Microstructure and mechanical properties of selective laser melted magnesium

Ng, C.F.; Savalani, M. M.; Lau, Mei-ling; Man, Hau Chung

doi:10.1016/j.apsusc.2011.03.004

Cited by 176 publications

(82 citation statements)

References 30 publications

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“…At laser power 80 W, SLMed AZ61 was dense. As the power further increasing to 90 W, the temperature of the molten pool was significantly increased, leading to prolonged cooling time [17]. As a result, the time for grains growing prolonged, and thus the grains were significantly coarsened ( Figure 3d).…”

Section: Microstructure Characterizationmentioning

confidence: 86%

“…It was revealed that SLMed AZ61 was composed of α-Mg and β-Mg 17 Al 12 . To analyze the XRD patterns accurately, a magnification view of the XRD patterns was shown in Figure 5b.…”

Section: Phase and Dispersionmentioning

confidence: 99%

“…Only a small amount of literature on using SLM to fabricate Mg alloys has been published. Ng et al [17] have studied the single-track formation of pure Mg. They found that the width and height of single track are consistent though the laser energy changes.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure Evolution and Biodegradation Behavior of Laser Rapid Solidified Mg–Al–Zn Alloy

Bin

et al. 2017

Metals

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Abstract:The too fast degradation of magnesium (Mg) alloys is a major impediment hindering their orthopedic application, despite their superior mechanical properties and favorable biocompatibility. In this study, the degradation resistance of AZ61 (Al 6 wt. %, Zn 1 wt. %, remaining Mg) was enhanced by rapid solidification via selective laser melting (SLM). The results indicated that an increase of the laser power was beneficial for enhancing degradation resistance and microhardness due to the increase of relative density and formation of uniformed equiaxed grains. However, too high a laser power led to the increase of mass loss and decrease of microhardness due to coarsened equiaxed grains and a reduced solid solution of Al in the Mg matrix. In addition, immersion tests showed that the apatite increased with the increase of immersion time, which indicated that SLMed AZ61 possessed good bioactivity.

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Section: Microstructure Characterizationmentioning

confidence: 86%

“…It was revealed that SLMed AZ61 was composed of α-Mg and β-Mg 17 Al 12 . To analyze the XRD patterns accurately, a magnification view of the XRD patterns was shown in Figure 5b.…”

Section: Phase and Dispersionmentioning

confidence: 99%

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Microstructure Evolution and Biodegradation Behavior of Laser Rapid Solidified Mg–Al–Zn Alloy

Bin

et al. 2017

Metals

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“…Magnesium synthesised by SLM is closely adapted to a human bone [395]. This technology was employed for producing complex porous/cellular structures of magnesium alloys [350,[396][397][398], although the results of such studies are normally not available in the available literature [254]. A selective laser sintered Mg2Mn alloy is predisposed to use for bone implants [254].…”

Section: Selection Of Materials Of Implantable Devices In Regenerativmentioning

confidence: 99%

Introductory Chapter: Multi-Aspect Bibliographic Analysis of the Synergy of Technical, Biological and Medical Sciences Concerning Materials and Technologies Used for Medical and Dental Implantable Devices

Dobrzański¹

2018

Biomaterials in Regenerative Medicine

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“…Laser melting, as a typical rapid solidification technology, has an extreme high cooling rate, which is above 10 5 K/s [15]. In addition, such a rapid solidification effectively inhibited the grain growth, forming a homogeneous, finer crystalline structure [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of Alloying Treatment and Rapid Solidification on the Degradation Behavior and Mechanical Properties of Mg

Chen

Wang

et al. 2016

Metals

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Magnesium (Mg) has drawn increasing attention as a tissue engineering material. However, there have been very few studies of laser-melted Mg-Zn alloys. In this study, four binary Mg-xZn (x = 2, 4, 6 and 8 wt. %) alloys were fabricated by laser melting. The influence of zinc (Zn) content and technique on the degradation behavior and mechanical properties of Mg were discussed. Results revealed that Mg-xZn alloys consisted of an α-Mg matrix and MgZn phases, which dispersed at the grain boundaries. In addition, the MgZn phase increased with the increase in Zn content. The laser-melted alloy had fine homogenous grains, with an average grain size of approximately 15 µm. Grain growth was effectively inhibited due to the precipitation of the MgZn phase and rapid solidification. Grain refinement consequently slowed down the degradation rate, with Zn content increasing to 6 wt. %. However, a further increase of Zn content accelerated the degradation rate due to the galvanic couple effect between α-Mg and MgZn. Moreover, the mechanical properties were improved due to the grain refinement and reinforcement of the MgZn phase.

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Microstructure and mechanical properties of selective laser melted magnesium

Cited by 176 publications

References 30 publications

Microstructure Evolution and Biodegradation Behavior of Laser Rapid Solidified Mg–Al–Zn Alloy

Microstructure Evolution and Biodegradation Behavior of Laser Rapid Solidified Mg–Al–Zn Alloy

Introductory Chapter: Multi-Aspect Bibliographic Analysis of the Synergy of Technical, Biological and Medical Sciences Concerning Materials and Technologies Used for Medical and Dental Implantable Devices

Influence of Alloying Treatment and Rapid Solidification on the Degradation Behavior and Mechanical Properties of Mg

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