介绍了铁素体耐热钢的发展历程，综述了第四代耐热钢的国内外发展研究现状，重点介绍了 Co 和 B 元素对新型耐热钢组织性能的影响规律，指出优化合金元素含量提升新型耐热钢的蠕变性能和降低成本是未来发展方向。
A description about the development process of ferritic heat-resistant steels,and a summary for the research status of the development of the fourth generation heat-resistant steel are presented,focusing on the influence of Co and B elements on the new emerging heat-resistant steel′s microstructure and properties.A favorable proposal to enhance the creep resistance by optimizing alloying elements contents,and to reduce costs of modified heat-resistant steels in future work is presented.
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