Nucleation of Acicular Ferrite on Sulfide Inclusion during Rapid Solidification of Low Carbon Steel

Liu, Zhongzhu; Kobayashi, Yoshinao; Yin, Fuxing; Kuwabara, Mamoru; Nagai, Kotobu

doi:10.2355/isijinternational.47.1781

Cited by 56 publications

(43 citation statements)

References 30 publications

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“…Liu et al [10][11][12] recently reported on the possibility of utilizing copper to improve the mechanical properties of steel by precipitating copper sulfide. The CuS is preferable to MnS, in view of the nucleation of acicular ferrite, because of its lower misfit with ferrite.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics of Copper Dissolution into MnO–SiO2–MnS Inclusion System

Park

Lee

et al. 2009

ISIJ Int.

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Section: Introductionmentioning

confidence: 99%

Thermodynamics of Copper Dissolution into MnO–SiO2–MnS Inclusion System

Park

Lee

et al. 2009

ISIJ Int.

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“…During the last 10-15 years many studies 10,12,46,[60][61][62][63][64][65] have discussed the effect of a Mn-depleted zone (MDZ) near inclusions on the acicular ferrite formation. It is well known that an increased Mn content promotes the enlargment of the austenite zone in steel.…”

Section: Depletion Of Mn Content Near Inclusionsmentioning

confidence: 99%

“…10,12,46,[60][61][62][63][64][65] It should be pointed out that it is, in many cases, difficult to decide which mechanism that is most important for formation of acicular ferrite. Instead, it is believed that these mechanisms often work together to promote the intragranular nucleation on inclusions.…”

Section: Mechanisms Of Acicular Ferrite Nucleationmentioning

confidence: 99%

On the Role of Non-metallic Inclusions in the Nucleation of Acicular Ferrite in Steels

2009

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The effects of non-metallic inclusions in nucleating acicular ferrite in steels during cooling from a weld or cooling from an austenitic temperature are reviewed. The influence of the acicular ferrite (AF) structure on mechanical properties of steels such as strength and toughness is briefly mentioned. The different factors affecting the formation of acicular ferrite, such as the soluble content of alloying elements in steel, cooling rate from austenitizing temperature, austenite grain size and inclusion characteristics in steel, are discussed. The mechanisms of acicular ferrite formation on non-metallic inclusions, such as reduction of interfacial energy, mismatch strain between the inclusion and ferrite/austenite, thermal strains at the inclusions and changes in matrix composition near the inclusions are also discussed. Finally, the effects of inclusion characteristics, such as size, number and composition are described and their effectiveness in nucleating acicular ferrite is discussed.KEY WORDS: non-metallic inclusions, intragranular acicular ferrite formation, strength and toughness, steel. 1063

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“…Os valores encontrados neste trabalho está de acordo com outros resultados encontrados em publicações [1,10,13,20,21]. Desta forma, quanto maior o tamanho das inclusões, maior o potencial de formação de ferrita acicular.…”

Section: Resultsunclassified