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利用差示扫描量热仪(DSC)、X射线衍射(XRD)、透射电镜(TEM)研究了稀土元素(RE)对Al-Ni-Gd-Y非晶合金晶化行为的影响.Al-Ni-Gd-Y非晶合金的初始晶化温度随着稀土元素含量的增加而升高.在Al(88-x)Ni6Gd6Yx(x=1,2,3,4)系中,随着Y含量的增加,初始晶化产物由面心立方Al(fcc-Al)变成为fcc-Al+Al3Gd/Al3Y+未知相.研究了热处理工艺对Al86Ni8Gd3Y3合金力学性能的影响,其中,当Al86Ni8Gd3Y3在568 K下保温10 min时,其显微硬度及韧性较高,析出尺寸为1~3 nm的fcc-Al纳米晶颗粒.
The effects of rare earth elements (RE) on the crystallization behavior of Al-Ni-Gd-Y amorphous alloys were investigated by differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM) The initial crystallization temperature of -Gd-Y amorphous alloy increases with the increase of the content of rare earth elements.In the Al (88-x) Ni6Gd6Yx (x = 1,2,3,4) system, The initial crystallization product is changed from fcc-Al into fcc-Al + Al3Gd / Al3Y + unknowns. The effect of heat treatment on the mechanical properties of Al86Ni8Gd3Y3 alloy was studied. When Al86Ni8Gd3Y3 was incubated at 568 K At 10 min, the microhardness and toughness of fcc-Al nanocrystalline particles with the size of 1 ~ 3 nm were precipitated.