The microstructure, tensile properties, and creep behavior of Mg–Zn alloys containing 0–4.4wt.% Zn

Boehlert, C. J.; Knittel, Kenneth L.

doi:10.1016/j.msea.2005.11.006

Cited by 136 publications

(57 citation statements)

References 12 publications

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“…It furthermore assists to eliminate the harmful effect of impurities such as iron and nickel, thus improving the corrosion resistance of magnesium alloys [6]. Also, 4wt% Zn which was chosen in this work was reported to be the optimum Zn content for tensile and mechanical strengthening over the range of alloying [7].…”

Section: Introductionmentioning

confidence: 95%

Effect of Adding Sb on Microstructure, Mechanical Properties and in <i>Vitro</i> Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application

Mohamed¹,

Moussa²,

Waly³

et al. 2017

JSEMAT

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Magnesium (Mg) and its alloys are one of a novel kind of biodegradable metallic implants which attracted much fundamental research to develop its clinical application. Nevertheless, it has more restrictions in biomedical applications because it degrades too fast at the early stage after implantation, thus commonly leading to some problems such as early fast mechanical loss, hydric bubble aggregation, gap formation between the implants and the tissue. This work aims to study the effect of 0.5 wt% Sb addition on the microstructure, mechanical properties and degradation behavior of as cast Mg-4wt% Zn alloy. The evaluation process was conducted using optical and scanning electron microscopy, X-ray diffraction, tensile and compression tests, in addition to a corrosion study by immersing in simulated body fluid (SBF). Results showed that Sb refines the grain size of the base alloy and also enhances its mechanical properties and degradation rate as well. These were due to the formation of the secondary phase of Mg 3 Sb 2 . To get better degradation rate, the Mg-4wt% Zn and Mg-4wt% Zn-0.5wt% Sb alloys are coated with Ca-P using autocatalytic technique. The results demonstrated that the formed coat layer improves the degradation rate of samples under the condition of this study. The current study shows that Mg-4wt% Zn-0.5wt% Sb alloy has good mechanical properties and when it coated by Ca-P, it gave a better corrosion resistance that makes it ideal for biodegradable medical application.

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Section: Introductionmentioning

confidence: 95%

Effect of Adding Sb on Microstructure, Mechanical Properties and in <i>Vitro</i> Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application

Mohamed¹,

Moussa²,

Waly³

et al. 2017

JSEMAT

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“…4, the n was independent of temperature, and its value was 4.5 implying that dislocation creep was the rate-controlling mechanism. [31,32] An n value of approximately 5 is commonly observed for Mg and Mg alloys, such as pure Mg, [37,39] Mg-Al-based alloys, [38,[40][41][42] Mg-Zn-based alloys, [43,44] Mg-Sm-based alloys [45][46][47] and Mg-Y-based alloys [6,48,49] . The measured Q avg value of 221±20kJ/mol was much higher than the activation energy for lattice self-diffusion, Q sd , of Mg (135kJ/mol).…”

Section: Creep Deformation Mechanismsmentioning

confidence: 99%

Creep and Fracture Behavior of Peak-Aged Mg-11Y-5Gd-2Zn-0.5Zr (wt pct)

Yin

Wang

Boehlert

et al. 2012

Metall Mater Trans A

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The tensile-creep and creep-rupture behavior of heat-resistant peak-aged Mg-11Y-5Gd-2Zn-0.5Zr (wt.%) (WGZ1152) was investigated at T=523-598K (0.58-0.66T m ) and stresses between 30MPa to 140MPa. The minimum creep rate of the alloy was almost two orders of magnitude lower than that for WE54-T6, and was comparable to that for HZ32-T5. The creep behavior exhibited an extended tertiary creep stage, which was believed to be associated with precipitate coarsening. The creep stress exponent value was 4.5, suggesting that dislocation creep was the rate-controlling mechanism. The activation energy for creep (221±20kJ/mol) was higher than that for self-diffusion in magnesium, and was believed to be associated with the activation of non-basal slip and cross slip. This was consistent with the surface deformation observations, which revealed a transition from basal slip to non-basal slip and cross slip with increasing temperature. The minimum creep rate and rupture time followed the original and modified Monkman-Grant relationships. The microcracks and cavities preferentially nucleated at grain boundaries and at the interface between Mg matrix and the second phase. In-situ creep experiments highlighted the intergranular cracking evolution.

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“…Besides, the addition of zinc leads to enhancement of corrosion resistance. Previous studies [16][17][18][19] showed that optimum amount of zinc with appropriate mechanical and corrosion properties is about 4 wt.%. In addition, zinc and calcium can be well metabolized by human body [14], which makes them more attractive for their using as effective alloying element of magnesium.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of as-cast and extruded Mg-4Zn and Mg-4Zn-0.4Ca alloys

HRADILOVA¹,

VOJTĚCH²

2021

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This work studied the effect of extrusion and alloying with 4 wt.% of Zn and 0.4 wt.% of Ca on the structure and mechanical properties of magnesium. Light, scanning electron microscopy, X-ray diffraction, hardness, compressive and tensile tests were used for this purpose. The addition of zinc led to the formation of MgZn and further alloying with calcium changed the nature of the secondary phase to Ca2Mg6Zn3. The process of extrusion resulted in significant structural refinement, which was the most pronounced for the Mg-4Zn-0.4Ca alloy. In this alloy the average grain size was 6 µm. The extrusion improved all the measured characteristics and the most pronounced improvement was observed in the case of tensile yield strength. The presence of calcium improved the positive effect of zinc on the mechanical properties of magnesium. Differences in the mechanical behaviour of magnesium and its alloys were discussed in relation to structural variations resulting in different strengthening effects.K e y w o r d s : magnesium alloys, microstructure, extrusion, mechanical properties

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The microstructure, tensile properties, and creep behavior of Mg–Zn alloys containing 0–4.4wt.% Zn

Cited by 136 publications

References 12 publications

Effect of Adding Sb on Microstructure, Mechanical Properties and in <i>Vitro</i> Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application

Effect of Adding Sb on Microstructure, Mechanical Properties and in <i>Vitro</i> Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application

Creep and Fracture Behavior of Peak-Aged Mg-11Y-5Gd-2Zn-0.5Zr (wt pct)

Mechanical properties of as-cast and extruded Mg-4Zn and Mg-4Zn-0.4Ca alloys

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The microstructure, tensile properties, and creep behavior of Mg–Zn alloys containing 0–4.4wt.% Zn

Cited by 136 publications

References 12 publications

Effect of Adding Sb on Microstructure, Mechanical Properties and in &lt;i&gt;Vitro&lt;/i&gt; Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application

Effect of Adding Sb on Microstructure, Mechanical Properties and in &lt;i&gt;Vitro&lt;/i&gt; Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application

Creep and Fracture Behavior of Peak-Aged Mg-11Y-5Gd-2Zn-0.5Zr (wt pct)

Mechanical properties of as-cast and extruded Mg-4Zn and Mg-4Zn-0.4Ca alloys

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Product

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Effect of Adding Sb on Microstructure, Mechanical Properties and in <i>Vitro</i> Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application

Effect of Adding Sb on Microstructure, Mechanical Properties and in <i>Vitro</i> Degradation Behavior of as Cast Mg-4wt% Zn Alloy for Medical Application