A new temperature versus heating rate transformation (T-HR-T) diagram: Application to study the crystallization behaviour of Fe67.5Co15Nb1.5B16 metallic glass

Suriñach, S.; Baró, María Dolors; Diego, J. A. de; Clavaguera, N.; Clavaguera-Mora, M.T.

doi:10.1016/0956-7151(92)90197-m

Cited by 21 publications

(3 citation statements)

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“…By a different procedure, TemperatureHeating (Cooling) Rate-Transformation or T-HR-T (T-CR-T) curves are constructed as the temperature versus heating (cooling) rate for a fixed value of x. [5][6][7][8][9] In this paper, the accuracy in the determination of the kinetic parameters for the primary crystallization of an amorphous sample is discussed with reference to Ga 20 Te 80 alloys, obtained by rapid solidification. The investigation by means of DSC and x-ray diffraction (XRD) allowed characterization of two main crystallization processes.…”

Section: Introductionmentioning

confidence: 99%

Accuracy in the experimental calorimetric study of the crystallization kinetics and predictive transformation diagrams: Application to a Ga–Te amorphous alloy

1998

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The uncertainties inherent to experimental differential scanning calorimetric data are evaluated. A new procedure is developed to perform the kinetic analysis of continuous heating calorimetric data when the heat capacity of the sample changes during the crystallization. The accuracy of isothermal calorimetric data is analyzed in terms of the peak-to-peak noise of the calorimetric signal and base line drift typical of differential scanning calorimetry equipment. Their influence in the evaluation of the kinetic parameter is discussed. An empirical construction of the time-temperature and temperature-heating rate transformation diagrams, grounded on the kinetic parameters, is presented. The method is applied to the kinetic study of the primary crystallization of Te in an amorphous alloy of nominal composition Ga 20 Te 80 , obtained by rapid solidification.

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Section: Introductionmentioning

confidence: 99%

Accuracy in the experimental calorimetric study of the crystallization kinetics and predictive transformation diagrams: Application to a Ga–Te amorphous alloy

1998

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“…Clavaguera-Mora and co-workers (129,130) have developed a new temperature vs heating rate transformation diagram and have used it to establish the crystallization behavior of Fe67.5Coi5Nbi 5Bi6 metallic glass. Mukdeeprom-Burckel and Edwards (131) constructed plots of vapor pressure as functions of temperature for the system GaTe-Ga, using the simultaneous Knudsen and Torsion effusion methods.…”

Section: Inorganic Compoundsmentioning

confidence: 99%

Thermal Analysis

Dollimore¹

1994

Anal. Chem.

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“…They have led to the determination of temperature-time transformation, T-T-T, curves for the description of the isothermal crystallization reaction since the work of Uhlmann [1]. Other transformation diagrams have been introduced [2] to describe non-equilibrium crystallization under continuous heating regime, namely the T-HR-T (temperature-heating rate-transformation) diagram.…”

Section: Introductionmentioning

confidence: 99%

Amorphous metal nanocrystallization changes due to mechanical alloying

Bonastre

Escoda

Hernando

et al. 2010

Phys. Status Solidi (c)

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A detailed knowledge of the temperature dependence of the transformed fraction is an essential issue in the development of nanomaterials and the control of their microstructure. In technical applications, the thermal stability of nanocrystalline alloys is a problem of fundamental interest in order to determine the useful working temperature ranges. The transformation diagrams give information relative to the stability and applicability of these materials. In this work the temperature–heating rate transformation diagram of a Co‐rich alloy obtained by mechanical alloying or rapid solidification was built using an isoconversional approach in order to obtain a good prediction even for low transformed fractions (0.1). (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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A new temperature versus heating rate transformation (T-HR-T) diagram: Application to study the crystallization behaviour of Fe67.5Co15Nb1.5B16 metallic glass

Cited by 21 publications

References 7 publications

Accuracy in the experimental calorimetric study of the crystallization kinetics and predictive transformation diagrams: Application to a Ga–Te amorphous alloy

Accuracy in the experimental calorimetric study of the crystallization kinetics and predictive transformation diagrams: Application to a Ga–Te amorphous alloy

Thermal Analysis

Amorphous metal nanocrystallization changes due to mechanical alloying

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