2020
DOI: 10.3390/met10080993
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Carbide to Graphite Transition Control by Thermal Analysis in Grey Cast Irons

Abstract: The present work compared the solidification pattern of un-inoculated and inoculated hypoeutectic grey cast irons (3.7–3.8% CE), focused on carbide to graphite formation transition, by the use of an adequate experimental technique, able to measure real stable (Tst) and metastable (Tmst) eutectic temperatures. Have been used three ceramic cups for investigating thermal analysis: (i) for normal solidification; (ii) with addition of Te for Tmst measurement; (iii) with more inoculant addition for Tst measurement. … Show more

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Cited by 4 publications
(3 citation statements)
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“…These are generally present in minimal amounts as impurities in raw materials, but Ce and Mg are added to the melt during treatment. Neacsu et al (2020) compared the solidification of uninoculated and inoculated hypoeutectic grey cast irons with carbon equivalents (CEs) 3.7%-3.8% and concentrated on the carbide to graphite production propensity by using measured stable and metastable eutectic temperatures. According to Seidu and Ripos an (2011), higher undercooling before recalescence increases the risk of formation of carbides during the solidification and reduces the nodule count.…”
Section: Introductionmentioning
confidence: 99%
“…These are generally present in minimal amounts as impurities in raw materials, but Ce and Mg are added to the melt during treatment. Neacsu et al (2020) compared the solidification of uninoculated and inoculated hypoeutectic grey cast irons with carbon equivalents (CEs) 3.7%-3.8% and concentrated on the carbide to graphite production propensity by using measured stable and metastable eutectic temperatures. According to Seidu and Ripos an (2011), higher undercooling before recalescence increases the risk of formation of carbides during the solidification and reduces the nodule count.…”
Section: Introductionmentioning
confidence: 99%
“…These conditions should include chemical composition of the casting alloy, casting temperature and speed, gating and feeding system, cooling rate, size of castings, composition of facing sand and heap sand moulding mixtures etc.). Different moulds [1][2][3][4][5][6][7][8][9][10] or common mould for two or more castings [11][12][13][14][15][16] are usually used for investigation and comparison of pilot and control castings, meaning the same preset conditions of the effect of external factors on investigated castings. It does not allow to cast simultaneously pilot and con-trol castings with common gating and feeding system (from one side) and with individual cooling procedures (from other side).…”
Section: Introductionmentioning
confidence: 99%
“…The casting process is not only used for cast iron, but also for non-ferrous materials [3][4][5][6][7]. Gray cast iron has flake -shaped graphite, while ductile cast iron has nodular graphite [8]. The formation of graphite is influenced by silicon; the more silicon the more graphite is formed [9].…”
Section: Introductionmentioning
confidence: 99%