Failure mechanism of cemented tungsten carbide dies in wet drawing process of steel cord filament

Lu, Rudy; Minarro, Lluis; Su, Yea-Yang; Shemenski, R. M.

doi:10.1016/j.ijrmhm.2008.01.009

Cited by 34 publications

(20 citation statements)

References 12 publications

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“…It results from their two-phase interpenetrated network as well as the intrinsic properties of the ceramic particles and the metallic binder [1][2][3][4][5]. Many of the referred applications often imply exposure of cemented carbides tools and components to chemically aggressive media including a large variety of corrosive environments, such as lubricants, chemical and petrochemical products, as well as mine-and sea-water (e.g., References [6][7][8][9]).…”

Section: Introductionmentioning

confidence: 99%

Corrosion-Induced Damage and Residual Strength of WC-Co,Ni Cemented Carbides: Influence of Microstructure and Corrosion Medium

Zheng

Fargas

Armelín

et al. 2019

Metals

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The corrosion behavior of cemented carbides with binders of different chemical nature (Co and Ni) and carbides with distinct mean grain size (ultrafine and coarse) was studied. The investigation also included corrosion media (acidic and neutral solutions containing chlorides and an alkaline solution) as experimental variables. Immersion tests were performed to induce corrosion damage in a controlled way. Electrochemical parameters were measured together with a detailed inspection of the corroded surfaces. Microstructural influence on the tolerance to corrosion damage was evaluated in terms of residual strength. Results pointed out that corrosion rates were lower in the alkaline solution. In contrast, acidic media led to higher corrosion rates, especially for cemented carbides with Co regardless the influence of carbide mean grain size. Corrosion damage resulted in strength degradation due to the formation of surface corrosion pits in acidic solution. In neutral and alkaline solutions, much less pronounced effects were determined. Focused Ion Beam (FIB)/ Field Emission Scanning Electron Microscopy (FESEM) results revealed differences in corrosion-induced damage scenario. In acidic solution, corrosion starts at binder pool centers and evolves towards binder/WC interfaces. Meanwhile, corrosion in alkaline solution is initially located at binder/WC interfaces, and subsequently expands into the ceramic particles, developing a microcrack network inside this phase.

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Section: Introductionmentioning

confidence: 99%

Corrosion-Induced Damage and Residual Strength of WC-Co,Ni Cemented Carbides: Influence of Microstructure and Corrosion Medium

Zheng

Fargas

Armelín

et al. 2019

Metals

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“…Alloying elements such as Co, Fe and Ni would improve the mechanical properties by reducing the brittle nature. Corrosion of cemented carbides (WC/Co) proceeds through selective binder dissolution at acidic condition, whereas the WC phase is not much affected by the corrosion attack in acidic medium, WC phase shows the active dissolution in alkaline medium, and may induce a detrimental effect on other critical performance [8][9][10][11][12][13]. Throughout mining, the tungsten carbide components are exposed to severe mechanical, chemical and thermal interaction.…”

Section: Introductionmentioning

confidence: 99%

Modes of failure of cemented tungsten carbide tool bits (WC/Co): A study of wear parts

Katiyar

Singh

et al. 2016

International Journal of Refractory Metals and Hard Materials

122

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“…Refs. [7][8][9][10]). Therefore, it is of crucial importance to improve the corrosion resistance of cemented carbides in order to increase their service life and to prevent ⁎ ⁎ Corresponding author at: Sandvik Mining and Rock Technology AB, Västberga, Stockholm 126 79, Sweden.…”

Section: Introductionmentioning

confidence: 99%

Microstructural influence on tolerance to corrosion-induced damage in hardmetals

et al. 2016

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The influence of the microstructure on the tolerance of WC-Co cemented carbides to corrosion damage was studied by using residual strength as the critical design parameter. In doing so, samples were immersed in synthetic mine water solution for different times, and changes induced by corrosion exposure were assessed. A detailed 3D FIB/FESEM tomography characterization of corrosion damage-microstructure interactions is included. Results reveal that corrosion damage may result in relevant strength degradation on the basis of stress rising effects associated with the formation of surface corrosion pits. Thus, as immersion time increases strength gradually decreases. Fractographic examination reveals the formation of semi-elliptical and sharp corrosion pits for studied medium-and ultrafine-sized cemented carbides, respectively. The latter has a much more pronounced stress rising effect, and consequently higher strength losses were determined for ultrafine grades. Corrosion process consists of a selective attack of the binder that is dissolved in the corrosive media. Initially, it is located at centres of binder pools and as exposure time in the media increases, corrosion evolves consuming the rest of the pools which finally leaves an unsupported WC grain skeleton at the surface.

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Failure mechanism of cemented tungsten carbide dies in wet drawing process of steel cord filament

Cited by 34 publications

References 12 publications

Corrosion-Induced Damage and Residual Strength of WC-Co,Ni Cemented Carbides: Influence of Microstructure and Corrosion Medium

Corrosion-Induced Damage and Residual Strength of WC-Co,Ni Cemented Carbides: Influence of Microstructure and Corrosion Medium

Modes of failure of cemented tungsten carbide tool bits (WC/Co): A study of wear parts

Microstructural influence on tolerance to corrosion-induced damage in hardmetals

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