在Fe-Zr-B-Nb非晶合金中B含量对晶化温度的影响  

Effects of Boron Content on Crystallization of Fe_(91-x)Zr_5B_xNb_4 Amorphous Alloys

作　　者：肖利[1] 华中[1] 

机构地区：[1]吉林师范大学物理学院,吉林四平136000

出　　处：《西南师范大学学报（自然科学版）》2005年第4期751-754,共4页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：吉林省科技发展计划资助项目(200405063)

摘　　要：用快冷法制备了Fe91-xZr5BxNb4(FZBN)合金,当5≤x≤30时,样品为非晶态.研究了B含量对非晶合金晶化的影响.当x≤20时,FZBN非晶以一次晶化的模式晶化;当20<x<30时,以共晶模式晶化;当x=30时,以多晶模式晶化,晶化产物为具有立方结构的Fe-Zr-B-Nb合金相,随着x的增加,FZBN非晶的晶化温度(Tx)增加.当x>20时,由于晶化模式的改变,Tx突然迅速增加.The effects of boron on crystallization of Fe91-xZr5Bx Nb4 （FZBN） amorphous alloys are studied in the B content （x） ranging from 5 to 30. Fully amorphous alloys of FZBN are prepared by melt-spinning in the range of 5≤x≤30. FZBN amorphous alloys crystallized in primary crystallization mode at low B content of x≤20, but in eutectic mode at high B range of 20〈x〈30 and in polymorphous mode at x=30. A metastable Fe-Zr-B-Nb cubic phase forms in polymorphous crystallization process. Crystallization temperature （Tx） of the FZBN amorphous alloys increases with increasing B content. When the B content exceeds 20, Tx increases quickly and suddenly, due to the change of crystallization mode.

关 键 词：FE基非晶合金 晶化 晶化温度 

分 类 号：O756[理学—晶体学]