热处理对铁基超微晶合金居里点的影响  

INFLUENCE OF HEAT TREATMENT ON CURIE TEMPERATURE OF Fe-BASED NANOCRYSTALLINE ALLOY

作　　者：陈文智[1] 李志华[1] 张国祥[1] 

机构地区：[1]冶金部钢铁研究总院,冶金部钢铁研究总院精研部

出　　处：《钢铁研究学报》1994年第3期33-36,共4页Journal of Iron and Steel Research

摘　　要：利用Ｈｏｐｋｉｎｓｏｎ效应研究了铁基超微晶合金Ｆｅ＿７３．５Ｃｕ＿１Ｎｂ＿３Ｓｉ＿１３．５Ｂ＿９经不同热处理后的居里点变化。当合金在５００℃以上退火１ｈ或者在５５０℃退火１０ｍｉｎ时出现晶化相。当退火温度由５１０℃上升到５６０℃时，合金晶化相的居里，点由５１０℃升高到５７０℃；当在５５０℃保温时间由１０ｍｉｎ延长到１５０ｍｉｎ时，居里点由５００℃升高到５５０℃。同时，晶化使合金中剩余非晶相的居里点发生起伏。这些变化是由于合金晶化过程中Ｃｕ，Ｎｂ，Ｂ原子扩散和相结构变化所造成的。The changes of the curie temperature of annealed nanocrystalline alloy Fe_73.5 Cu_1 Nb_3 Si_13.5 B_9 were investigated by means of Hopkinson effect.crystalline phase appeared when the alloy was annealed above 500 O for 1h or at 550 C for more than 10 min. As annealing temperature rose from 510 C to 560℃,Curie ten- perature of the crystalline phase rose fron、510 ℃ to 570 C;when annealing time lasted from 10 min。to l50 min. ,Curie ternperature went up from 500℃ to 550℃,Meanwhile,Curie temperature of rernaining amorphous phase changed too. All thexe changes were due to the adustmet of phase structure and diffusion of Cu, Nb,B atoms in the alloy

关 键 词：超微晶合金 居里点 热处理 

分 类 号：TG166.7[金属学及工艺—热处理]