Contributions of Rare Earth Element (La,Ce) Addition to the Impact Toughness of Low Carbon Cast Niobium Microalloyed Steels

Characterization Transformation of Inclusions Using Rare Earth Ce Treatment on Al‐Killed Titanium Alloyed Interstitial Free Steel

“…This structure includes variable valence states, and the atomic size of the 4f layer is large, which creates absolute advantages in terms of mechanical properties and corrosion resistance of the slabs. [10][11][12][13][14][15] Li Y et al [16] conducted laboratory experiments to study the relationship between the Ce content (wt%: 0-0.0744) and the related properties; their work yielded 27Cr-3.8Mo-2Ni super FSS with superior microstructure, mechanical, and corrosion properties. This study found that inclusions were smaller than 1 μm in size and were dispersed in the steel with a Ce addition of 0.0498 wt%.…”

Tensile behavior of normalized low carbon Nb-microalloyed steel in the presence of rare earth elements

“…In another study, it has been found out that RE-particles have a good bonding with the matrix, while there is a gap surrounding the dominant inclusion, i.e. MnS, present in the base steel [36]. This gap/debonded area would serve as stress concentration site, leading to the formation of cracks during the tensile test.…”

“…This refinement is mainly derived from the refined cast structure obtained by RE addition. In a previous work of the authors, the eligibility of RE-inclusions to serve the solidification nucleation sites have been assessed and it was found that RE are able to refine the cast structure and consequently the Prior Austenite Grain Size (PAGS) [36]. The nodule size is determined by the transformation temperature and PAGS; the higher the transformation temperature and/or the coarser the PAGS, the larger nodule size would be [37][38][39].…”

Roles of Inclusion, Texture and Grain Boundary in Corrosion Resistance of Low-Nickel Austenite Stainless Steel Containing Ce

“…For austenitic stainless steels (ASS), the addition of rare earth Ce has recently been employed as an effective way to reduce the content of harmful impurity elements and inclusions, which improves the corrosion resistance of steels. 3,4) Torkamani et al 5) found that rare earth elements could change the interaction between the inclusions and matrix during the solidification process, affecting the microstructural features. Kwon et al 6) reviewed that a decrease in Ce content was attributable to the formation of oxide inclusions, and the inclusion-steel interfacial area could be acted as the preferential site for initiation of pitting corrosion.…”