3Nd-0.2Zn (wt. %) alloy were studied. The microstructure analysis of the aged alloys revealed the presence of new phases in the microstructure in addition to the old description: Super saturated solid solution (SSSS) → G. P. zones → β" → β'/β 1 → β, reported for Mg-Nd system. In this regard, the sequence of precipitation for the studied alloy was identified as: Super saturated solid solution (SSSS) → Clusters of atoms → G. P. zones (I, II, III) → β' → β 2 → β 1 / γ' → β. The formation of clusters of solute atoms in this system was confirmed by high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) and atom probe tomography analysis. In addition, new metastable phases designated as G. P. zones (I, II, III) and β 2 were

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Formability, mechanical and corrosive properties of Mg–Nd–Zn–Zr magnesium alloy seamless tubes

Cited by 46 publications

References 15 publications

Enhanced mechanical and corrosion properties of NZ20K alloy by double extrusion and aging processes for biomedical applications

Enhanced mechanical and corrosion properties of NZ20K alloy by double extrusion and aging processes for biomedical applications

The Microstructures and Tensile Properties of As-Extruded Mg–4Sm–xZn–0.5Zr (x = 0, 1, 2, 3, 4 wt %) Alloys

Comprehensive study of phase transformation in age-hardening of Mg–3Nd–0.2Zn by means of scanning transmission electron microscopy

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