Effect of rapid solidification on sliding wear of iron castings

Orłowicz, A. W.; Trytek, A.

doi:10.1016/s0043-1648(02)00301-0

Cited by 21 publications

(20 citation statements)

References 15 publications

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“…In frictional wear conditions the mechanism of a frictional wear of iron casting is strongly affected by shape, size, arrangement of graphite precipitates. 3 In the case of ordinary casting with a relatively coarse graphite (,60 mm grain size), a large microcrack is observed through the graphite (Fig. 13a).…”

Section: Wear Behaviour At Higher Loadingmentioning

confidence: 98%

“…2 As the demand for high performance and durability of equipment and machines has recently been soared, strenuous effort have been made to improve the wear resistance of cast iron. 3 Some of these efforts include the changing of chemical compositions which strongly affects the mechanical properties and wear rate. 4,5 However, in many cases , the addition of alloying elements leads to chill (carbides), increment in section sensitivity and decrement in damping capacity.…”

Section: Introductionmentioning

confidence: 99%

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Wear resistance and damping capacity of semisolid processed hypoeutectic grey cast iron

Ramadan¹,

Nomura²,

Takita³

2008

Materials Science and Technology

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The wear resistance and damping capacity of hypoeutectic grey cast iron (carbon equivalent 53?59%) were investigated as a function of the relative amount of primary fraction of solid. In the present study the authors have used a cooling plate to produce semisolid iron slurry. Sand mould castings with 14 mm strip thickness were used in the present study. For comparison, damping capacity was also carried out on ordinary ductile iron specimen made from Y block with 15 mm thickness. The wear resistance of grey cast iron was improved using the semisolid processing. The wear rate of grey iron decreases as the fraction of solid increases until 0?12. Further increase of fraction of solid increases the wear rate due to formation of interconnected fine graphite type D. Frictional wear mechanism of iron casting is strongly affected by shape, size and arrangement of graphite precipitates. For semisolid casting at high loading, increasing the sliding speed increases the rate of oxidation and consequently changes the wear mechanism. The damping capacity of semisolid grey cast iron is lower than ordinary grey iron but higher than ductile iron for all strain amplitude ranges. The damping capacity of both ordinary and semisolid grey cast iron increases with strain amplitude.

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Section: Wear Behaviour At Higher Loadingmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Wear resistance and damping capacity of semisolid processed hypoeutectic grey cast iron

Ramadan¹,

Nomura²,

Takita³

2008

Materials Science and Technology

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“…It reduces the carbon solubility in austenite, increases an amount of crystallization nuclei to arise finer carbides, not only in as-cast state but also after heat treatment. Another possibility that has not been enough documented recently is the increasing the molten metal undercooling and solidification rate to affect the cast iron primary crystallization [1,10].…”

Section: Introductionmentioning

confidence: 99%

Abrasion Wear Behavior of High-chromium Cast Iron

Pokusová¹,

Brusilová²,

Šooš³

et al. 2016

Archives of Foundry Engineering

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High-chromium cast irons are used as abrasion resistant materials. Their wear resistance depends on quantity of carbides and the matrix supporting these carbides. The paper presents the results of cast irons of chemical composition (in wt. %) 19-22 Cr and 2-4.5 C alloyed by 1.7 Mo + 5 Ni + 2 Mn to improve their toughness, which were tested in working conditions of ferroalloys crushing. Tests showed that these as-cast chromium cast irons with mostly austenitic matrix achieved the hardness of 38-45 HRC, but their relative abrasion resistance Ψ ranged from 1.3 to 4.6, was higher comparing to the tool made from the X210Cr12 steel heat treated on hardness 61 HRC. The transformation of austenite into martensite occurs not only at the worn strained areas (on a surface of scratch) but also in their neighbourhood. Due to the work hardening of relatively large volumes of transformed austenite the cast iron possesses high abrasion resistance also on the surfaces where low pressures are acting. The tough abrasion-resistant cast iron well proved for production of dynamic and wear stressed castings e.g., crusher hammers, cutting tools for ceramic etc.

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“…Since wear is a surface phenomenon so surface hardening as compared to heat-treating the entire part is more desirable since many castings will crack when subjected to quenching from high temperature. Induction hardening, flame hardening, chemical hardening [4], electron beam hardening [5], laser hardening [6],Tungsten Inert Gas (TIG) welding [7], chill casting are some of the techniques of surface hardening involving thermal means. Surface melted grey cast iron by laser technique has shown improved wear resistance compared to heat treated whole component.…”

Section: Introductionmentioning

confidence: 99%

“…Surface melted grey cast iron by laser technique has shown improved wear resistance compared to heat treated whole component. Recently, TIG welding process has been successfully used to modify surface structure of white cast iron and improving its wear resistance further [7].…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear Characteristics of TIG Processed Surface Modified Grey Cast Iron

2009

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The surface of gray cast iron has been modified by Tungsten Inert Gas (TIG) process. Welding current of magnitude 25, 35, and 45 amperes have been used to melt the surface of gray cast iron. Microstructural characterization, hardness measurement and dry sliding wear tests have been performed on these modified surfaces. It has been observed that increase in welding current caused the microstructure of grey cast iron to be gradually refined. Graphite flakes segregated between interdendritic regions in the as-received grey cast iron have been completely replaced by a uniform distribution of finer graphite flakes in the matrix. Hardness has been found to increase with increase in welding current. Wear resistance of the gray cast iron also increased with increase in the welding current reaching maximum value for 45 amperes. The increased hardness and wear resistance of these modified surfaces have been explained on the basis of microstructural changes occurring at the surfaces of gray cast iron.

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Effect of rapid solidification on sliding wear of iron castings

Cited by 21 publications

References 15 publications

Wear resistance and damping capacity of semisolid processed hypoeutectic grey cast iron

Wear resistance and damping capacity of semisolid processed hypoeutectic grey cast iron

Abrasion Wear Behavior of High-chromium Cast Iron

Friction and Wear Characteristics of TIG Processed Surface Modified Grey Cast Iron

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