稀土元素提高 Fe-Cr-Ni 系耐热合金高温性能的研究概况

REVIEW OF STUDY ON RARE EARTH ELEMENTS IMPROVING Fe-Cr-Ni HEAT-RESISTANCE ALLOY'S HIGHTEMPERATURE PROPERTIES

介绍了稀土元素在耐热合金中的应用和发展，指出稀土元素明显改善Ｃｒ２Ｏ３膜的结构，细化Ｃｒ２Ｏ３膜的晶粒，改变Ｃｒ２Ｏ３膜的生长取向，增强Ｃｒ２Ｏ３膜的粘附性及其抗剥落、破坏的能力。对稀土在本合金中的作用机理进行了概括和综述，并提出了自己的看法。

This paper introduced the application and development of rare-earth used in heatresistance steel.It showed that rare-earth elements can strengthly improve the construction of Cr 2O 3 oxide scale,fine its grain size,modify its growth direction,improve its adhesion properities and strengthen its properities of resistance to skining and destroying.The mechanism of rareearth was summarized in order to discuss the application of rare-earth to Fe-Cr-Ni heat-resistance steel.