Comparison of the thermomagnetic and thermal effects during nanocrystallization of amorphous Fe76.5-xCu1NbxSi13.5B9 alloys

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	Comparison of the thermomagnetic and thermal effects during nanocrystallization of amorphous Fe76.5-xCu1NbxSi13.5B9 alloys
	B. Varga; J. Takacs; A. Lovas; P. Kamasa; F. Zhou; J. Vandlik
	1998
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	14 期号:4 页码:323-326
摘要	The results of thermomagnetic (TM) and calorimetric (DSC) measurements have been compared in order to clarify some details of the mechanism of nanophase-formation from Finemet-type precursors with different Nb contents. It was found that the main features of the DSC thermograms (shape, relative separation and amplitude of the exothermic peaks characteristic for the precipitation of the Fe-(Si) solid solution and the transition metal borides) depend mainly on the composition of the precursor glass, and are only slightly affected by the heating rate between 20 and 80 K/min. The amplitude of the uprise of the magnetization in the TM curves (attributed to the precipitation of bcc-Fe(Si) and borides) decreases with increasing Nb-content. The Curie-temperature of the precursor glasses, T-c(am(1)), the remainder amorphous phases, T-c(am(2)) and the bcc nanophase, T-c(n-Fe) are determined from the thermomagnetic curves. The shape of the TM curves is interpreted on the basis of the reactions describing the crystallization of the hypo-eutectic Fe-B glasses.
部门归属	tech univ budapest, dept mech engn technol, h-1111 budapest, hungary. hungarian acad sci, solid state phys res inst, h-1525 budapest, hungary. chinese acad sci, inst met res, state key lab rsa, shenyang 110015, peoples r china. hungarian acad sci, inst sci mat, h-1525 budapest, hungary.;varga, b (reprint author), tech univ budapest, dept mech engn technol, bertalan l utca 2, h-1111 budapest, hungary
关键词	Thermodynamic Functions Association Model Liquid Alloys Crystallization Temperature
URL	查看原文
WOS记录号	WOS:000074996700007
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37796
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	B. Varga,J. Takacs,A. Lovas,et al. Comparison of the thermomagnetic and thermal effects during nanocrystallization of amorphous Fe76.5-xCu1NbxSi13.5B9 alloys[J]. Journal of Materials Science & Technology,1998,14(4):323-326.
APA	B. Varga,J. Takacs,A. Lovas,P. Kamasa,F. Zhou,&J. Vandlik.(1998).Comparison of the thermomagnetic and thermal effects during nanocrystallization of amorphous Fe76.5-xCu1NbxSi13.5B9 alloys.Journal of Materials Science & Technology,14(4),323-326.
MLA	B. Varga,et al."Comparison of the thermomagnetic and thermal effects during nanocrystallization of amorphous Fe76.5-xCu1NbxSi13.5B9 alloys".Journal of Materials Science & Technology 14.4(1998):323-326.