铜含量对T122耐热钢中δ铁素体含量及力学性能的影响  

Effect of Copper Content on δ-Ferrite Content and Mechanical Properties of T122 Heat Resistant Steel

作　　者：包汉生[1] 谭舒平[1,2] 程世长[1] 刘正东[1] 

机构地区：[1]钢铁研究总院,北京100081 [2]哈尔滨工业大学航天学院,黑龙江哈尔滨150001

出　　处：《钢铁研究学报》2010年第2期28-33,共6页Journal of Iron and Steel Research

基　　金：国家863高技术研究发展计划资助项目(2006AA03Z513)

摘　　要：研究了T122铁素体型耐热钢中铜含量0-1.77%变化对组织与性能影响,结果表明铜含量增加,使钢中δ铁素体含量下降,钢的室温和高温强度明显提高。持久强度和长时时效后高温强度也随铜含量增加,明显提高。含铜0.90%时,钢的强度和塑性匹配最佳。The effect of copper content varying from 0% to 1.77% on the microstructure and properties of T122 heat resistant steel was investigated.The results show that the increase of copper content in the steel leads to the decrease of δ-ferrite amount.The strength at room temperature and high temperature increase obviously.Creep rupture strength and high temperature strength after aging are improved evidently with the increase of copper content,and steel with copper 0.90% content have the optimal matching between strength and plasticity.

关 键 词：T122耐热钢 铜含量 Δ铁素体 强度 

分 类 号：TG142.73[一般工业技术—材料科学与工程]