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本文讨论了稀土元素在铁和钢中的合金化作用。稀土元素在铁中的固溶度很小,但有强烈的晶界偏聚的倾向。它们影响到钢中的相变,也影响到转变产物的形貌,特别是与晶界性质密切相关的那些性能。
This article discusses the alloying of rare earth elements in iron and steel. The solubility of rare earth elements in iron is small, but there is a strong tendency of the grain boundaries segregation. They affect the phase transformation in steel and also affect the morphology of the transformation products, especially those closely related to the nature of the grain boundaries.