Outdoor Switching Equipment at Northwest Station Commonwealth Edison Company

Sims, William F.; Axell, C. G.

doi:10.1109/t-aiee.1931.5055758

Cited by 1 publication

(5 citation statements)

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“…Cooling rates is also a key factor that affecting the precipitation characteristic of sulfide. [ 15,29 ] As demonstrated in Figure 5 , the typical morphology and distribution characteristics of sulfide under different cooling rates of 100, 200, and 600 °C min −1 are observed, respectively. As shown in Table 2 and Figure 5, the sulfide in the sulfur‐containing 42CrMo steel is further confirmed to be a typical complex inclusion with main composites of Mn, Mo, and S elements.…”

Section: Resultsmentioning

confidence: 96%

“…It is well known that sulfur is an important factor affecting the susceptibility to cracking in continuous casting. [ 15 ] With the increase of sulfur content in medium‐carbon steel, the liquid–solid‐phase zone increases, which in turn hinders the solidification of steel. [ 24,25 ]…”

Section: Resultsmentioning

confidence: 99%

“…It is well known that sulfur is an important factor affecting the susceptibility to cracking in continuous casting. [15] With the increase of sulfur content in medium-carbon steel, the liquid-solid-phase zone increases, which in turn hinders the solidification of steel. [24,25] Moreover, as shown in Figure 2c, the initial precipitation temperature of MnS in the sulfur-containing 42CrMo steel is 1426.5 °C, and the maximum precipitation content of MnS is 0.06756 wt%.…”

Section: Thermodynamic Calculationmentioning

confidence: 99%

“…[6] Thus, regarding the important role of MnS inclusions in steel, lots of investigations have been performed, especially, the mechanism of morphology evolution by optimizing cooling rates. [15][16][17][18][19][20][21][22][23] At present, according to the classic work by Sims et al, the MnS in an as-cast steel can be typically classified as follows: globular MnS (Type I); fine rodlike MnS (Type II); and angular MnS (Type III). [15,16] However, the mechanisms of morphology evolution by various cooling rates still remain controversial.…”

Section: Introductionmentioning

confidence: 99%

“…[15][16][17][18][19][20][21][22][23] At present, according to the classic work by Sims et al, the MnS in an as-cast steel can be typically classified as follows: globular MnS (Type I); fine rodlike MnS (Type II); and angular MnS (Type III). [15,16] However, the mechanisms of morphology evolution by various cooling rates still remain controversial. Li et al found that the formation of globular and rodlike MnS inclusions can be promoted at the relatively lower cooling rates of 0.43 °C s À1 .…”

Section: Introductionmentioning

confidence: 99%

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Precipitation Characteristic of Sulfide in Medium‐Carbon Sulfur‐Containing Steel

Wang

et al. 2023

steel research int.

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Herein, the precipitation characteristic of sulfide is investigated by confocal laser scanning microscopy for a typical medium‐carbon sulfur‐containing 42CrMo steel under different cooling rates (100, 200, 600 °C min−1) and sulfur contents (0.0018 and 0.0249 wt%). Thermodynamic calculations show that increasing sulfur content can enlarge the liquid–solid‐phase zone and enhance the initial precipitation temperature of MnS in 42CrMo steel. Phase diagram of Mn–Mo–S demonstrates that the sulfides contain Mn, Mo, and S elements can be formed. The experimental results indicate that with an increase of the sulfur content from 0.0018 to 0.0249 wt%, more (Mn, Mo)S sulfides are formed in the steel due to the significant enhancement of supersaturation. Moreover, it is revealed that the average size of (Mn, Mo)S inclusions decreases from 16.11 to 3.55 μm when the cooling rate increases from 100 to 600 °C min−1. The typical of large‐size rodlike (Mn, Mo)S inclusions is observed in a low cooling rates of 100–200 °C min−1. As the cooling rate increases to 600 °C min−1, smaller globular (Mn, Mo)S inclusions with an average size of 3.55 μm are appeared which can act as a core to promote the ferrite formation.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%