The Determination of Non Metallic Inclusions in Steel.

Araki, Ituo

doi:10.2355/tetsutohagane1915.26.1_14

Cited by 3 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many factors influence the deformability of oxide inclusion, such as melting point [22][23][24], chemical composition [25], temperature [26]. The melting point is the most important factor and the oxide inclusions with low-melting points ensure better deformability [21][22][23][24]. The deformability of inclusions increases with the decrease of the melting point of inclusions at a rolling temperature [23,25].…”

Section: Introductionmentioning

confidence: 99%

“…Sulphur as an impurity can reduce fatigue strength of steel [19], and it has been widely accepted that the spring steel with better oxide inclusion deformability has a high fatigue life [20]. Malkiewics and Rudnik [21] proposed the concept of inclusion deformation index, which is used to describe the deformability of inclusions. It is defined as the ratio of the strain of inclusions to the strain of the steel matrix under the condition of the hot working.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Behaviour of oxide inclusions and sulphur in ‘two-stage basicity control’ refining method of Si-killed spring steel

Wang

Han

Zhang

et al. 2020

Ironmaking & Steelmaking

View full text Add to dashboard Cite

A 'two-stage basicity control' refining method was carried out that high basicity (R > 1.5) top slag was used in the LF refining and then low basicity (R = 0.8-1.0, Al 2 O 3 < 6%) top slag was used in VD refining. This method can obtain inclusions with better deformability and make the top slag have good desulphurization ability. The average sulphur removal percentage of the refining is 47.22%. There were mainly three types of inclusions classified as Al 2 O 3 -SiO 2 , CaO-Al 2 O 3 -SiO 2 , and MgO-CaO-Al 2 O 3 -SiO 2 inclusions in the LF refining. In the VD refining, the number of Al 2 O 3 -SiO 2 and CaO-Al 2 O 3 -SiO 2 inclusions reduced obviously. The main type of inclusions was MgO-CaO-Al 2 O 3 -SiO 2 and their melting points reduced from about 1873 K to less than 1673 K during the VD refining. The results of thermodynamic calculations show that the mass fraction of [Al] should be controlled less than 20×10 −6 to obtain low-melting point inclusions (<1673 K).

show abstract