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

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  • 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 aco·aS/aAl·ao and aCe/aAl 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.
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