Development of oxide dispersion strengthened vanadium alloy and its properties

Development of oxide dispersion strengthened vanadium alloy and its properties
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氧化物弥散强化钒合金的研制及其性能

DOI：
10.1016/s0022-3115(96)00469-2
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发表时间：
1996
期刊：
Journal of Nuclear Materials
影响因子：
3.1
通讯作者：
H. Kayano
H. Kayano
中科院分区：
工程技术2区
文献类型：
--
作者：
T. Shibayama;I. Yamagata;H. Kurishita;H. Kayano

文献摘要

被引文献

相似文献

采用粉末冶金方法成功制备了两种氧化物弥散强化(ODS)钒合金。用透射电子显微镜和维氏显微硬度计研究了V0.25Y_2O_3和V4Cr4Ti0.5Si0.5Al0.5Y0.25Y_2O_3中弥散颗粒的详细特征。用透射电子显微镜测量了制备的分散粒子的密度和尺寸分布，并在2073K下进行了热处理。在制备的两种合金中，Y203的平均尺寸为0.04μm，在V4Cr4Ti0.5Si0.5Al0.5Y0.25Y203中观察到以溶质原子为主的析出相。V0.25Y_2O_3和V4Cr4Ti0.5Si0.5Al0.5Y0.25Y_2O_3中弥散颗粒密度分别为6.6×10~(18)/m~3和2.3×10~(18)/m~3。2073K的热处理使两种合金都发生了再结晶，只有V4Cr4Ti0.5Si0.5Al0.5Y0.25Y，03合金中的析出物消失，从而降低了合金的颗粒密度。
Two kinds of oxide dispersion strengthened (ODS) vanadium alloys have been successfully fabricated by powder metallurgy. The detailed characteristics of the dispersion particles in a V0.25Y2O3and a V4Cr4Ti0.5Si0.5AI0.5Y0.25Y2O3were examined by transmission electron microscopy (TEM) and Vickers micro hardness test. The density and size distribution of the dispersion particles were measured as fabricated and annealed at 2073 K by using TEM. In both alloys as fabricated, the mean Y203 size is 0.04 μm and precipitates which mainly consists of the solute atoms were observed in the V4Cr4Ti0.5Si0.5A10.5Y0.25Y203. The density of dispersion particles in V0.25Y2O3and V4Cr4Ti0.5Si0.5Al0.5Y0.25Y203 is 6.6 X 1018/ m3and 2.3 X 1018/ m3respectively. The annealing at 2073 K caused recrystallization in both alloys and a decrease the density of particles in only the V4Cr4Ti0.5Si0.5A10.5Y0.25Y,03 alloy due to disappearance of the precipitates.