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

Guan Shaokang; Guo Jinyi; Hu Hanqi; Lu Shuzu

doi:10.13374/j.issn1001-053x.1992.05.003

Volume 14 Issue 5

Oct. 2021

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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

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

doi: 10.13374/j.issn1001-053x.1992.05.003

Department of Metallurgy

Received Date: 1992-04-20
Available Online: 2021-10-18

Abstract

Abstract

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/T_L) 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.
- undercooling,
- Nd-Fe-B-Si alloy,
- solidified structure