Mg17Al12 phase refinement and the improved mechanical performance of Mg–6Al alloy with trace erbium addition

Korgiopoulos, K.; Langelier, Brian; Pekguleryuz, Mihriban

doi:10.1016/j.msea.2021.141075

Cited by 30 publications

(13 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the other hand, the β-Mg17Al12 precipitate is the main second phase in Mg-Al alloys, that considerably influence the mechanical properties of the alloys since it increases strength of the material while it reducing ductility. 41 As reported in a previous study, 25 the presence of the intermetallic phase of Mg17Al12 effect directly thrust force. Higher rates of Mg17Al12 intermetallic phase cause higher thrust force generation due to improvement in the mechanical properties.…”

Section: Tensile Test Analysis and Microstructurementioning

confidence: 62%

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Köklü

Koçar

Morkavuk

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

AZ31 magnesium alloy is mainly used in aerospace applications due to its lightweight and good mechanical properties. The installation of AZ31 alloy in an aircraft usually requires machining operations such as drilling and milling for assembly purposes. The current study aims to investigate the effects of different extrusion ratios (1.77, 2.68, 3.55) on the drilling machinability of AZ31 alloys. The machinability was evaluated with thrust force, borehole surface quality, and chip characteristics. It was found that the thrust force and hole quality depend on the extrusion ratio and cutting parameters. The highest thrust force and surface roughness Ra occurred when drilling AZ31 alloy produced using the highest extrusion ratio of 3.55 in agreement with the improvement in the mechanical properties. The chip length decreased with the increase of the extrusion ratio depending on a decrease in the ductility, while SEM images showed that the AZ31 sample produced using intermediate extrusion ratio had the best hole edge quality and least burr formation.

show abstract

Section: Tensile Test Analysis and Microstructurementioning

confidence: 62%

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Köklü

Koçar

Morkavuk

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

show abstract

“…İlk olarak yapıda koyu kontrastta bulunan α-Mg yapısı matris faz olarak bilinmektedir. Çalışmamız bu fazın durumu ile ilgili tutarlılık göstermiştir [8,[16][17][18].…”

Section: Tartışma Ve Sonuçunclassified

Döküm Mg+%15Al12Si alaşımının mikroyapı ve sertlik incelemesi

Çiçek

SUN

2021

Nevşehir Bilim Ve Teknoloji Dergisi

View full text Add to dashboard Cite

Bu çalışmada Mg metaline Al ve Si elementlerinin ilavesi ile bir döküm yapılmıştır. Döküm sırasında atmosfer kontrollü bir döküm fırını kullanılmıştır. Alaşımda saf Mg metaline ilave olarak ağırlıkça %15 Al12Si ingot alaşımı kullanılmıştır. Elde edilen alaşım homojenleştirme sonrası numune haline getirilmiştir. Mg-Al-Si üçlü alaşımı şeklinde hazırlanan alaşım döküm sonrası klasik metalografik yöntemlerle hazırlanmış ve SEM ile mikroyapı incelemesi yapılmıştır. Ek olarak alaşıma elementel analiz uygulanmıştır. Temel mekanik değerler için alaşım Vickers tipinde sertlik testi ölçümüne alınmıştır. Alaşım mikro yapısında oluşan intermetalik fazların dağılımı ve yapıları incelenmiştir. Sonuç olarak standart (AS serisi) bir Mg alaşımı elde edilmiş ve temel özellikleri rapor edilmiştir.

show abstract

“…The addition of Al to Mg forms the β-Mg 17 Al 12 phase, which increases mechanical properties [10], but too much of it reduces the mechanical strength at high temperatures due to its high melting point [11,12]. Adding zinc improves mechanical properties and ductility while refining the microstructure [13,14].…”

Section: Introductionmentioning

confidence: 99%

Microstructural and Mechanical Behavior Investigations of Nb-Reinforced Mg–Sn–Al–Zn–Mn Matrix Magnesium Composites

Erçetin

Özgün

Aslantaş

et al. 2023

Metals

View full text Add to dashboard Cite

This research focuses on the fabrication and characterization of TAZ532-xNb composites, employing high-purity, micron-sized powders of Mg, Sn, Al, Zn, Mn, and Nb as the raw materials. These powders were subjected to a paraffin coating process aimed at mitigating oxidation. The formation of composites was achieved via hot pressing and was followed by surface preparation and analysis using scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS). An X-ray diffraction (XRD) study was conducted to identify the microstructural phases. Quantitative assessments including the theoretical density, actual density, and relative density were computed, and their fluctuations in relation to the increasing Nb reinforcement ratio were scrutinized. Furthermore, the mechanical attributes of the composites, such as hardness and tensile strength, were assessed via experimental procedures. The absence of oxygen-related peaks in the XRD patterns endorsed the successful execution of the paraffin coating technique and protective gas atmosphere during sintering. The detection of α-Mg, Mg2Sn, MgZn, Mg17Al12, and Nb phases within the Nb-reinforced composite patterns authenticated the formation of the intended phases. Notably, the relative density values of the composites surpassed 95%, indicating efficient sintering. SEM results disclosed a densely packed microstructure, with Nb reinforcement particles evenly distributed along the grain boundaries, devoid of particle clustering or significant grain growth. These composites manifested exceptional wetting characteristics, which can be attributed to the employment of Mg alloy as the matrix material. EDS data confirmed the proportions of Nb within the composites, aligning with the quantities incorporated during fabrication. The composites showcased an increase in microhardness values with the escalating Nb reinforcement ratio, credited to the harder constitution of Nb particles in comparison to the matrix alloy. Concurrently, tensile strength showed a significant improvement with the increment in Nb reinforcement, while elongation values peaked at a specific Nb reinforcement level. The positive evolution of tensile strength properties was ascribed to the escalated Nb reinforcement ratio, grain size, and consequent higher sample densities.

show abstract

Mg17Al12 phase refinement and the improved mechanical performance of Mg–6Al alloy with trace erbium addition

Cited by 30 publications

References 34 publications

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Influence of extrusion parameters on drilling machinability of AZ31 magnesium alloy

Döküm Mg+%15Al12Si alaşımının mikroyapı ve sertlik incelemesi

Microstructural and Mechanical Behavior Investigations of Nb-Reinforced Mg–Sn–Al–Zn–Mn Matrix Magnesium Composites

Contact Info

Product

Resources

About