Microstructure and mechanical properties of a novel TiNi particulate reinforced AZ91 metal matrix composite

Kelen, Fevzi; Gavgalı, Mehmet; Aydoğmuş, Tarık

doi:10.1016/j.matlet.2018.08.121

Cited by 26 publications

(7 citation statements)

References 5 publications

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“…Hardness and compressive yield strength of AZ91-based metal matrix composites prepared by the powder metallurgy route in the current work and from the literature are shown in Figure 9 [ 35 , 36 , 37 , 38 , 39 , 40 ]. It can be seen that the hardness and strength of AZ91–HEA composite synthesized in the current work was superior to those in the AZ91-based composites reinforced with oxide, nitride and boride.…”

Section: Discussionmentioning

confidence: 99%

Al0.5CoCrFeNi2 High Entropy Alloy Particle Reinforced AZ91 Magnesium Alloy-Based Composite Processed by Spark Plasma Sintering

Chiu

Chang

2021

Materials

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In this study, AZ91 magnesium-alloy-based metal matrix composites (MMCs) reinforced with 10 wt% of Al0.5CoCrFeNi2 high-entropy alloy (HEA) particles and SiC particles were prepared by a spark plasma sintering (SPS) process at 300 °C. The effects of reinforcements on the microstructure and mechanical properties of AZ91-based MMCs were studied. The results showed that AZ91–HEA composite consisted of α-Mg, Mg17Al12 and FCC phases. No interfacial reaction layer was observed between HEA particles and the Mg matrix. After adding HEA into AZ91, the compressive yield strength (C.Y.S) of the AZ91–HEA composite increased by 17% without degradation of failure strain. In addition, the increment in C.Y.S brought by HEA was comparable to that contributed by commonly used SiC reinforcement (15%). A relatively low porosity in the composite and enhanced interfacial bonding between the α-Mg matrix and HEA particles make HEA a potential reinforcement material in MMCs.

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Section: Discussionmentioning

confidence: 99%

Al0.5CoCrFeNi2 High Entropy Alloy Particle Reinforced AZ91 Magnesium Alloy-Based Composite Processed by Spark Plasma Sintering

Chiu

Chang

2021

Materials

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“…Fakat aynı grafikte takviye fazı TiNi oranındaki artış ile korozyon akım yoğunluğunun da arttığı görülmektedir. Her ne kadar takviye elemanı oranındaki artış ile mekanik özelliklerde artış sağlansa da [15][16]23]; TiNi'in varlığı hem korozyon akım yoğunluğunun hem de korozyon potansiyelinin artmasına neden olmaktadır. Dolayısıyla her oranda TiNi ilavesi matris malzemesinin korozyon direncini azaltmış, korozyon hızını da artırmıştır (Şekil 2 ve Tablo 1).…”

Section: Bulgular Ve Tartışmaunclassified

Toz Metalürjisi Yöntemi İle Üretilmiş Magnezyum Matrisli Kompozitlerin Korozyon Duyarlılıkları

Kelen

Aydoğmuş

Gavgalı

et al. 2019

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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Öz Bu çalışmada, hacimce %5-25 oranında TiNi mikro partikül içeren magnezyum matrisli kompozitlerin korozyon davranışları %3,5 NaCl çözeltisi içerisinde potansiyodinamik polarizasyon (PDS) testleri ile belirlenmiştir. Korozyon potansiyeli (Ecor) ve korozyon akım yoğunluğu (ίcorr) değerleri Tafel ekstrapolasyonu yöntemi ile saptanmıştır. İçyapıdaki değişimler ve elektrokimyasal sonuçlar birbirini desteklemektedir. Kompozit malzemelerde artan takviye oranı ile birlikte hem korozyon potansiyeli hem de korozyon akım yoğunluğu değerlerinin artığı gözlenmiştir. Korozyon testlerinden sonra gerçekleştirilen morfolojik incelemelerde yüzeyde çukurcukların yanı sıra kurtçuklar da tespit edilmiştir.

