Microstructures, Mechanical and Corrosion Properties of the Extruded AZ31-xCaO Alloys

Lü, Yalin; Zhang, Yang; Cong, Mengqi; Li, Xingcheng; Xu, Wenting; Song, Leipeng

doi:10.3390/ma11081467

Cited by 10 publications

(3 citation statements)

References 25 publications

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“…The possibilities to modify the manufacturing process in the SLM technique has created the possibility to conduct scientific research at many scientific and industry facilities [10,11,12,13,14,15,16,17,18,19]. One of the most common topics is the analysis of the process parameters which influence on the mechanical properties of manufactured elements [20,21,22,23,24,25,26,27,28,29,30]. In this paper, the influence of manufacturing process parameters on the porosity and microhardness of the additive manufactured elements was determined.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Exposure Energy Density on Porosity and Microhardness of the SLM Additive Manufactured Elements

et al. 2018

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Selective laser melting (SLM) is an additive manufacturing technique. It allows elements with very complex geometry to be produced using metallic powders. A geometry of manufacturing elements is based only on 3D computer-aided design (CAD) data. The metal powder is melted selectively layer by layer using an ytterbium laser. This paper contains the results of porosity and microhardness analysis made on specimens manufactured during a specially prepared process. Final analysis helped to discover connections between changing hatching distance, exposure speed and porosity. There were no significant differences in microhardness and porosity measurement results in the planes perpendicular and parallel to the machine building platform surface.

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Section: Introductionmentioning

confidence: 99%

The Influence of Exposure Energy Density on Porosity and Microhardness of the SLM Additive Manufactured Elements

et al. 2018

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“…The grain refinement plays the key role in enhancing the strength, which can be described with the Hall-Patch formula. 5,6 According to the previous references, the majority of FSPed Mg alloys show a moderate increase in the strength, while a fraction of them exhibit diametrically opposite results. 7,8 Besides the grain size, the texture was also found to have a significant influence on the comprehensive performance of wrought magnesium alloys.…”

Section: Introductionmentioning

confidence: 83%

Microstructure, texture and mechanical properties of a friction-stir-processed Mg-Al-Ca-Mn-Zn alloy

Lili¹,

Zhang²,

Lu³

et al. 2019

Mater. Tehnol.

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Microstructure, texture and mechanical properties of a friction-stir-processed (FSPed) Mg-1Al-0.3Ca-0.3Mn-0.6Zn (w/%) alloy were investigated in the present work. During FSP, complete dynamic recrystallization (DRX) takes place in the coarse primary a-Mg matrix and a considerable grain refinement is achieved. Furthermore, DRXed grain sizes increase with an increase of the rotation speed from 1000 min-1 to 1600 min-1 , which is attributed to the integrated effect of the strain rate and thermal input. After FSP, a strong {0001} basal texture is formed, with the intensity ranging from 83.64 to 105.19. Compared to the base metal, the elongation is significantly enhanced, by »158 %, while the ultimate tensile strength and yield strength are reduced. The variation in the mechanical properties is mainly due to the grain refinement and strong {0001} basal texture obtained with FSP.

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“…The AZ31 Mg alloy consists of Al (2.5-3.5%), Zn (0.6-1.4%), Mn (0.2-1.0%), and balance Mg [12]. Al and Zn enhance and accelerate the hardening, while Mn increases the corrosion resistance [2].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cu2+ Ions on the Corrosion Resistance of AZ31 Magnesium Alloy with Microarc Oxidation

Ahmed

Zhang

et al. 2020

Materials

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The objectives of this study were to reduce the corrosion rate and increase the cytocompatibility of AZ31 Mg alloy. Two coatings were considered. One coating contained MgO (MAO/AZ31). The other coating contained Cu2+ (Cu/MAO/AZ31), and it was produced on the AZ31 Mg alloy via microarc oxidation (MAO). Coating characterization was conducted using a set of methods, including scanning electron microscopy, energy-dispersive spectrometry, X-ray photoelectron spectroscopy, and X-ray diffraction. Corrosion properties were investigated through an electrochemical test, and a H2 evolution measurement. The AZ31 Mg alloy with the Cu2+-containing coating showed an improved and more stable corrosion resistance compared with the MgO-containing coating and AZ31 Mg alloy specimen. Cell morphology observation and cytotoxicity test via Cell Counting Kit-8 assay showed that the Cu2+-containing coating enhanced the proliferation of L-929 cells and did not induce a toxic effect, thus resulting in excellent cytocompatibility and biological activity. In summary, adding Cu ions to MAO coating improved the corrosion resistance and cytocompatibility of the coating.

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Microstructures, Mechanical and Corrosion Properties of the Extruded AZ31-xCaO Alloys

Cited by 10 publications

References 25 publications

The Influence of Exposure Energy Density on Porosity and Microhardness of the SLM Additive Manufactured Elements

The Influence of Exposure Energy Density on Porosity and Microhardness of the SLM Additive Manufactured Elements

Microstructure, texture and mechanical properties of a friction-stir-processed Mg-Al-Ca-Mn-Zn alloy

Influence of Cu2+ Ions on the Corrosion Resistance of AZ31 Magnesium Alloy with Microarc Oxidation

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