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Volume 14 Issue 5
Oct.  2021
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Article Contents
Guan Shaokang, Guo Jinyi, Hu Hanqi, Lu Shuzu. Effect of Undercooling on Solidified Structure in Nd-Fe-B-Si Alloy[J]. Chinese Journal of Engineering, 1992, 14(5): 509-512. doi: 10.13374/j.issn1001-053x.1992.05.003
Citation: Guan Shaokang, Guo Jinyi, Hu Hanqi, Lu Shuzu. Effect of Undercooling on Solidified Structure in Nd-Fe-B-Si Alloy[J]. Chinese Journal of Engineering, 1992, 14(5): 509-512. doi: 10.13374/j.issn1001-053x.1992.05.003

Effect of Undercooling on Solidified Structure in Nd-Fe-B-Si Alloy

doi: 10.13374/j.issn1001-053x.1992.05.003
  • Received Date: 1992-04-20
    Available Online: 2021-10-18
  • By means of a technique of glass encasement on a levitation melting assembly high undercoolings of melt before solidification were obtained for the Nd-Fe-B-Si systems. It is odserved that a transition of growth form from dendritic to cellular occurs as the undercooling is getting higher, and it is a sudden transition, The highest dimensionless undercooling (θ=AT/TL) obtained for the system excesses 0.3, and X-ray diffraction analysis shows the existence of a metastable phese in the soliditied microstructure in this case.

     

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