Effect of Coarse-To-Fine WC Grain Ratio on Mechanical Properties and Abrasive Wear of WC-8Co Cemented Carbides

Yung, D.L.; Antonov, M.; Hussainova, I.; Veinthal, R.; Hogmark, S.

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Tytuł artykułu

Effect of Coarse-To-Fine WC Grain Ratio on Mechanical Properties and Abrasive Wear of WC-8Co Cemented Carbides

Autorzy

Yung D.L. , Antonov M. , Hussainova I. , Veinthal R. , Hogmark S.

Treść / Zawartość

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Warianty tytułu

Wpływ udziału węglika WC gruboziarnistego do drobnoziarnistego na właściwości mechaniczne i zużycie ścierne węglików spiekanych WC-8Co

Języki publikacji

Abstrakty

This study performs a comprehensive analysis concerning the amount of fine tungsten carbide (WC) grains needed for the appropriate reinforcement of the cobalt (Co) metallic binder in WC-8Co cemented carbides. The goal is to investigate the balance of coarse-to-fine grain distribution to achieve overall improvement of the material’s mechanical and wear properties. All Samales possessed the same WC-8Co binder content, therefore, allowing the role of grain size distribution to be tested. It was found that a ratio of 8:1 wt% of coarse to ultrafine grain WC yielded an appropriate balance between material hardness, fracture toughness, and rupture strength. Upon adding grain growth inhibitors vanadium carbide (VC) and chromium carbide (Cr3C2), the overall wear resistance is further improved compared to undoped composites when Samales are tested under abrasive wear conditions.

W artykule przedstawiono wyniki badań dotyczących wpływu ilości drobnoziarnistego węglika wolframu na wzmocnienie metalicznego spoiwa kobaltowego (Co) w węgliku spiekanym WC-8Co. Celem badań jest znalezienie optymalnego udziału węglika gruboziarnistego do drobnoziarnistego dla uzyskania poprawy właściwości mechanicznych i charakterystyk zużyciowych. Dla wszystkich próbek zastosowano jednakowy udział spoiwa, by zbadać jedynie wpływ udziału grubo- do drobnoziarnistego węglika w spieku. W wyniku przeprowadzonych badań stwierdzono, że dla proporcji 8:1 udziału węglika grubo- do drobnoziarnistego uzyskuje się najkorzystniejsze cechy użytkowe, tj.: twardość, udarność i odporność na pękanie. Ponadto poprzez dodanie do kompozytu inhibitorów wzrostu, np. węglika wanadu (VC) lub węglika chromu (Cr3C2), zwiększa się odporność na zużycie ścierne w stosunku do kompozytów bez dodatku inhibitorów.

Słowa kluczowe

cemented carbides hard metals grain size manipulation WC-Co

węgliki spiekane sterowanie wielkością ziarna WC-Co

Wydawca

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Czasopismo

Tribologia

Rocznik

2016

Tom

nr 1

Strony

103--115

Opis fizyczny

Bibliogr. 31 poz., rys., wykr., wz.

Twórcy

autor

Yung D.L.

Department of Materials Engineering, Tallinn University of Technology, Tallinn, Estonia

autor

Antonov M.

Department of Materials Engineering, Tallinn University of Technology, Tallinn, Estonia

autor

Hussainova I.

Department of Materials Engineering, Tallinn University of Technology, Tallinn, Estonia

autor

Veinthal R.

Department of Materials Engineering, Tallinn University of Technology, Tallinn, Estonia

autor

Hogmark S.

derliang.yung@ttu.ee

Department of Engineering Sciences, Uppsala University, Uppsala, Sweden

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-348c404f-1e34-47a3-a432-7a6dc6c29849