Weili Ren
Shanghai University
Ultimate tensile strengthMagnetic fieldTransmission electron microscopyTransverse planeComposite materialEutectic systemMetallurgyMaterials scienceSuperalloyCrystal growthScanning electron microscopeCondensed matter physicsDirectional solidificationAlloyChemical engineeringPhase (matter)NucleationThermoelectric effectSingle crystalDendrite (crystal)MicrostructureMagnetostatics
88Publications
18H-index
1,034Citations
Publications 88
Newest
#1Zhe Shen (SHU: Shanghai University)H-Index: 5
#2Bangfei Zhou (SHU: Shanghai University)H-Index: 7
Last. Zhongming Ren (SHU: Shanghai University)H-Index: 30
view all 10 authors...
The present study investigates the evolution of the micro- and macrostructure and tensile property of the Cu-15Ni-8Sn (weight percent) alloy prepared by horizontal continuous casting and electromagnetic stirring (EMS). The results show that the application of EMS is beneficial for grain refinement and for microstructure transformation from the dendrite to the rosette structure and that it leads to a significant improvement in the tensile property. The forced flow induced by EMS homogenizes the t...
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#1Chunmei Liu (SHU: Shanghai University)H-Index: 1
#2Yunbo Zhong (SHU: Shanghai University)H-Index: 20
Last. Zhongming Ren (SHU: Shanghai University)H-Index: 30
view all 8 authors...
Abstract Fe-4.5 wt% Si alloy was solidified in the presence of an axial high static magnetic field (HSMF) to investigate the influence of magnetic field on the crystal orientation and magnetic property. With the increase of magnetic field intensity (MFI), the crystal orientation of the Fe-4.5 wt% Si alloy turns to 〈1 0 0〉 which is the easy magnetization axis. The specimen with strong Goss texture was obtained under a 6 T HSMF. Moreover, the saturation magnetic induction also increases with the i...
3 CitationsSource
#1Zhe Shen (SHU: Shanghai University)H-Index: 5
#2Bangfei Zhou (SHU: Shanghai University)H-Index: 7
Last. Zhongming Ren (SHU: Shanghai University)H-Index: 30
view all 7 authors...
Abstract The refinement mechanism of primary dendrite spacing caused by a transverse static magnetic field during directional solidification was proposed and verified experimentally in this paper. According to the Kurz-Fisher model, this magnetic field-induced refinement is related to the temperature gradient and solute redistribution in the mushy zone during directional solidification. Therefore, the effect of the magnetic field on the temperature gradient was investigated and the solute redist...
5 CitationsSource
#1Chummei LiuH-Index: 1
#2Yunbo ZhongH-Index: 1
Last. Zhongming RenH-Index: 1
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Fe-1.0 wt% Si alloy was treated during bulk solidification under different transverse weak magnetic fields of 0, 0.3 and 0.6 T. The effect of the transverse weak magnetic field on texture evolution and magnetic property of the alloy was investigated. It can be found that with an increase in the magnetic field intensity from 0 to 0.6 T, the texture evolution experiences a transformation from 〈111〉 to 〈110〉 to 〈100〉. It indicates that the unfavorable γ texture is gradually eliminated, which will i...
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#1Peijian Shi (SHU: Shanghai University)H-Index: 2
#2Weili Ren (SHU: Shanghai University)H-Index: 18
Last. Peter K. Liaw (UT: University of Tennessee)H-Index: 94
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Realizing improved strength–ductility synergy in eutectic alloys acting as in situ composite materials remains a challenge in conventional eutectic systems, which is why eutectic high-entropy alloys (EHEAs), a newly-emerging multi-principal-element eutectic category, may offer wider in situ composite possibilities. Here, we use an AlCoCrFeNi2.1 EHEA to engineer an ultrafine-grained duplex microstructure that deliberately inherits its composite lamellar nature by tailored thermo-mechanical proces...
149 CitationsSource
#1Zhe Shen (SHU: Shanghai University)H-Index: 5
#2Minghu Peng (SHU: Shanghai University)H-Index: 4
Last. Zhongming Ren (SHU: Shanghai University)H-Index: 30
view all 9 authors...
Abstract The effects of forced flows at different velocities on microstructure and solute distribution during the directional solidification of Sn-10 wt% Bi alloys under a simultaneous imposition of a transverse static magnetic field (TSMF) and an external direct current (DC) have been investigated experimentally and numerically. The experimental results show that the solid-liquid interface will gradually become sloping with the increase of the forced flow velocity when the thermoelectric magnet...
4 CitationsSource
#1Biao Ding (SHU: Shanghai University)H-Index: 3
#2Weili Ren (SHU: Shanghai University)H-Index: 18
Last. Yunbo Zhong (SHU: Shanghai University)H-Index: 20
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Abstract Based on the tensile stress-dominated (strain ratio, R = e min / e max = 0 ) and compressive stress-dominated (R = ∞) low-cycle fatigue (LCF) of a first-generation directionally solidified Ni-based superalloy DZ445 at 900 °C, the paper investigated the contribution of tensile stress and compressive stress to the damage during LCF and creep-fatigue deformation. The results demonstrated that the fatigue life in the case of tensile stress-dominated LCF is about half of that in compressive ...
2 CitationsSource
#1Qiang Li (SHU: Shanghai University)H-Index: 5
#1Li Qiang (SHU: Shanghai University)H-Index: 1
Last. Ren Zhong-ming (SHU: Shanghai University)H-Index: 3
view all 7 authors...
The voltage was recorded to investigate the influence of the static magnetic field on droplet evolution during the magnetically controlled electroslag remelting (MC-ESR) process. MC-ESR experiments were carried out under different remelting current, and transverse static magnetic fields (TSMF) of 85 mT, 130 mT and 160 mT were superimposed. Statistical work was performed to obtain the quantitative data of the droplets. The ASPEX Explorer was utilized to investigate the inclusions evolution of GCr...
2 CitationsSource
#1Minghu Peng (SHU: Shanghai University)H-Index: 4
#2Yunbo Zhong (SHU: Shanghai University)H-Index: 20
Last. Zhongming Ren (SHU: Shanghai University)H-Index: 30
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Abstract A new preparation method of near-net-shape 6.5 wt% Si high silicon steel sheets was proposed by combining composite electrodeposition (CED) and diffusion annealing under magnetic field. The obtained sheets were characterized by scanning electron microscopy, energy dispersive spectrometry, analytical balance and a silicon steel material measurement system. The results show that the surface morphology, the elemental distribution, the cathode current efficiency and the silicon content of c...
5 CitationsSource
#1Dongsheng ZhuH-Index: 2
#2Minghu PengH-Index: 4
view all 10 authors...
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