Gouging abrasion of wear-resistant alloy white cast irons

Sare, I.R.; Arnold, Bożena

doi:10.1016/0043-1648(89)90243-3

Cited by 40 publications

(10 citation statements)

References 15 publications

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“…Plastic deformation of eutectic carbides was apparent only when the rods and blades of eutectic carbide were aligned at near 90 • to the wear surface [15]. Based upon the observation that thinner carbides appear to bend more before fracture and on the mechanical constraint provided by compressive stresses induced in the near sub-wear surface regions, a model has been developed to explain how such brittle carbides could plastically deform [15,16]. A similar model has been proposed to explain the series of parallel fractures seen in the eutectic carbides in the subwear surface [16].…”

Section: Introductionmentioning

confidence: 98%

“…Features observed were plastic deformation and fracture in the matrix, strain induced martensite formation in austenitic matrix irons, and plastic deformation, fracture, fragmentation, carbide-matrix decohesion and detachment of eutectic carbides. Plastic deformation of eutectic carbides was apparent only when the rods and blades of eutectic carbide were aligned at near 90 • to the wear surface [15]. Based upon the observation that thinner carbides appear to bend more before fracture and on the mechanical constraint provided by compressive stresses induced in the near sub-wear surface regions, a model has been developed to explain how such brittle carbides could plastically deform [15,16].…”

Section: Introductionmentioning

confidence: 99%

“…During studies of wear damage it has been observed that, in the immediate sub-wear surface regions, individual (Fe,Cr) 7 C 3 carbides within the eutectic constituent have the ability to 'bend' within the microstructure when shear stresses are set up within the material during mechanical abrasion [10][11][12][13][14][15]. Studies of the effects of high stress grinding abrasion [12][13][14] and gouging abrasion [15,16] have revealed the complex nature of surface and sub-surface damage. Features observed were plastic deformation and fracture in the matrix, strain induced martensite formation in austenitic matrix irons, and plastic deformation, fracture, fragmentation, carbide-matrix decohesion and detachment of eutectic carbides.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The nature of stacking faults within iron-chromium carbide of the type (Fe,Cr)7C3

Carpenter

Pearce

2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The nature of stacking faults within iron-chromium carbide of the type (Fe,Cr)7C3

Carpenter

Pearce

2010

Journal of Alloys and Compounds

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“…(16,18,22,23) Em particular, altos níveis de deformação plástica da matriz podem ocasionar fraturas subsuperficiais e lascamento dos carbonetos duros e frágeis. (24) A microestrutura das ligas matriz, como já comentado, é típica de martensita revenida e varia de aspecto acicular para ripas, de acordo com o teor de carbono da matriz. (4,29) A Tabela 1 sintetiza os principais parâmetros morfológicos associados com os carbonetos eutéticos.…”

Section: Materiais E Métodosunclassified

Microabrasão De Ligas Ferrosas Multicomponentes

Mello¹

2012

TMM

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ResumoNeste artigo analisa-se, pela técnica de microscopia eletrônica de varredura de alta resolução, o micromecanismo de desgaste predominante na microabrasão de ligas ferrosas multicomponentes Foram produzidas duas famílias de ligas com teores variáveis de vanádio ou molibdênio. Para cada série também foi produzida uma liga isenta de carbonetos. Todas as ligas foram tratadas termicamente de forma a produzir três diferentes níveis de dureza da matriz. Os ensaios foram executados em um microabrasômetro de tipo esfera livre, utilizando partículas finas de SiO 2 como abrasivo. As marcas de desgaste foram analisadas pela técnica microscopia eletrônica de varredura. Adicionalmente, foram analisadas seções transversais produzidas por feixe iônico, focalizado pela técnica microscopia eletrônica de varredura de alta resolução. A presença de carbonetos eutéticos afeta fortemente o comportamento em abrasão de ligas ferrosas multicomponentes. O coeficiente de desgaste não é afetado pela natureza e fração volumétrica de carbonetos nem pela dureza da matriz. O mecanismo de desgaste predominante é o sulcamento paralelo característico do deslizamento das partículas na interface. A remoção preferencial da matriz pelas partículas finas de sílica diminui o suporte mecânico dos carbonetos causando fraturas graduais e arrancamento do carboneto. Palavras-chave: Mecanismos de desgaste; Microabrasão; Ligas ferrosas multicomponentes; FIB. MICROABRASION OF MULTI COMPONENT FERROUS ALLOYS AbstractIn this paper, the effect of microstructural parameters (eutectic carbides and matrix hardness) on the micro abrasive wear of multi-component ferrous alloys abraded by soft, fine abrasive particles is analyzed. Two series of quenched and tempered alloys, with variable vanadium or molybdenum contents and fixed amounts of other elements, were tested. Each series includes an alloy free of carbides (matrix alloy) and alloys containing carbides (carbide rich alloys). Heat treatment produces three different levels of matrix hardness. Free ball micro-abrasion tests were conducted using SiO 2 fine abrasives. The results show that the wear coefficient is not influenced by neither the nature and amount of eutectic carbides nor by the hardness of the matrix. Matrix alloys show a considerably higher micro abrasive wear rate (up to 5 times) than eutectic carbide rich alloys. Special emphasis is given to the wear mechanisms, characterized by Scanning Electron Microscopy and Laser interferometry techniques Analysis of transversal sections produced by using Focused Ion Beam and High Resolution Scanning Electron Microscopy tecniques show that the removal of matrix material due to abrasion with fine silica particles decrease the mechanical supporting of the carbides, which caused gradual fracture and their pull-out.

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“…Basically, most of wear data was produced by two research groups: the US Bureau of Mines (closed in March 1996) in EUA (Blickensderfer et al, 1985;Tylczak et al, 1999;Hawk et al, 1999), and Commonwealth Scientific and Industrial Research Organisation (CSIRO) in Australia (Sare et al, 1980;Sare and Arnold, 1989;Sare and Constantine, 1991;Sare and Arnold, 1995;Sare and Constantine, 1997).…”

Section: Introductionmentioning

confidence: 99%

Revisiting gouging abrasion test for jaw crushers

Pintaúde

Bartalini²

2018

REM, Int. Eng. J.

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The use of a gouging abrasion test to evaluate the wear of jaw crushers is revised in terms of its procedures, considering the effects of the most significant variables, such as the minimum amount of crushed material and the minimum opening between the jaws during the crushing cycle (minimum discharge aperture). A correlation between the work hardening of jaws and the amount of crushed material is presented. The wear of stationary and movable jaws is compared, being the results dependent on the jaw's material and the discharge aperture. The abrasiveness of several rocks was evaluated, showing a good correlation with their Mohs hardness.

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Gouging abrasion of wear-resistant alloy white cast irons

Cited by 40 publications

References 15 publications

The nature of stacking faults within iron-chromium carbide of the type (Fe,Cr)7C3

The nature of stacking faults within iron-chromium carbide of the type (Fe,Cr)7C3

Microabrasão De Ligas Ferrosas Multicomponentes

Revisiting gouging abrasion test for jaw crushers

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