Phase diagram of the Fe –Co –R system with R ⩽33.3 at.% Sm0.5Nd0.5
-
B. W. Wang
,
W. L. Liu
Abstract
Phase equilibria of the Fe –Co –R system with R ⩽ 33.3 at.% Sm0.5Nd0.5 were determined in an isothermal section at 1073 K and a vertical section RFe2 –RCo2 by using optical microscopy, X-ray diffraction analysis, electron probe microanalysis, and differential thermal analysis techniques. There are seven intermetallic phases: (Sm, Nd) (Fe, Co)2, (Sm, Nd)(Fe, Co)3, (Sm, Nd)5(Fe, Co)17, (Sm, Nd)2(Fe, Co)7, (Sm, Nd)5(Fe, Co)19, (Sm, Nd)(Fe, Co)5, and (Sm, Nd)2(Fe, Co)17. The (Sm, Nd)5(Fe, Co)17 phase dissolves less than 4 at.% Co at 1073 K. However, the (Sm, Nd)2(Fe, Co)7 phase in R2(Fe1– xCox)7 alloys dissolves about 15 at.% Fe at 1073 K.
-
This work has been supported by the National Natural Science Foundation of China (59871030), the Natural Science Foundation of the Hebei Province (501027) and the Education Department of the Hebei Province.
References
1 Sabiryanov, R.F.; Jaswal, S.S.: Phys. Rev. B 58 (1998) 12071.10.1103/PhysRevB.58.12071Suche in Google Scholar
2 Guo, Z.J; Zhang, Z.D.; Wang, B.W.; Zhao, X.G.: Phys. Rev. B 61 (2000) 3519.10.1103/PhysRevB.61.3519Suche in Google Scholar
3 Guo, H.Q.; Gong, H.Y.; Yang, H.Y.; Li, Y.F.; Shen, B.G.; Li, R.Q.: Phys. Rev. B 54 (1996) 4107.10.1103/PhysRevB.54.4107Suche in Google Scholar
4 Wang, B.W.; Guo, Z.J.; Zhang, Z.D.; Zhao, X.G.; Busbridge, S.C.: J.Appl. Phys. 85 (1999) 2805.10.1063/1.369598Suche in Google Scholar
5 Wang, B.W.; Cheng, L.Z.; He, K.Y.: J. Appl. Phys. 80 (1996) 6903.10.1063/1.363761Suche in Google Scholar
6 Cataldo, L.; Lefevre, A.; Ducret, F.; Cohen-Adad, M.-Th.; Allibert, C.; Valignat, N.: J. Alloys Comp. 241 (1996) 216.10.1016/0925-8388(96)02308-0Suche in Google Scholar
7 Ge, W.Q.; Wu, C.H.; Chuang, Y.C.: Z. Metallkd. 84 (1993) 165.Suche in Google Scholar
8 Wu, C.H.; Chuang, Y.C., Jin, X.M; Guan, X.H.: Z. Metallkd. 83 (1992) 162.Suche in Google Scholar
9 Landgraf, F.J.G.; Schneider, G.; Villas-Boas, V.; Missell, F.P.: J. Less-Common Met. 163 (1990) 209.10.1016/0022-5088(90)90101-OSuche in Google Scholar
10 Schneider, G.; Henig, E.-Th.; Lukas, H.L.; Petzow, G.: J. Less-Common Met. 110 (1985) 159.10.1016/0022-5088(85)90317-0Suche in Google Scholar
11 Henig, E.-Th.; Grieb, B., in: G.J. Long; F. Grandjean (eds.), Supermagnets, hard magnetic materials, Kluwer Academic Publishers, London (1990) 171.10.1007/978-94-011-3324-1_9Suche in Google Scholar
12 Wu, C.H.; Xu, X.; Jin, X.M.; Zhuang, Y.Z., in: Proc. 5th nat. symp. phase diagrams, Wuhan (1988) 38 [in Chinese].Suche in Google Scholar
13 Stadelmaier, H.H.; Reinsch, B.; Petzow, G.: Z Metallkd. 89 (1998) 114.Suche in Google Scholar
14 Perry, A.J.: J. Less-Common Met. 51 (1977) 153.10.1016/0022-5088(77)90182-5Suche in Google Scholar
© 2002 Carl Hanser Verlag, München
Artikel in diesem Heft
- Frontmatter
- Articles/Aufsätze
- Phosphorus grain boundary diffusion and segregation in Fe–2.2 wt.% Si alloy
- Intermetallic compounds formed during the soldering reactions of eutectic Sn–9Zn with Cu and Ni substrates
- Thermal fatigue resistance in Pb-based solder alloys for electronic packaging
- Rolling and recrystallization textures in Al –Mg alloys
- Structures similar to a quasicrystal in technical aluminum alloys
- Processing map for hot working of hot rolled Mg– 11.5Li –1.5Al alloy
- Applications of computational thermodynamics
- Phase diagram of the Fe –Co –R system with R ⩽33.3 at.% Sm0.5Nd0.5
- Microstresses caused by uniaxial deformation and by mechanical surface treatments
- The influence of basic vs. rutile electrode on the composition of duplex stainless steel weldments
- Mixed mode I/III fracture toughness of Armco iron at 77 K
- Suitability assessment of replacement of conventional hot-working steels with maraging steel
- Suitability assessment of replacement of conventional hot-working steels with maraging steel
- Notifications/Mitteilungen
- Personal/Personelles
- Conferences/Tagungen
Artikel in diesem Heft
- Frontmatter
- Articles/Aufsätze
- Phosphorus grain boundary diffusion and segregation in Fe–2.2 wt.% Si alloy
- Intermetallic compounds formed during the soldering reactions of eutectic Sn–9Zn with Cu and Ni substrates
- Thermal fatigue resistance in Pb-based solder alloys for electronic packaging
- Rolling and recrystallization textures in Al –Mg alloys
- Structures similar to a quasicrystal in technical aluminum alloys
- Processing map for hot working of hot rolled Mg– 11.5Li –1.5Al alloy
- Applications of computational thermodynamics
- Phase diagram of the Fe –Co –R system with R ⩽33.3 at.% Sm0.5Nd0.5
- Microstresses caused by uniaxial deformation and by mechanical surface treatments
- The influence of basic vs. rutile electrode on the composition of duplex stainless steel weldments
- Mixed mode I/III fracture toughness of Armco iron at 77 K
- Suitability assessment of replacement of conventional hot-working steels with maraging steel
- Suitability assessment of replacement of conventional hot-working steels with maraging steel
- Notifications/Mitteilungen
- Personal/Personelles
- Conferences/Tagungen
