The Segregation Behavior of Alloying Elements in the Al-5Fe-Based Alloys During the Semisolid Deformation

Liu, Bo

doi:10.1007/s11837-015-1520-7

Cited by 7 publications

(2 citation statements)

References 16 publications

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“…23,24) Moreover, EMS was used to eliminate the segregation of solute elements in ingots. 25,26) In this paper, we report on the microstructural characterization of cobalt added high chromium steel and the evaluation of its elevated-temperature strength to provide fundamental information regarding its potential application to heat-resistant steel. EMS is used to exclude large inclusions and refine the grain size, making the remnant inclusions to distribute homogeneously.…”

Section: Introductionmentioning

confidence: 99%

Size and Type of Inclusions in Fe–Cr–Co Heat–resistant Steel and Elevated-temperature Strength under the Effect of Electromagnetic Stirring

Zhang

Hou

et al. 2019

ISIJ Int.

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We fabricated the Fe-18Cr-2Ni-1Mo-0.2C-0.2Mn-0.1Si heat-resistant steels containing 3 to 12% Co by casting in the presence of a rotary electromagnetic stirring (EMS). The effect of EMS on the Fe-Cr-Co steels was evaluated by the size and type of inclusions and the examination of mechanical properties. The morphology and composition of inclusions were observed, and the formation mechanism of the inclusions was analyzed through thermodynamic calculation using Thermo-Calc. The results showed that there were mainly two types of inclusions generated in the solidification process, including the Al 2 O 3 corundum and the MnO. Cr 2 O 3 spinel. The application of EMS during solidification has shown a significant effect on the exclusion of large inclusions. Both the number density and the size of inclusions decreased under the effect of EMS. The mechanical properties at elevated temperatures were investigated considering the effect of cobalt addition and EMS. The strength of the steel increased with increasing cobalt content. At 800°C, an increase in cobalt from 3 to 12% resulted in a substantial strength increase concomitant with an increase in elongation rate. EMS reduced the ultimate tensile strength but enhanced the ductility of the steels. These effects were discussed relating to an early suppression of the δ-ferrite formation and the exclusion of large inclusions.

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Section: Introductionmentioning

confidence: 99%

Size and Type of Inclusions in Fe–Cr–Co Heat–resistant Steel and Elevated-temperature Strength under the Effect of Electromagnetic Stirring

Zhang

Hou

et al. 2019

ISIJ Int.

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“…EMS has also been reported to remove inclusion in melts, and improve cleanliness, such as in steels [ 23 , 24 , 25 ], and Incoloy 825 alloys [ 12 ]. Moreover, EMS was used to eliminate the micro- and macrosegregation of solute elements in ingots [ 26 , 27 ]. Also, the EMS applied to the solidification of metals led to the refinement and better distribution of precipitates [ 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Electromagnetic Stirring on the Microstructure and Properties of Fe-Cr-Co Steel

et al. 2018

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High chromium steel has been synthesized by an induction furnace adopting electromagnetic stirring (EMS). Varying amounts of cobalt was added to obtain 3, 6, and 12% Co in the steel. The melt was allowed to solidify with or without EMS in a rotary magnetic field. The effects of the varying cobalt content and the stirring have been characterized by the microstructural evolution and the consequent improvement in mechanical properties. The application of a rotary EMS during solidification has shown a significant effect on the grain refining, the reduction of element segregation, the promotion of eutectic volume fraction, and the consequent improvement of mechanical properties, including hardness and high-temperature strength. The formation mechanism of the eutectic structure and the precipitation of M7C3 and M23C6 carbides was discussed according to the calculated phase diagram. The increment of cobalt content improved the eutectic volume fraction. Cobalt addition also enhanced the hardness and the yield tensile strength, provided that the ingot structure was homogenized by the EMS.

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Effect of Cr and Zr on the Tensile Creep Behavior of Al-5Fe Based Semisolid Alloys

Liu

2018

JOM

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The Segregation Behavior of Alloying Elements in the Al-5Fe-Based Alloys During the Semisolid Deformation

Cited by 7 publications

References 16 publications

Size and Type of Inclusions in Fe–Cr–Co Heat–resistant Steel and Elevated-temperature Strength under the Effect of Electromagnetic Stirring

Size and Type of Inclusions in Fe–Cr–Co Heat–resistant Steel and Elevated-temperature Strength under the Effect of Electromagnetic Stirring

Effect of Electromagnetic Stirring on the Microstructure and Properties of Fe-Cr-Co Steel

Effect of Cr and Zr on the Tensile Creep Behavior of Al-5Fe Based Semisolid Alloys

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