Thermodynamics and the Glass Forming Ability of Alloys

Tang, Chengying; Zhou, Huaiying

doi:10.5772/20803

Cited by 7 publications

(2 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The T0 curves between the liquidus and solidus phase give the minimum undercooling necessary for the liquid to solidify without partitioning [13,107]. Where the T0 curves extend below the glass transition temperature, the glassy phase becomes more stable than the solidsolution crystalline phase of that composition [108][109][110]. This allows the material to be cooled below Tg while avoiding crystallization to the solid-solution phase, which requires no long-range diffusion.…”

Section: Thermodynamic Approach To Gfa Predictionmentioning

confidence: 99%

Development of high Bs Fe–Ni-based metal amorphous nanocomposite by optimization of glass-forming ability

Krimer

Barberis

McHenry

2021

Journal of Materials Research

View full text Add to dashboard Cite

Section: Thermodynamic Approach To Gfa Predictionmentioning

confidence: 99%

Development of high Bs Fe–Ni-based metal amorphous nanocomposite by optimization of glass-forming ability

Krimer

Barberis

McHenry

2021

Journal of Materials Research

View full text Add to dashboard Cite

“…For this reason, a compromise has to be found between GFA and the magnetic properties. In order to facilitate the planning of the chemical composition of alloys, thermodynamic calculations are used to determine the values of parameters such as Gibbs free energy of mixing (∆G mix ) or Gibbs free energy of amorphous phase formation (∆G amorph ), which are crucial for GFA [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cu Content on Structure, Thermal Stability and Magnetic Properties in Fe72−xNi8Nb4CuxSi2B14 Alloys

et al. 2021

View full text Add to dashboard Cite

The effect of substitution of Fe by Cu on the crystal structure and magnetic properties of Fe72−xNi8Nb4CuxSi2B14 alloys (x = 0.6, 1.1, 1.6 at.%) in the form of ribbons was investigated. The chemical composition of the materials was established on the basis of the calculated minima of thermodynamic parameters: Gibbs free energy of amorphous phase formation ΔGamorph (minimum at 0.6 at.% of Cu) and Gibbs free energy of mixing ΔGmix (minimum at 1.6 at.% of Cu). The characteristic crystallization temperatures Tx1onset and Tx1 of the alpha-iron phase together with the activation energy Ea for the as-spun samples were determined by differential scanning calorimetry (DSC) with a heating rate of 10–100 °C/min. In order to determine the optimal soft magnetic properties, the wound cores were subjected to a controlled isothermal annealing process in the temperature range of 340–640 °C for 20 min. Coercivity Hc, saturation induction Bs and core power losses at B = 1 T and frequency f = 50 Hz P10/50 were determined for all samples. Moreover, for the samples with the lowest Hc and P10/50, the magnetic losses were determined in a wider frequency range 50 Hz–400 kHz. The real and imaginary parts of the magnetic permeability µ′, µ″ along with the cut-off frequency were determined for the samples annealed at 360, 460, and 560 °C. The best soft magnetic properties (i.e., the lowest value of Hc and P10/50) were observed for samples annealed at 460 °C, with Hc = 4.88–5.69 A/m, Bs = 1.18–1.24 T, P10/50 = 0.072–0.084 W/kg, µ′ = 8350–10,630 and cutoff frequency at 8–9.3 × 104 Hz. The structural study of as-spun and annealed ribbons was carried out using X-ray diffraction (XRD) and a transmission electron microscope (TEM).

show abstract

Bulk Metallic Glass

Behera¹

2021

Advanced Materials

View full text Add to dashboard Cite

Thermodynamics and the Glass Forming Ability of Alloys

Cited by 7 publications

References 80 publications

Development of high Bs Fe–Ni-based metal amorphous nanocomposite by optimization of glass-forming ability

Development of high Bs Fe–Ni-based metal amorphous nanocomposite by optimization of glass-forming ability

Influence of Cu Content on Structure, Thermal Stability and Magnetic Properties in Fe72−xNi8Nb4CuxSi2B14 Alloys

Bulk Metallic Glass

Contact Info

Product

Resources

About