Role of a complex carbonitride of niobium and vanadium in creep strength of 9% Cr ferritic steels
Role of a complex carbonitride of niobium and vanadium in creep strength of 9% Cr ferritic steels
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作用%20of%20a%20complex%20碳氮化物%20of%20铌%20and%20钒%20in%20蠕变%20强度%20of%209%%20Cr%20铁素体%20钢
DOI：
10.1016/0956-716x(91)90301-g
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
K. Itoh
中科院分区：
文献类型：
--
作者：
K. Tokuno;K. Hamada;R. Uemori;T. Takeda;K. Itoh
铁素体钢中Nb和V的络合沉淀被认为是位错滑动的强大障碍。在之前的报告中，作者研究了9% Cr铁素体钢中Nb和V的复合沉淀，并表明回火过程中形成了片状V-氮化物，并粘附在球形Nb （C，N）上。这些形状奇特的沉淀物可能在高温变形（如蠕变）过程中捕获位错。本文研究了复合碳氮化物的大小对9% Cr铁素体钢蠕变强度的影响。碳氮化物的大小随N的变化而变化。
Complex precipitates of Nb and V in ferritic steels have been considered to act as strong obstacles against dislocation glide. In the previous report, the authors investigated a complex precipitate of Nb and V in 9% Cr ferritic steel and showed that plate-like V-nitrides were formed adhering to spherical Nb (C,N) during tempering. These peculiar shaped precipitates are likely to trap dislocations during high temperature deformation such as creep. In this paper, the effect of the sizes of the complex carbonitrides on the creep strength of 9% Cr ferritic steels was investigated. The sizes of the carbonitrides were varied by changing the amount of N.