Effect of antimony addition and asymmetric cold rolling on the texture and magnetic properties of a 1.2% Si steel

A medium-carbon low-alloy steel was prepared via the asymmetric rolling process with different ratios of upper and down roll velocities. Subsequently, the microstructure and mechanical properties were explored by using SEM, EBSD, TEM, tensile tests and nanoindentation. The results show that asymmetrical rolling (ASR) can significantly improve strength while retaining good ductility compared with conventional symmetrical rolling. The yield strength and tensile strength of the ASR-steel are 1292 ± 10 MPa and 1357 ± 10 MPa, respectively, which are higher than the values of 1113 ± 10 MPa and 1185 ± 10 MPa for the SR-steel. The ASR-steel retains good ductility of 16.5 ± 0.5%. The significant increase in strength is related to the joint actions of the ultrafine grains, dense dislocations and a large number of nanosized precipitates. This is mainly because of the introduction of extra shear stress on the edge under asymmetric rolling, which induces gradient structural changes hence increasing the density of geometrically necessary dislocations.

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Effect of antimony addition and asymmetric cold rolling on the texture and magnetic properties of a 1.2% Si steel

Cited by 3 publications

References 39 publications

Effect of Sb and Initial Annealing on the Microstructure, Texture, and Magnetic Behavior of Low Silicon Steel Produced by Single-Roll Drive Rolling

Effect of Sb and Initial Annealing on the Microstructure, Texture, and Magnetic Behavior of Low Silicon Steel Produced by Single-Roll Drive Rolling

Comparisons of {100} texture improvement and formability in hot-rolled non-oriented electrical steel by austenite–ferrite phase transformation and shear deformation

Strengthening a Medium-Carbon Low-Alloy Steel by Nanosized Grains: The Role of Asymmetrical Rolling

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