Study of phase equilibria, diagrams and transformations in the Fe-Co-Si ternary system

被引：2
作者：
Yang, Mujin [1 ,2 ]
Wang, Cuiping [1 ,2 ]
Yang, Shuiyuan [1 ,2 ]
Wu, Chao [1 ,2 ]
Chen, Dichun [3 ]
Shi, Zhan [1 ,2 ]
Liu, Xingjun [1 ,2 ]
机构：
[1] Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Fujian Prov Key Lab Mat Genome, Xiamen 361005, Peoples R China
[3] Luoyang Ship Mat Res Inst, Xiamen Branch, Xiamen 361005, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2017年 / 201卷
基金：
中国国家自然科学基金;
关键词：
Phase equilibrium; Magnetic transition; Order-disorder transition; Martensitic transformation; Microstructure; MARTENSITIC-TRANSFORMATION; HEAT-TREATMENTS; COBALT;
D O I：
10.1016/j.matchemphys.2017.08.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A 1000 degrees C isothermal phase diagram in the total composition range of the Fe-Co-Si ternary system is constructed featuring the interconnected epsilon-(Fe,Co)Si, large bcc-structure (alpha Fe), and fcc-structure (gamma Fe,alpha Co) phases. In addition, a vertical magnetic plus ordering transition phase diagram of Fe80-xCoxSi20 allosy is also constructed. It is shown that the magnetic transition (D0(3)(ferro./para.)) temperature increases with the Co concentration and reaches a maximum value (845 degrees C) at 50 at. % Co in the investigated Fe80-xCoxSi20 alloys. Meanwhile, the B2/D0(3) ordering transition temperature versus Co content dependence exhibits an initial slight rise followed by a gradual decrease to similar to 67 at. % Co. Furthermore, a fcc/bcc martensitic transformation was revealed in several Co-rich ternary alloys under study. The resulting lath martensitic microstructures of the studied alloys include numerous twins and dislocations defects, revealing a similarity with the FeNi-based alloy system. (C) 2017 Published by Elsevier B.V.
引用
收藏
页码：180 / 188
页数：9
相关论文
共 38 条
[1]   Magnetic properties of undoped and Co-doped n-type β-FeSi2.5 single crystals [J].
Arushanov, E ;
Ivanenko, L ;
Eckert, D ;
Behr, G ;
Rössler, UK ;
Müller, KH ;
Schneider, C ;
Schumann, J .
JOURNAL OF MATERIALS RESEARCH, 2002, 17 (11) :2960-2965
[2]   MAGNETIC DISORDER AS A FIRST-ORDER PHASE TRANSFORMATION [J].
BEAN, CP ;
RODBELL, DS .
PHYSICAL REVIEW, 1962, 126 (01) :104-+
[3]   Mechanochemical synthesis and properties of thermoelectric material β-FeSi2 [J].
Belyaev, E ;
Mamylov, S ;
Lomovsky, O .
JOURNAL OF MATERIALS SCIENCE, 2000, 35 (08) :2029-2035
[4]   Determination of interface growth with atomic resolution in FeCo-Si multilayers [J].
Cho, SJ ;
Krist, T ;
Mezei, F .
THIN SOLID FILMS, 2003, 434 (1-2) :136-144
[5]   Structure-properties relationship in TRIP steels containing carbide-free bainite [J].
De Cooman, BC .
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 2004, 8 (3-4) :285-303
[6]  
Fedorova L, 1975, AKAD NAUK SSSR NEORG, V11, P373
[7]  
FIEDLER HC, 1970, METALL TRANS, V1, P1036
[8]  
Finney M., 1993, MRS P, P173
[9]  
Gel'D P., 1987, SOV PHYS DOKL, P1006
[10]  
GelD P., 1986, SOV PHYS DOKL, P568
1234