欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
将18Cr10NiNb耐热钢在650℃进行10,000h的时效试验,用扫描电镜和透射电镜分析了18Cr10NiNb奥氏体耐热钢的组织,通过热力学计算研究了500-1400℃碳、铌和氮含量的变化对平衡析出相的影响。结果表明：在18Cr10NiNb钢的时效过程中在晶内析出了富Nb的MX相,在晶界析出了富Cr的M_（23）C_6相。根据热力学计算,其平衡析出相为MX,M_（23）C_6和σ相。MX相和M_（23）C_6型碳化物的最高溶解温度分别约为1340℃和840℃。MX相的数量随C和Nb含量的提高而增加。σ相的数量随着C含量的提高而减少。添加0.2%的N元素后,MX相为含有N、Nb、Cr和少量C的复杂碳氮化物,且在其平衡组织中出现了Cr_2N相。
英文摘要：
Long-term aging at 650℃for the austenitic heat-resistant steel 18Cr10NiNb was conducted till 10,000 h.Effect of aging time on microstructure was investigated by SEM and TEM,and the effects of Nb,C,and N content on equilibrium phases from 500℃to 1400℃in 18Cr10NiNb steel have been calculated by using Thermo-Calc software.The results show that Nb-rich MX phase particles precipitate in the grains and Cr-rich M_（23）C_6 carbide mainly precipitates at the grain boundaries.The main equilibrium phases in18Cr10NiNb steel at 500-1400℃are MX,M_（23）C_6 andσ.The solution temperatures of MX and M_（23）C_6 are about 1340℃and 840℃,respectively.The amount of MX phase increases with increasing of C and Nb contents.The amount ofσphase decreases with increasing of C content.Adding 0.2%N in this the steel,MX phase contains N,Nb,Cr with a small amount of C,which is a complex carbon nitride and makes excellent strengthen effect.Cr_2N phase appears as one of the equilibrium phases in the steel at the same time.
同期刊论文项目
同项目期刊论文
The effect of nanostructural hierarchy on the mechanical properties of aluminium alloys during defor
First principles study of Al and Ni segregation to the alpha-Fe/Cu (100) coherent interface and thei
Theoretical prediction of mechanical stability of ferromagnetic FCC Fe-Cu alloys from first principl
Molecular Dynamics Study of the Response of Nanostructured Al/Ni Clad Particles System under Thermal
Strengthening effect of Cu-rich phase precipitation in 18Cr9Ni3CuNbN austenitic heat-resisting steel
Combination of TEM and 3D atom probe study on the microstructure and alloy carbide in a Nb-V micro-a
Comparative Study on Austenite Decomposition and Copper Precipitation during Continuously Cooling Tr
The precipitation strengthening behavior of Cu-rich phase in Nb contained advanced Fe-Cr-Ni type aus
Structure and elastic property of nanosized complex oxide particles in ferritic/martensitic alloy: A
The water effect on the structural, electronic and photocatalytic properties of graphitic carbon nit
Density functional theory study of the influence of Ti and V partitioning to cementite in ferritic s
3D atom probe characterization of temporal evolution of precipitates in aging Nb-V micro-alloyed ste
Compositional and structural characterization of alloyed carbide by 3D atom probe and high-resolutio
Effects of deuterium implantation and subsequent electron irradiation on the microstructure of Fe-10
期刊信息
位置：