T91铁素体耐热钢强化新途径  

New Strengthening Methods of T91 Ferritic Heat Resistant Steel

作　　者：宁保群[1,2] 严泽生[3] 付继成[3] 别利剑[1] 刘永长[2] 

机构地区：[1]天津理工大学材料科学与工程学院,天津300191 [2]天津大学材料科学与工程学院,天津300072 [3]天津钢管集团股份有限公司,天津300301

出　　处：《材料导报》2009年第7期72-76,共5页Materials Reports

基　　金：国家自然科学基金;上海宝钢集团公司资助重点项目(No.50834011);国家自然科学基金项目(No.20571055);天津市“材料物理与化学”重点学科资助项目

摘　　要：T91钢以其优异的综合性能成为高Cr铁素体耐热钢的代表钢种,被广泛应用于超临界发电厂锅炉管道上,同时也是开发更高使用温度的铁素体耐热钢材的研究基准。为进一步提高其耐热温度进而提高电厂热效率,在对T91钢组织结构及强化机理深入分析的基础上,探讨了形变热处理工艺通过优化组织来提高其性能的可行性,指出了高Cr铁素体耐热钢新的研究方向。T91 steel is representative of high Cr ferritic heat resistant steels, which has been recognized as the preferable materials and has been widely used in high temperature structural components in advanced power plants in view of good properties. Under the pressure of energy shortage and environment pollution, the study on increasing the thermal efficiency of generating station and heat resistant temperature of the boiler tube is also imperative. On the base of analysing the microstructure and strengthening mechanism, the feasibility of improving the mechanical properties through structural refinement in thermomechanical treatment are discussed. The new study directions in ferritic heat resistant steels are raised.

关 键 词：T91铁素体耐热钢 组织结构 强化机理 形变热处理工艺 

分 类 号：TG142.73[一般工业技术—材料科学与工程] TG457.11[金属学及工艺—金属材料]