Influences of Mg, S and Graphitization Rate on the Spheroidization of Graphite

Lee, Yongha; Irie, Yoshitomo; Yamamoto, Satoru; Kawano, Yutaka

doi:10.2320/jinstmet1952.48.11_1041

Cited by 3 publications

(2 citation statements)

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“…Therefore, although the strips were prerolled, there are significantly fewer temper graphite particles in this region than in other regions. As mentioned earlier, Lee et al [4,19,20] investigated how plastic deformation affects the graphitization of Mg treated white iron. Carbon atoms will precipitate into microvoids or pores, resulting in the formation of spheroidal graphite during annealing.…”

Section: Function Of Thickness Reductionmentioning

confidence: 98%

The effect of rolling on graphitization characteristics of strip cast Fe-C-Si white cast iron

Song

Kuo

Lui

et al. 2000

Metall Mater Trans A

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This study examined the first-stage graphitization of white cast iron strip after rolling. Experimental results confirmed that prerolling promotes and accelerates graphitization. The critical complete graphitization time was significantly shortened even after a small rolling reduction, and the number of temper graphite particles increased with increasing rolling reduction. Some of the evidence confirmed that these effects can be attributed to microstructural defects introduced by prerolling. These defects contribute to a shorter incubation period, a decreased complete graphitization time, and an increased number of temper graphite nucleation sites. In addition, this study adds further evidence to the assumption that graphite nucleation occurs at the interface between eutectic cementite and matrix, particularly in deformation cracking on eutectic cementite.

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Section: Function Of Thickness Reductionmentioning

confidence: 98%

The effect of rolling on graphitization characteristics of strip cast Fe-C-Si white cast iron

Song

Kuo

Lui

et al. 2000

Metall Mater Trans A

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“…Furthermore, the higher the cooling rate, the lower the Si content in the Si‐enriched zone of the carbide/austenite interface [18]. From the point of view of chemical composition, increasing carbon and/or, in particular, silicon contents as well as magnesium and sulphur contents contribute to accelerated graphite formation [19–21]. The literature contains different information on the limit temperature at which graphitization occurs.…”

Section: Introductionmentioning

confidence: 99%

Investigations on the thermal stability of microstructures generated by different thermal electron beam surface treatments

Buchwalder

Thronicke

Holst

et al. 2021

Materialwissenschaft Werkst

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Surface treatments are frequently used to improve the wear and/or corrosion resistance of metal components. In the case of cast iron, the material‐specific graphite limits both its treat‐ability and load‐bearing behaviour. A promising option for overcoming these limitations is provided by combination processes, in which near‐surface graphite is first removed in an initial liquid‐phase surface treatment – such as, e. g., remelting, alloying or cladding using electron beam (EB) – before application of thermochemical processes or hard coatings. A prerequisite for this is sufficient thermal resistance of these microstructures. This was investigated by means of annealing tests. The ranges of temperature used for annealing are based on those typically used for hard coating (250 °C–500 °C), nitriding (400 °C–600 °C) and boriding (600 °C–860 °C). The metastable microstructures produced as a result of rapid solidification during the electron beam liquid‐phase treatments differ in their alloy content and, therefore, in their microstructural components. Hardness measurements after annealing provided an initial indication of thermal stability. Based on these measurements, interesting treatment conditions were analysed in more detail using scanning electron microscopy and x‐ray diffraction. The focus of interest was on the formation of secondary graphite and the dissolution of ledeburitic carbides and other intermetallic phases.

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Progress and development trends in the numerical modeling of solidification

Huang

Wang

2014

Chin. Sci. Bull.

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Influences of Mg, S and Graphitization Rate on the Spheroidization of Graphite

Cited by 3 publications

References 0 publications

The effect of rolling on graphitization characteristics of strip cast Fe-C-Si white cast iron

The effect of rolling on graphitization characteristics of strip cast Fe-C-Si white cast iron

Investigations on the thermal stability of microstructures generated by different thermal electron beam surface treatments

Progress and development trends in the numerical modeling of solidification

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