摘要
利用X射线衍射(XRD)和透射电镜(TEM)研究了V,Cr对快速凝固Al Ti Fe合金组织及显微硬度的影响。结果表明:Al Ti Fe (V,Cr)合金急冷态组织均为过饱和Al基固溶体;300℃×10h处理后,Al 2 5Ti 2 5Fe 2 5Cr合金析出Al3Ti和Al13Cr2相;400℃×10h处理后,Al Ti Fe (V,Cr)合金均析出Al13Fe4相。随退火温度的升高,快速凝固Al 2 5Ti 2 5Fe 2 5V合金的显微硬度略有下降,快速凝固Al 2 5Ti 2 5Fe 2 5Cr合金的显微硬度略有上升,表明V,Cr元素的加入有利于快凝Al 2 5Ti 2 5Fe合金显微硬度的增加。
Rapidly solidified Al25Ti25Fe, Al25Ti25Fe25V and Al25Ti25Fe25Cr(atom fraction, %)alloys were produced by melt spinning Asspun and asannealed microstructures were analyzed by Xray diffraction(XRD)and transmission electron microscopy(TEM) The microhardness of the alloys at different annealing temperature were measured by means of Vickers hardness meter The results obtained indicate that the microstructures of the asspun alloys are in the super saturated solid solution After annealing at 300 ℃ for 10 h, two kinds of dispersive phases Al3Ti and Al13Cr2 are precipitated in the structure of the meltspun Al25Ti25Fe25Cr alloy Fe element soluble in aluminum of the meltspun Al25Ti25Fe25(V,Cr) alloy is precipitated in the form of phase Al13Fe4 after being annealed at 400 ℃ for 10 h The microhardness of the meltspun Al25Ti25Fe25V alloy decreases a little and microhardness of the meltspun Al25Ti25Fe25Cr alloy increases a little with the increase of the annealing temperature The addition of V,Cr element is beneficial to the thermal stability of the alloy and greatly improve the microhardness of the Al25Ti25Fe
出处
《中国稀土学报》
CAS
CSCD
北大核心
2002年第z2期137-140,共4页
Journal of the Chinese Society of Rare Earths
基金
安徽省教育厅自然科学基金资助项目(2002kj245)
