Tensile fracture of as-cast and hot rolled Mg-Zn-Y alloy with long-period stacking phase

Wang, Baishu; Xiong, Shengwu; Liu, Yongbing

doi:10.1016/s1003-6326(10)60524-9

Cited by 13 publications

(7 citation statements)

References 16 publications

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“…Similar fracture features are also reported for as-cast Mg-Zn-Y alloys [30]. It is well known that the presence of large-size particles (especially particle size, d ≥ 10 µm) is more likely to reduce the ductility [31].…”

Section: Mechanical Propertiessupporting

confidence: 80%

Mechanical Properties and Corrosion Behavior of WZ73 Mg Alloy/SiCp Composite Fabricated by Stir Casting Method

Chiu

Liu

2018

Metals

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Low strength, which limits the industrial applications of Mg alloys, can be improved by forming Mg-based metal matrix composites (MMC) reinforced with ceramic particles. In this study, a Mg-based MMC was synthesized by introducing SiC particles into a WZ73 Mg alloy using the stir casting method. The effects of the SiC particles on the mechanical properties and corrosion behavior of WZ73 alloys were studied. The results showed that an addition of 1.5 vol % of SiC enhanced the strength of a WZ73 alloy but reduced the corrosion resistance. A further increase of SiC to 2.5 vol % had no effects on strength and corrosion behavior, which was attributed to the agglomeration of SiC particles. A microstructural analysis indicated that the addition of SiC did not alter the morphology and distribution of the secondary phase in the WZ73 alloy. Thus, the improved strength was attributed to the reinforcement of SiC and the refinement of the Mg grain, while the degraded corrosion resistance was the result of the grain refinement of Mg and the presence of the Mg/SiC interface in the vicinity of the secondary phase, which breaks the continuity of the Mg matrix and results in a higher corrosion rate.

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Section: Mechanical Propertiessupporting

confidence: 80%

Mechanical Properties and Corrosion Behavior of WZ73 Mg Alloy/SiCp Composite Fabricated by Stir Casting Method

Chiu

Liu

2018

Metals

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“…The similarity of the fracture morphology between the MgZnY-C and HA-C alloys agrees well with the results that no significant changes in YS and UTS between the MgZnY-C and HA-C alloys are observed. Similar fracture features are also reported for as-cast Mg-Zn-Y alloys [ 32 ]. The fracture morphologies of the MgZnY-T and HA-T alloys show mainly cleavage planes and tearing ridges ( Figure 6 c,d).…”

Section: Resultssupporting

confidence: 84%

Effect of Hydroxyapatite on the Mechanical Properties and Corrosion Behavior of Mg-Zn-Y Alloy

Chiu

Chen

et al. 2017

Materials

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Mg-Zn-Y alloys with a long period stacking ordered (LPSO) phase are potential candidates for biodegradable implants; however, an unfavorable degradation rate has limited their applications. Hydroxyapatite (HA) has been shown to enhance the corrosion resistance of Mg alloys. In this study, Mg97Zn1Y2-0.5 wt% HA composite was synthesized and solution treated at 500 °C for 10 h. The corrosion behavior of the composite was studied by electrochemical and immersion tests, while the mechanical properties were investigated by a tensile test. Addition of HA particles improves the corrosion resistance of Mg97Zn1Y2 alloy without sacrificing tensile strength. The improved corrosion resistance is due to the formation of a compact Ca-P surface layer and a decrease of the volume fraction of the LPSO phase, both resulting from the addition of HA. After solution-treatment, the corrosion resistance of the composite decreases. This is due to the formation of a more extended LPSO phase, which weakens its role as a corrosion barrier in protecting the Mg matrix.

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“…1b) or several Mg-Zn-RE alloys (Fig. 1c), the LPSO structures have a similar occurrence, mostly showing a lamellar or plate-like shape and being located along the grain boundaries of the α-Mg matrix [3,[5][6][7]. Fig.…”

Section: Introductionmentioning

confidence: 77%

Mechanical Properties and Microstructure of the Magnesium Alloy Mg-6.8Y-2.5Zn-0.5Al Produced by Casting and Hot Rolling

Neh

Ullmann

Kawalla

2018

MSF

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In recent years, magnesium alloys have been received much attention as important structural materials for lightweight components in automotive, electronic and space industries because of the low density, high specific strength, high damping capacities and good casting properties. Among various magnesium alloys, rare earth (RE) containing alloys are known to show high strength, excellent creep resistance, and good thermal stability. Long period stacking ordered structures (LPSO) being responsible for the improved property profile in some Mg–RE alloys. One promising system are the Mg-Y-Zn alloys, which are predominantly processed via extrusion. Only a few studies are focused on hot rolling. However, these works are confined to rolling temperatures between 350 °C and 420 °C. The present paper summarizes the development of a rolling technique including pass schedule and heat treatment for the magnesium alloy Mg-6.8Y-2.5Zn-0.5Al in as-cast condition in order to produce sheets with a final thickness of 2.5 mm. The investigations are accompanied by the characterization of the microstructure as well as the determination of the mechanical properties.

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Tensile fracture of as-cast and hot rolled Mg-Zn-Y alloy with long-period stacking phase

Cited by 13 publications

References 16 publications

Mechanical Properties and Corrosion Behavior of WZ73 Mg Alloy/SiCp Composite Fabricated by Stir Casting Method

Mechanical Properties and Corrosion Behavior of WZ73 Mg Alloy/SiCp Composite Fabricated by Stir Casting Method

Effect of Hydroxyapatite on the Mechanical Properties and Corrosion Behavior of Mg-Zn-Y Alloy

Mechanical Properties and Microstructure of the Magnesium Alloy Mg-6.8Y-2.5Zn-0.5Al Produced by Casting and Hot Rolling

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