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“…However, it is not used in the pure form owing to its weak mechanical properties and poor resistance against wear and tear. To improve the wear resistance, corrosion resistance and mechanical strength, AZ91D magnesium alloy is reinforced with carbide particles (Sun et al , 2020; Zhang et al , 2020), metal oxide particles (Yang et al , 2020; Kelen et al , 2018), carbon nanotubes (Li et al , 2020; Zhang et al , 2017) and graphite (Chen et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of AZ91D magnesium alloy composite: effect of hybrid WC – SiO₂ nanoparticles

Fahad

Bavanish

2021

ILT

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Purpose Aviation field requires a material with greater tribological characteristics to withstand the critical climate conditions. Hence, it is of paramount importance to enhance the wear resistance of material. AZ91D magnesium alloy is a light weight material used in the aviation field for the construction work. The purpose of this study is to augment the wear properties of AZ91D alloy by reinforcing with hard particles such as tungsten carbide (WC) and silicon dioxide (SiO2). Design/methodology/approach In this work, three types of composites were fabricated, namely, AZ91D – WC, AZ91D – SiO2 and AZ91D – (WC + SiO2) by ball milling method, and the tribological properties were analyzed using pin-on-disc apparatus. Findings Results showed that the hardness of AZ91D alloy was greatly improved due to the reinforcing effects of WC and SiO2 particles. Wear study showed that wear rate of AZ91D alloy and its composites increased with the increase of applied load due to ploughing effect and decreased with the increase of sliding speed owing to the formation of lubricating tribolayer. Further, the AZ91D – (WC + SiO2) composite exhibited the lower wear rate of 0.0017 mm3/m and minimum coefficient of friction of 0.33 at a load of 10 N and a sliding speed of 150 mm/s due to the inclusion of hybrid WC and SiO2 particles. Hence, the proposed AZ91D – (WC + SiO2) composite could be a suitable candidate to be used in the aviation applications. Originality/value This work is original which deals with the effect of hybrid particles, i.e. WC and SiO2 on the wear performance of the AZ91D magnesium alloy composites. The literature review showed that none of the studies focused on the reinforcement of AZ91D alloy by the combination of carbide and metal oxide particles as used in this investigation.

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Microstructure and mechanical properties of a novel TiNi particulate reinforced AZ91 metal matrix composite

Cited by 26 publications

References 5 publications

Al0.5CoCrFeNi2 High Entropy Alloy Particle Reinforced AZ91 Magnesium Alloy-Based Composite Processed by Spark Plasma Sintering

Al0.5CoCrFeNi2 High Entropy Alloy Particle Reinforced AZ91 Magnesium Alloy-Based Composite Processed by Spark Plasma Sintering

Toz Metalürjisi Yöntemi İle Üretilmiş Magnezyum Matrisli Kompozitlerin Korozyon Duyarlılıkları

Tribological behavior of AZ91D magnesium alloy composite: effect of hybrid WC – SiO₂ nanoparticles

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Microstructure and mechanical properties of a novel TiNi particulate reinforced AZ91 metal matrix composite

Cited by 26 publications

References 5 publications

Al0.5CoCrFeNi2 High Entropy Alloy Particle Reinforced AZ91 Magnesium Alloy-Based Composite Processed by Spark Plasma Sintering

Al0.5CoCrFeNi2 High Entropy Alloy Particle Reinforced AZ91 Magnesium Alloy-Based Composite Processed by Spark Plasma Sintering

Toz Metalürjisi Yöntemi İle Üretilmiş Magnezyum Matrisli Kompozitlerin Korozyon Duyarlılıkları

Tribological behavior of AZ91D magnesium alloy composite: effect of hybrid WC – SiO2 nanoparticles

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Tribological behavior of AZ91D magnesium alloy composite: effect of hybrid WC – SiO₂ nanoparticles