Zhongming Ren

Shanghai University

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Jiang Wang

Aerospace Information Research Institute

163

Kang Deng

University of Electronic Science and Technology of China

Jianbo Yu

Shanghai University

Chaoyue Chen

Sun Yat-sen University

Chuanjun Li

Shanghai University

Weili Ren

Shanghai University

Yves Fautrelle

Science et Ingénierie des Matériaux et Procédés

Weidong Xuan

Shanghai University of Engineering Science

Yunbo Zhong

Shanghai University

Sansan Shuai

Shanghai University

Cooperative Institutions

Shanghai University

397

Chinese Academy of Sciences

186

Centre National de la Recherche Scientifique

Shanghai Jiao Tong University

Huazhong University of Science and Technology

University of Chinese Academy of Sciences

Tsinghua University

Central South University

Northwestern Polytechnical University

Northeastern University

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Microsegregation Formation in Al–Cu Alloy under Action of Steady Magnetic Field

ISIJ International (2018)

Shengya He Chuanjun Li Rui Guo Weidong Xuan Zhongming Ren

The effect of a steady magnetic field (SMF) on microsegregation in the Al-4.5mass%Cu alloy during equiaxed solidification was investigated experimentally. It was found that the amount of microsegregation increased with increasing the SMF intensity at the same cooling rate. The variation of the microsegregation level with the SMF intensity at different cooling rates showed the consistent tendency. The effect of the change in various factors such as diffusivity in the solid phase, dendrite coarsening and undercooling on the microsegregation behavior was analyzed. The reduction of diffusivity in the solid phase in the SMF increased the microsegregation level. The increase in average nucleation undercooling of primary Al phase in the SMF, which was examined by the differential thermal analysis (DTA), led to decrease the amount of microsegregation. The enhancement of coarsening kinetics in the SMF increased the microsegregation level. Under the combined action of various factors, it was found that the increase in microsegregation in the range of the cooling rates under investigation was mainly attributed to the increase of the secondary dendrite arm spacing (SDAS) and the decrease in solid diffusion coefficient induced by the SMF.

Equiaxed crystals

Supercooling

Dendrite (mathematics)

10.2355/isijinternational.isijint-2017-616

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Citations (9)

Microstructure evolution and mechanical behavior of Ni-rich Ni-Mn-Ga alloys under compressive and tensile stresses

Journal of Material Science and Technology (2021)

Yue Wang Siyuan Yang Ting Zhou Long Hou Lansong Ba

10.1016/j.jmst.2021.04.040

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Citations (15)

Effect of a low axial magnetic field on the primary Al2Cu phase growth in a directionally solidified Al–Cu hypereutectic alloy

Journal of Crystal Growth (2011)

Yu Shen Zhongming Ren Li Xi Weili Ren Yan Xi

Directional solidification

10.1016/j.jcrysgro.2011.08.043

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Citations (15)

On the control of epitaxial growth and stray grains during laser-directed energy deposited Ni-based single crystal superalloy

Materials Characterization (2024)

Wei Guan Chaoyue Chen Xinwei Pan Ruixin Zhao Xufei Lu

10.1016/j.matchar.2024.113969

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Citations (2)

Modeling of the effect of a thermoelectric magnetic force onto conducting particles immersed in the liquid metal

IOP Conference Series Materials Science and Engineering (2015)

Y. Du Terrail Couvat O. Budenkova Annie Gagnoud G. Salloum Abou Jaoude Henri Nguyen-Thi

Simulation of a thermo-electromagnetic force which acts on a conducting particle immersed into liquid metal is performed using multi-gird multi-physics software AEQUATIO. To verify numerical solutions a model thermoelectric problem is solved using two methods. In the first one a phase function is used to indicate the phase transition whereas in the second the solid particle is described with a real frontier of a simplified shape. Numerical and analytical solutions for a model problem qualitatively agree but strong oscillations are observed in a numerical solution with a phase function. Further AEQUQTIO is applied for calculation of the velocity of a dendrite fragment observed in-situ in experiment of solidification of AlCu alloy. Numerical solution gives a good agreement with the experimental observation.

Particle (ecology)

Dendrite (mathematics)

Liquid metal

10.1088/1757-899x/84/1/012019

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Citations (1)

Effect of a high magnetic field on microstructures of Ni-based superalloy during directional solidification

Journal of Alloys and Compounds (2014)

Weidong Xuan Zhongming Ren Chuanjun Li

Equiaxed crystals

Directional solidification

Dendrite (mathematics)

Rotating magnetic field

10.1016/j.jallcom.2014.09.114

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Citations (31)

Machine learning assisted prediction and optimization of mechanical properties for laser powder bed fusion of Ti6Al4V alloy

Additive manufacturing (2024)

Yuheng Cao Chaoyue Chen Songzhe Xu Ruixin Zhao Kai Guo

Ductility (Earth science)

Titanium alloy

10.1016/j.addma.2024.104341

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Citations (21)

STUDY OF INITIAL SOLIDIFICATION IN SOFT CONTACT ELECTROMAGNETIC CONTINUOUS CASTING

Acta Metallurgica Sinica (1999)

Zhongmin Ren Zhongming Ren

The heat transfer and initial solidification in electromagnetic soft contact continuous casting have been investigated experimentally and numerically. The temperature field, starting point of solidification and shell thickness of Sn round billet during the continuous casting were measured. In the mathematical model, the following factors were taken into account: (1) heat induced in the mold and in the metal due to the electromagnetic field; (2) increase in heat resistance on the interface between the mold and the metal owing to the electromagnetic force. The influence of heat transfer and solidification on surface quality of billet was also analyzed. It is shown that with electromagnetic field, the temperature of the liquid metal was homogenized, the starting point of initial solidification was lower, the shell thickness was smaller, and the surface quality of the billet was improved obviously. In addition, it seems that in the case of Sn, among the three effects of the electromagnetic field, that is, producing heat in the mold, and increasing heat resistance on the interface due to the electromagnetic force, producing heat in the metal,the former two have greater influence on the heat transfer and solidification of the metal.

Liquid metal

Source

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Citations (1)

Effect of static magnetic heat treatment on microstructures and mechanical properties of DZ483 alloy

Journal of Alloys and Compounds (2015)

Zhaojing Yuan Chuanjun Li Ma Chenkai Xingfu Ren Zhenqiang Zhang

Elongation

Magnetic shape-memory alloy

10.1016/j.jallcom.2015.01.016

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Citations (3)