scholarly journals Thermal Stability and Phase Transformations of Multicomponent Iron-Based Amorphous Alloys

2020 ◽  
Author(s):  
Milica M. Vasić ◽  
Dušan M. Minić ◽  
Dragica M. Minić
Keyword(s):  
Thermal Stability ◽  
Phase Transformations ◽  
Amorphous Alloys ◽  
Iron Based

Thermal stability and glass forming ability of cast iron based CiPxB4.35 bulk amorphous alloys

2004 ◽  
Vol 201 (3) ◽  
pp. 476-481 ◽  
Author(s):  
M. Shapaan ◽  
A. Bárdos ◽  
J. Lábár ◽  
J. Lendvai ◽  
L. K. Varga
Keyword(s):  
Thermal Stability ◽  
Cast Iron ◽  
Amorphous Alloys ◽  
Glass Forming Ability ◽  
Bulk Amorphous Alloys ◽  
Glass Forming ◽  
Iron Based

Environmental Testing of Iron-Based Amorphous Alloys

2008 ◽  
Vol 39 (2) ◽  
pp. 225-234 ◽  
Author(s):  
Raul B. Rebak ◽  
S. Daniel Day ◽  
Tiangan Lian ◽  
Phillip D. Hailey ◽  
Joseph C. Farmer
Keyword(s):  
Amorphous Alloys ◽  
Environmental Testing ◽  
Iron Based

scholarly journals The researches of influence of alloying on thermal stability and process of senescence of amorphous alloys

2011 ◽  
Vol 15 (2) ◽  
Author(s):  
V. I. Lysov ◽  
T. L. Tsaregradskya ◽  
O. V. Turkov ◽  
G. V. Saenko
Keyword(s):  
Thermal Stability ◽  
Amorphous Alloys

Combinatorial Searching for Ni-Nb-Zr Amorphous Alloys as Glass Lens Molding Die Materials

2010 ◽  
Vol 447-448 ◽  
pp. 661-665 ◽  
Author(s):  
Junpei Sakurai ◽  
Mitsuhiro Abe ◽  
Masayuki Ando ◽  
Seiichi Hata
Keyword(s):  
Thermal Stability ◽  
Amorphous Alloys ◽  
Plasma Deposition ◽  
X Ray Diffraction ◽  
High Fracture ◽  
Thermal Stabilities ◽  
Suitable Material ◽  
Die Materials ◽  
Glass Lens ◽  
Lens Molding

This paper presents a search for Ni-Nb-Zr amorphous alloys for application as glass lens molding die materials. To efficiently screen candidate materials, we employed the combinatorial method partially to evaluate thermal stability. First, compositionally spread Ni-Nb-Zr libraries were fabricated by combinatorial arc plasma deposition (CAPD). In order to evaluate the high thermal stability, Ni-Nb-Zr amorphous samples in the libraries were annealed at 723K, the molding temperature for glass lens, for various times in vacuum. Phases in the annealed samples were identified by X-ray diffraction. From XRD identification, candidate amorphous samples with high thermal stabilities were screened. Sputtered samples with the same compositions as the candidate amorphous samples were then fabricated. Other desired properties for glass lens molding die materials, such as mechanical strength, machinability and anti-sticking properties, were evaluated. These investigations revealed Ni36Nb39Zr25 to be a suitable material for a new glass lens molding die. This material exhibited a high fracture stress f of 1.3 GPa, good heat resistance, good machinability, and excellent anti-sticking properties to molten glass.

scholarly journals Thermal Stability of Field- and Stress-Induced Anisotropy in Nanocrystalline Fe-Based and Amorphous Co-Based Alloys

1999 ◽  
Vol 32 (1-4) ◽  
pp. 281-287 ◽  
Author(s):  
N. V. Dmitrieva ◽  
V. A. Lukshina ◽  
G. V. Kurlyandskaya ◽  
A. P. Potapov
Keyword(s):  
Thermal Stability ◽  
Magnetic Anisotropy ◽  
Amorphous Alloys ◽  
Nanocrystalline Alloy ◽  
Induced Anisotropy ◽  
External Effects ◽  
Nanocrystalline And Amorphous ◽  
Induced Magnetic Anisotropy ◽  
Stress Induced Anisotropy ◽  
Thermal Stability Of

Thermal stability of induced magnetic anisotropy (IMA) was studied in a course of subsequent annealings without any external effects for already field- or stress-annealed specimens of the nanocrystalline Fe73.5Cu1Nb3Si13.5B9 and amorphous Fe3Co67Cr3Si15B12 alloys. For these alloys the dependence of IMA thermal stability on the magnitude of the IMA constant (Ku) and temperature of stress-annealing was investigated. For the nanocrystalline alloy thermal stability of field- and stress-induced anisotropy with identical Ku was compared. It was shown that nanocrystalline specimens with identical Ku values after field- or stress-annealing have identical thermal stability of IMA. This can point to a similarity of the mechanisms of IMA formation after field- or stress-annealings. Thermal stability of stress-induced anisotropy in the nanocrystalline alloy with Ku value less than 1000 J/m3 and the amorphous alloy with Ku less than 100 J/m3 depends on the value of Ku. For both stress-annealed nanocrystalline and amorphous alloys magnetic anisotropy induced at higher temperatures is more stable because more long-range and energy-taking processes take place at these temperatures.

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