23CoNi钢中有序相的形成及其对力学性能的影响  

Formation of Order Phase in 23CoNi Steel and Its Effects on Mechanical Properties

作　　者：王俊丽[1] 王瑞[2] 李志[1] 钟平[1] 

机构地区：[1]北京航空材料研究院,北京100095 [2]东北特殊钢集团有限责任公司技术中心,辽宁抚顺113001

出　　处：《材料工程》2007年第5期7-10,共4页Journal of Materials Engineering

摘　　要：利用TEM观察到23CoNi钢基体中析出B2型有序相,细小而弥散,其点阵常数与马氏体基体相近。在485-600℃回火,有序相随回火温度升高而长大。有序相的析出主要与Ni,Al,Ti合金元素的含量有关。该炉次钢在440-490℃回火保持高的拉伸强度,应与有序相的析出有关。The small and dispersed order phase B2 was observed in 23CoNi steel by TEM. The lattice parameters of the phase were close to that of matrix in the alloy. Tempering at 485-600℃, the size of order phase grew up as tempering temperature going up. The main reason of the formation of the order phase was related to the content of Ni, Al and Ti. High tensile strength was kept as tempered from 440℃ to 490℃ in the heat, this phenomenon may be attributed to the formation of the order phase.

关 键 词：23CoNi钢 有序相 力学性能 

分 类 号：TG111.5[金属学及工艺—物理冶金]