Effects of Rare Earth Metal on the Properties of Steels and Optimization Control

Lin Qin; Ye Wen; Du Yuansheng; Yu Zongsen

doi:10.13374/j.issn1001-053x.1992.02.017

Volume 14 Issue 2

Oct. 2021

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Lin Qin, Ye Wen, Du Yuansheng, Yu Zongsen. Effects of Rare Earth Metal on the Properties of Steels and Optimization Control[J]. Chinese Journal of Engineering, 1992, 14(2): 225-231. doi: 10.13374/j.issn1001-053x.1992.02.017

Citation:

Lin Qin, Ye Wen, Du Yuansheng, Yu Zongsen. Effects of Rare Earth Metal on the Properties of Steels and Optimization Control[J]. Chinese Journal of Engineering, 1992, 14(2): 225-231. doi: 10.13374/j.issn1001-053x.1992.02.017

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Effects of Rare Earth Metal on the Properties of Steels and Optimization Control

doi: 10.13374/j.issn1001-053x.1992.02.017

1. Dept. of Physical Chemistry;
2. Dept. of Materials Physics

Received Date: 1991-11-21
Available Online: 2021-10-16

Abstract

Abstract

When the ratio of RE/S in steel reachs to a certain value, for example RE/S =2.2 in 16Mn steel, RE/S = 2.0 in 20MnVB steel, RE/S = 1.5 in MnTiB steel, RE/S = 1.2 in 09CuPTi steel, the best effect purifying malden steel is obtained. The modification of oxides by RE addition is important to the improvement of fatigue resistance and it depends on the ratio of a_co·a_S/a_Al·a_o and a_Ce/a_Al in steel. When RE/S ratio is 2.5, 1.8 or 1.5 in steel 16Mn or 20MnVB, 25MnTiB and 09CuPTi respectively, the all sulfide and oxide modification will be achieved. Therefore the optimal ratio range of RE/S in steel must be controlled.
- rare earth,
- rare earth treatment of steel,
- optimization control,