新型高强抗热腐蚀定向凝固高温合金DZ409  

Development of a new high strength and hot corrosion resistant directionally solidified superalloy DZ409

作　　者：李俊涛[1,2] 燕平[1,2] 吴剑涛[1,2] 董建新[3] 王磊 曾强[1,2] 

机构地区：[1]钢铁研究总院高温材料所,北京100081 [2]北京钢研高纳科技股份有限公司,北京100081 [3]北京科技大学材料科学与工程学院,北京100083 [4]东北大学材料科学与工程学院,辽宁沈阳110819

出　　处：《钢铁研究学报》2016年第2期38-44,共7页Journal of Iron and Steel Research

基　　金：北京市科技计划资助项目(Z131100006413005)

摘　　要：在高温合金设计理论的指导下,综合考虑重型燃机叶片用耐热腐蚀定向凝固高温合金对持久强度、热腐蚀抗力、长期组织稳定性等多方面的要求,设计出7种成分的合金。通过热力学平衡相和电子空位数计算,优选3种成分合金开展力学性能、抗热腐蚀、组织稳定性等研究,进行试验筛选工作,研制出新型抗腐蚀定向凝固高温合金DZ409合金。DZ409合金具有良好的抗腐蚀性能、组织稳定性以及高的力学性能,可用作重型燃机的叶片材料。Based on the principles of superalloy design,seven alloy compositions for heavy IGT（Industry Gas Turbine）blades application were designed to meet the demand for alloy＇s properties,such as stress rupture,hot corrosion resistance,stability of microstructure.Through thermodynamic equilibrium phase calculation and electron vacancy number calculation of woodyatt method,three kinds of test alloys were studied as primary selections.After testing of mechanical properties,hot corrosion resistance,a new kind of hot resistant directionally solidified superalloy.DZ409 has high strength,outstanding hot corrosion resistance and microstructure stability properties,and can be used for manufacturing heavy IGT blades.

关 键 词：定向凝固高温合金 力学性能 抗热腐蚀性能 长期组织稳定性 重型燃机 

分 类 号：TG132.3[一般工业技术—材料科学与工程]