Abrasion wear behaviour of alloyed and chilled cast irons

Ribeiro, Laura M. M.; Barbosa, Mário A.; Viana, Filomena; Baptista, A. M.; Dias, C.A.; Ribeiro, Carlos Henrique de Vasconcellos

doi:10.1016/j.wear.2011.01.008

Cited by 25 publications

(12 citation statements)

References 14 publications

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“…They individually reported that the hardness and wear resistance of high-Cr white cast iron increased with decreasing the Cr/C ratio. Ribeiroa et al [19] reported that the high-chromium white cast iron alloy with a Cr/C ratio of 6.8 exhibited the best wear resistance of the tested materials in their study. Also, the alloy HCCI-2 possess a higher volume fraction of eutectic carbides (i.e., 36 %) as mentioned before compared to that of the alloy HCCI-1.…”

Section: Abrasive Wear Behavior Of the Investigated Alloysmentioning

confidence: 81%

“…The addition of small amounts of Mo (i.e., 0.5 % Mo) is sufficient for suppressing pearlite formation when particularly used in combination with other elements such as copper and at a higher Cr/C ratio [15,16]. According to previous studies [17][18][19], some martensite may also present in the austenitic structure, predominantly in localized regions adjacent to the eutectic carbides where the depletion of chromium and carbon from the austenite has raised the Ms temperature sufficiently to permit the transformation to martensite. The pearlitic matrix was obtained in the low-Cr white cast iron in the absence of other alloying additions [20].…”

Section: Microstructure Characterizationmentioning

confidence: 99%

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Wear and Corrosion Behavior of High-Cr White Cast Iron Alloys in Different Corrosive Media

et al. 2015

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This study aims to investigate the effect of Cr/ C ratio on wear and corrosion behavior of a group of highCr white cast iron (HCCI) alloys. Three different alloys of HCCI with different chemical compositions were tested against 3.5 % NaCl, 0.5 M H 2 SO 4 , and 0.5 M NaOH solutions as corrosive media. Electrochemical polarization technique has been used to determine the corrosion current density. The microstructure characteristics of HCCI alloys were analyzed by using optical microscope, SEM, EDS, and XRD. XRD analysis reveals that the microstructure of the HCCI alloys is composed of a network of chromiumrich carbides (M 7 C 3 ) in an austenitic matrix. The abrasive wear resistance of HCCI alloys was found to be rely on their chemical composition and microstructure. The corrosion resistance of the HCCI alloys strongly depends on the Cr/C ratio and the ratio of chromium content in the M 7 C 3 carbide to that in the matrix (CrM 7 C 3 /Matrix). The experimental results of this study showed that the alloy HCCI-2 with the lower Cr/C ratio exhibited the lowest abrasive wear loss while the alloy HCCI-1 with higher Cr/ C ratio exhibited the highest abrasive wear loss. On the other hand, the HCCI-1 alloy was the most corrosion resistant and revealed the lowest current density. In addition, the corrosion current density of all specimens is elevated in 0.5 M H 2 SO 4 solution in comparison with 3.5 wt% NaCl and 0.5 M NaOH solutions.

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Section: Abrasive Wear Behavior Of the Investigated Alloysmentioning

confidence: 81%

Section: Microstructure Characterizationmentioning

confidence: 99%

Wear and Corrosion Behavior of High-Cr White Cast Iron Alloys in Different Corrosive Media

et al. 2015

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“…It has been found that CB100 (Cr/C-5.95,CVF-42.65), a hyper-eutectic alloy with no ledeburite morphology is the hardest and the best wear resistant of white cast irons. This finding is in a good parallelism with Ribeiro et al (2011) whom stated that alloy with a medium Cr/C ratio of 6.8 exhibits the best wear resistance among tested alloys in their study [49].…”

Section: Carbide Volume Fraction (Cvf)supporting

confidence: 87%

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“…In micro-abrasive wear tests, it is usual to observe a linear relationship between the wear volume (V) and the sliding distance [2,14,19]. Since ball penetration depth (h) gradually increases during the test, the total crater projected area also increases.…”

Section: Relationship Between Pressure and Abrasive Wear Modes Transimentioning

confidence: 99%

Effect of sliding distance on abrasive wear modes transition

Cozza

2015

Journal of Materials Research and Technology

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j m a t e r r e s t e c h n o l . 2 0 1 5;4(2):144-150 w w w . j m r t . c o m . b r Two-body abrasion Three-body abrasion Micro-scale abrasion a b s t r a c tThis work presents a study on the effect of sliding distance on abrasive wear modes transition in micro-abrasive wear. Ball-cratering wear tests were conducted with specimens of P20 cemented carbide (WC-Co) and M2 tool steel, balls of 52100 steel and abrasive slurry prepared with SiC particles and distilled water. Results were analyzed in terms of A g (area with grooving abrasion) and A r (area with rolling abrasion) as a function of sliding distance and pressure; they have indicated that with the increasing of sliding distance and, a consequent decreasing of pressure, there is the transition from grooving abrasion to rolling abrasion.

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Abrasion wear behaviour of alloyed and chilled cast irons

Cited by 25 publications

References 14 publications

Wear and Corrosion Behavior of High-Cr White Cast Iron Alloys in Different Corrosive Media

Wear and Corrosion Behavior of High-Cr White Cast Iron Alloys in Different Corrosive Media

UQ eSpace

Effect of sliding distance on abrasive wear modes transition

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