Behavior of Dual-Phase (MnO-SiO2-Al2O3) + (SiO2) Inclusions in Saw Wire Steels During Hot Rolling and Cold Drawing

The behavior of dual-phase (MnO-SiO 2 -Al 2 O 3 ) + (SiO 2 ) inclusions in saw wire steels during hot rolling and cold drawing was investigated in detail. It was found that the inclusion matrix (glassy MnO-SiO 2 -Al 2 O 3 (silicate)) manifested rheological properties and the precipitated SiO 2 exper...

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Bibliographic Details
Published in:Metallurgical and materials transactions. B, Process metallurgy and materials processing science Process metallurgy and materials processing science, 2020-02, Vol.51 (1), p.95-101
Main Authors: Wang, Kunpeng, Jiang, Min, Wang, Xinhua, Wan, Wenhua, Wang, Ying
Format: Article
Language:English
Subjects:
Aluminum oxide
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cold
Cold drawing
Cold rolling
Dual phase steels
Duplex stainless steels
Formability
Hot rolling
Inclusions
Manganese oxides
Materials Science
Melting points
Metallic Materials
Nanotechnology
Rheological properties
Silicon dioxide
Structural Materials
Surfaces and Interfaces
Thin Films
Wire
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Summary:The behavior of dual-phase (MnO-SiO 2 -Al 2 O 3 ) + (SiO 2 ) inclusions in saw wire steels during hot rolling and cold drawing was investigated in detail. It was found that the inclusion matrix (glassy MnO-SiO 2 -Al 2 O 3 (silicate)) manifested rheological properties and the precipitated SiO 2 experienced poor deformation in hot rolling. After multi-pass hot rolling, these two phases gradually became separated from each other. The former was elongated into a thin strip, whereas the shape of the latter was deformed from spherical to ellipsoid. Despite their distinctive deformability during hot rolling, MnO-SiO 2 -Al 2 O 3 and SiO 2 were both crushed into smaller pieces during cold drawing. With the proceeding of drawing, shattered pieces became tiny and their interspaces were enlarged, thus causing a reduction in filament breakage. Based on these findings, inclusions were categorized by their melting points and Young’s moduli. Hence, the effects of inclusions on saw wires fabricated by hot rolling and cold drawing were more quantitatively evaluated, and the obtained results were found to be in good agreement with industrial findings.
ISSN:1073-5615
1543-1916
DOI:10.1007/s11663-019-01727-5