Pinning Effect of Oxide Particles on Grain Boundaries of a Low Aluminum Non‐oriented Electrical Steel

Ren, Qiang; Zhang, Lifeng; Yang, Wen

doi:10.1002/srin.201900303

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…[ 1 ] To reduce the harm of inclusions on the wire drawing performance, inclusions with good plasticity were suggested for the Si–Mn killed steel [ 2 ] and many related investigations have been carried out. [ 3–5 ] Traditionally, inclusions were proposed to be controlled into those with low melting temperature [ 6–8 ] or low viscosity [ 9–11 ] to achieve good deformability during hot rolling. However, the Si–Mn killed steel is drawn at room temperature, thus, the deformability or fracture of inclusions during cold drawing should no longer have a direct relationship with the melting temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Oxygen at Basic Oxygen Furnace Endpoint on Control of Inclusions in a Si–Mn Killed Steel

Liu

Yang

Zhang

et al. 2021

steel research int.

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The existence of the dissolved aluminum and other impurity elements in alloys would inevitably lead to the formation of the Al2O3 component of inclusions in Si–Mn killed steels. Herein, the effect of dissolved oxygen at the endpoint of basic oxygen furnace (BOF) on the control of inclusions in a Si–Mn killed steel is investigated. With the increase in the dissolved oxygen at the BOF endpoint, the (FeO + MnO) content in the refining slag increases and the dissolved aluminum in the steel decreases as a whole. Meanwhile, the proper increase in the dissolved oxygen hardly deteriorated the cleanliness of the steel. As the equilibrium dissolved oxygen at the BOF endpoint increased from 148 to 402 ppm, the Al2O3 content of inclusions could be lowered to <4 wt%. Both industrial trials and the thermodynamic consideration indicate that increasing the dissolved oxygen at the endpoint of BOF can be an efficient approach to achieve the ultralow Al2O3 content of inclusions in the Si–Mn killed steel due to the oxidation of the dissolved aluminum by the oxygen both in the molten steel and in the refining slag.

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Section: Introductionmentioning

confidence: 99%

Effect of Oxygen at Basic Oxygen Furnace Endpoint on Control of Inclusions in a Si–Mn Killed Steel

Liu

Yang

Zhang

et al. 2021

steel research int.

Self Cite

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“…Oxide-dispersion strengthening (ODS) is a potential strategy to enhance the strength of HEAs, as it inhibits the dislocation motion by oxides. The oxides restrict the grain growth via the pinning effect [20,21]. Oxide-dispersion-strengthened HEA matrix composites have been widely studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of multiple oxides on the mechanical properties of CoCrFeMnNi high-entropy alloy matrix composites

et al. 2021

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This study investigates the oxide formation behaviour and mechanical properties of oxidedispersion-strengthened (ODS) CoCrFeMnNi high-entropy alloy (HEA) matrix composites produced via powder metallurgy. Grain boundary strengthening, solid solution hardening, and precipitation hardening were controlled by varying the duration of mechanical milling and heat treatment durations. The grain size decreased significantly upon milling and it increased to the range of hundreds of nanometres with the heat treatment. Although ex situ-added Y 2 O 3 nanoparticles were uniformly dispersed in the HEA matrix regardless of the milling duration and heat treatment time, different types of in situ oxides, such as Cr-and Mn-oxides, were formed during the heat treatment. Longer milling times led to more crystal defects (e.g. grain boundaries and dislocations) and stored energy in the HEA matrix, thereby stimulating second phase precipitation and oxide formation. Under optimal conditions, the ODS-HEA composites exhibited a good balance between yield strength and elongation in compression.

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“…In nonoriented silicon steels, precipitation is in the form of oxides, [ 5–8 ] carbonitrides, [ 9,10 ] nitrides [ 11–15 ] sulfides, [ 3,16–19 ] and compounds. [ 20,21 ] Ren et al [ 4 ] indicated that adjusting the composition of inclusions can increase the viscosity of inclusions, improving the magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Sulfides in Nonoriented Silicon Steels during Heating Process

Liu

Yong

Zhang

et al. 2020

steel research int.

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The evolution of sulfides in nonoriented silicon steels during the heating process is investigated through chemical composition analysis and thermodynamic calculation. Evolution behaviors of sulfides are analyzed using field emission scanning electron microscope (FESEM) and automatic scanning electron microscope (ASPEX). A homogeneous complex sulfide is detected containing magnesium and manganese. The different proportions of MgS and MnS in the complex sulfide are due to the competition between Mg, Mn, and S in low‐sulfur steel. Sulfides and compounds containing sulfides, oxides, and nitrides are mainly formed during the heating temperature of 1000 °C. The presence of sulfides and compounds with sulfide and oxide is at the temperature of 1300 °C. Sulfides reach equilibrium in less time than AlN at 1000 °C, while the time for sulfides to reach the theoretical equilibrium value takes precedence over oxides at 1300 °C. In addition, the proportions of various types of precipitation at 1300 and 1000 °C are discussed through the theoretical calculation and the observation results.

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Pinning Effect of Oxide Particles on Grain Boundaries of a Low Aluminum Non‐oriented Electrical Steel

Cited by 5 publications

References 13 publications

Effect of Oxygen at Basic Oxygen Furnace Endpoint on Control of Inclusions in a Si–Mn Killed Steel

Effect of Oxygen at Basic Oxygen Furnace Endpoint on Control of Inclusions in a Si–Mn Killed Steel

Effect of multiple oxides on the mechanical properties of CoCrFeMnNi high-entropy alloy matrix composites

Evolution of Sulfides in Nonoriented Silicon Steels during Heating Process

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