材料科学技术(英文版)2021，Vol.76Issue(17) ：51-59.

Microstructure evolution of peritectic Al-18 at.％Ni alloy directionally solidified in high magnetic fields

Yubao Xiao Tie Liu Yuxin Tong Meng Dong Jinshan Li Jun Wang Qiang Wang
材料科学技术(英文版)2021，Vol.76Issue(17) ：51-59.
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Microstructure evolution of peritectic Al-18 at.％Ni alloy directionally solidified in high magnetic fields

Yubao Xiao 1Tie Liu 2Yuxin Tong 2Meng Dong 3Jinshan Li 4Jun Wang 4Qiang Wang2
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作者信息

  • 1. Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education),Northeastern University,Shenyang 110819,China;School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China
  • 2. Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education),Northeastern University,Shenyang 110819,China
  • 3. School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China
  • 4. State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China
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Abstract

The effect of a high magnetic field on the microstructural evolution of a peritectic Al-18 at.％Ni alloy during directional solidification and its dependence on pulling speed were investigated.At a low pulling speed,the application of a 2 T magnetic field triggered the appearance of a primary Al3Ni2 phase.At higher pulling speeds,a high magnetic field application induced primary Al3Ni2 phase segregation that formed close to the central alloy regions.For all pulling speeds,the application of a high magnetic field induced bulk Al3Ni/Al eutectic formation on the upper and lower parts of the alloys,and promoted elongated growth of the peritectic Al3 Ni phase along the magnetic field direction.Microstructural analysis indicated that microstructural evolution that was induced by high magnetic fields can be attributed to solute migration and melt flow that is regulated by magnetic,Lorentz,and thermoelectric magnetic forces and their coupling effects during peritectic solidification.

Key words

High magnetic field/Peritectic reaction/Directional solidification/Microstructure

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基金项目

出版年

2021
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量23
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