Bulk Ferromagnetic (Fe0.87Co0.13)71.5-xTb3.5NbxB25 Glassy Alloys with a High Glass-Forming Ability

2005 ◽  
Vol 24-25 ◽  
pp. 423-426 ◽  
Author(s):  
Yi Long ◽  
Rong Chang Ye ◽  
Yong Qing Chang ◽  
Farong Wan
Keyword(s):  
Glass Forming Ability ◽  
Glass Forming ◽  
Glassy Alloys

Enhancement of glass-forming ability of CoFeBSiNb bulk glassy alloys with excellent soft-magnetic properties and superhigh strength

2010 ◽  
Vol 18 (10) ◽  
pp. 1876-1879 ◽  
Author(s):  
Qikui Man ◽  
Huaijun Sun ◽  
Yaqiang Dong ◽  
Baolong Shen ◽  
Hisamichi Kimura ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Glass Forming Ability ◽  
Soft Magnetic Properties ◽  
Soft Magnetic ◽  
Glass Forming ◽  
Glassy Alloys

Development of quaternary Fe–B–Y–Nb bulk glassy alloys with high glass-forming ability

2007 ◽  
Vol 22 (2) ◽  
pp. 471-477 ◽  
Author(s):  
Dong Ho Kim ◽  
Jin Man Park ◽  
Do Hyang Kim ◽  
Won Tae Kim
Keyword(s):  
Glass Phase ◽  
Crystallization Behavior ◽  
Alloy System ◽  
Glass Forming Ability ◽  
Maximum Diameter ◽  
Glass Forming ◽  
Glassy Alloys ◽  
The Stability ◽  
Nb Addition ◽  
Compressive Mechanical Property

The effects of niobium (Nb) addition on the glass-forming ability (GFA), crystallization behavior, and compressive mechanical property of iron (Fe)–boron (B)–yttrium (Y) alloys have been investigated. Among the (Fe71.2B24Y4.8)100−xNbx (x = 0, 2, 4, 6, 8) alloys investigated, (Fe71.2B24Y4.8)96Nb4 exhibits the highest GFA, enabling the formation of glassy rods with a maximum diameter of 7 mm, which is the largest among quaternary Fe-based alloys. The comparison of the crystallization behavior of the alloys shows that the formation of metastable Fe23B6 phase during crystallization in the (Fe71.2B24Y4.8)96Nb4 alloy can suppress the formation of other stable crystalline phases such as α-Fe, enhancing the stability of the glass phase. The present results show that the attainment of a significantly high GFA is possible even in a quaternary Fe-based alloy system by properly tailoring the competing crystalline phase by the modification of liquid chemistry.

Synthesis and properties of Cu–Zr–Ag–Al glassy alloys with high glass-forming ability

2008 ◽  
Vol 148 (1-3) ◽  
pp. 92-96 ◽  
Author(s):  
Wei Zhang ◽  
Qingsheng Zhang ◽  
Chunling Qin ◽  
Akihisa Inoue
Keyword(s):  
Glass Forming Ability ◽  
Glass Forming ◽  
Glassy Alloys

Magnetic properties of (Fe, Co)–B–Si–Nb bulk glassy alloys with high glass-forming ability

2005 ◽  
Vol 97 (10) ◽  
pp. 10F913 ◽  
Author(s):  
Kenji Amiya ◽  
Akiri Urata ◽  
Nobuyuki Nishiyama ◽  
Akihisa Inoue
Keyword(s):  
Magnetic Properties ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Glassy Alloys

High glass-forming ability and good mechanical properties of new bulk glassy alloys in Cu–Zr–Ag ternary system

2006 ◽  
Vol 21 (1) ◽  
pp. 234-241 ◽  
Author(s):  
W. Zhang ◽  
A. Inoue
Keyword(s):  
Mechanical Properties ◽  
Ternary System ◽  
Glassy Alloy ◽  
Alloy System ◽  
Supercooled Liquid ◽  
Glass Forming Ability ◽  
Liquid Region ◽  
Glass Forming ◽  
Glassy Alloys ◽  
Wide Range

The addition of Ag to Cu–Zr alloys is very effective for the increase in the stability of supercooled liquid as well as the glass-forming ability (GFA). The large supercooled liquid region (ΔTx) exceeding 60 K in Cu–Zr–Ag ternary system was obtained in a wide range of 25–55 at.% Cu, 40–65 at.% Zr, and 5–25 at.% Ag. The best GFA was obtained around Cu45Zr45Ag10, and glassy alloy rods with diameters up to 6.0 mm were formed by copper mold casting. The bulk glassy alloys exhibit good mechanical properties, i.e., compressive fracture strength of 1780–1940 MPa, Young's modulus of 106–112 GPa, compressive plastic elongation of 0.2–2.9%, and Vickers hardness of 534–599. The finding of the new Cu–Zr–Ag ternary glassy alloy system with high GFA and good mechanical properties is important for development and scientific studies of bulk glassy alloys.

Thermal conductivity of metallic glassy alloys and its relationship to the glass forming ability and the observed cooling rates

2008 ◽  
Vol 23 (8) ◽  
pp. 2283-2287 ◽  
Author(s):  
Dmitri V. Louzguine-Luzgin ◽  
Takanobu Saito ◽  
Junji Saida ◽  
Akihisa Inoue
Keyword(s):  
Thermal Conductivity ◽  
Glassy Alloy ◽  
Glass Forming Ability ◽  
Bulk Glass ◽  
Cooling Rates ◽  
Glass Forming ◽  
Glassy Alloys ◽  
Mold Casting ◽  
Cooling Behavior ◽  
The Relationship

In this work, we study the cooling behavior of several typical bulk glassy alloys on casing and present the relationship between the thermal conductivity of a glassy alloy and the cooling rate upon mold casting. The cooling rates obtained for Ti-, Zr-, Pd-, and Cu-based bulk glass forming alloys are found to scale with the thermal conductivities of the studied glassy alloys.

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