Based on Microscale Laser Shock Processing of Metal Material Characteristics Analysis and Prospect

Wang, Bang Fu; Zhu, Xue Li; Xie, Ou; Zhang, Yin

doi:10.4028/www.scientific.net/amr.450-451.273

Cited by 1 publication

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“…However, these methods have disadvantages such as high iron loss and fluoride pollution. Adding various metals and alloys to molten steel (iron) to remove arsenic has also been investigated, such as silicon, barium, aluminum, calcium, zirconium, boron, rare earth elements (REs), and their alloys [13,14]. Among them, rare earths and calcium have proved to be relatively effective, but the required addition amount is high (for example, the initial addition of cerium is 2.5%) [14].…”

Section: Introductionmentioning

confidence: 99%

Distribution of Arsenic Inclusions in Rare Earth Steel Ingots

Wang

Jiang

et al. 2020

Metals

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Trace element arsenic is detrimental to the quality and properties of steel products. We used lanthanum to modify the distribution of arsenic by the formation of arsenic rare earth inclusions and investigated all inclusions on the full profile of the ingots prepared in the laboratory. The results show that the addition of lanthanum has dramatically influenced the distribution of arsenic in the ingots by the formation of arsenic inclusions. The arsenic inclusions turn out to be mainly the cluster-shaped La-S-As, as well as its composite inclusions combined with LaS and La-As. La-S-As can be considered a solid solution of LaS and LaAs. They distribute mainly at the top surface of the ingots within 3 mm, at the side and bottom surfaces within 1.5 mm, leading to a dramatic decrease of arsenic concentration at the inner part of the ingots. This distribution characteristic of La-S-As can be used to manufacture steel ingots with very low arsenic concentration by peeling off these (La-S-As)-containing layers. On the contrary, the distribution of composite inclusions (La-S-As)-(La-As) and single-phase La-As, is uniform. Except for the reaction with arsenic, lanthanum can also react with phosphorous and antimony to modify the existing state of these trace elements.

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Section: Introductionmentioning

confidence: 99%