一种新型铁素体耐热钢

A New Ferritic Heat-resistant Steel

针对一种w(Cr)=15%(简称15%Cr)的新型铁素体耐热钢展开文献调研和分析,摸清该新型铁素体耐热钢的的设计思路、强化机理、组织性能和研究现状。结果表明:15%Cr铁素体耐热钢具有较好的组织稳定性,比传统的w(Cr)=9%~12%的铁素体钢具有更优的持久强度和抗蒸汽氧化性能,有很大潜力成为用于650℃超超临界火电机组高温部件的候选钢种。

Literature researches and analyses were conducted on a new kind of w(Cr)=15%(15%Cr)ferritic heat-resistant steel with the purpose of finding out the design ideas,strengthening mechanism,microstructure and properties,and the research status.Results show that the 15%Cr ferritic heat-resistant steel has better microstructure stability,with creep rupture strength and steam oxidation resistance higher than traditional w(Cr)=9%12%ferritic steels,which may be taken as a potential steel for high-temperature components of 650℃ultra-supercritical thermal power plants.